4l80e stuck in 3rd gear

Aug 10, 2020 · Well, it is a good deal. :roflmao: What was the outcome with the truck? Dec 21, 2016 · 1996 GMC K1500 6.5 turbo, transmission problem (4L80E) 3rd Gear and Reverse only. First time I noticed any problem I selected 1st gear whilst travelling across a hay field and it felt like transmission was binding up (like transmission brake was on). Selected D and truck felt OK till I drove onto the road and realised no shifting, stuck in 3rd ... I was driving the vehicle on the highway at about 65 MPH, when suddenly the transmission shifted from 4th to 3rd gear and would not go back into overdrive. After having stopped but not shutting off the engine, I continued on my way home, which was only 7 miles away, the transmission shifted only to 2nd gear and it is now stuck in 2nd gear only.That is how the transmission was designed to work, but when it is time to perform the maintenance make sure you do something about it. That'll help your 4L80E from having problems prematurely. No 3rd or 4th gear - This can be caused by many things. Here's a whole writeup on it. 4L80E Problems: No 3rd or 4th gear2012. 3. 13. · Illinois. Mar 13, 2012. #1. I have a 1993 chevy c3500 with the 6.5 and 4l80e . When we got the truck the guy told us it would kick out of overdrive. Once we got the engine in it it wouldn't shift unless you got around 3000-3500. Feb 28, 2007 · When this condition is present (no 3-4 shift after 4-3 WOT), do you get these shifts: - 3-2 kickdown (WOT) - 3-2 part throttle (PT) - 2-1 PT. - 1-2 PT. - 2-3 PT. If you get thes other shifts, then possibly the 3-4 shift valve may be sticking. Attached page is from the 4L80E Technician's Guide. • Inhibiting fourth gear in hot mode. CODE 69- TCC Stuck ON Parameters: No codes 21,22,28,74 are set. TCC slip indicates TCC is ON. TCC is commanded OFF. TP sensor indicates load greater than 25%. D-4 or D-3 range is indicated. PCM commands unit to second or third gears. The above conditions are present for more than two seconds.. "/>.Aug 10, 2020 · Well, it is a good deal. :roflmao: What was the outcome with the truck? 1995 Chevrolet 4 x 4 T. What is wrong with my transmission? In my shift and third I have to rev it up to 4000 RPM and it will only hold third for about 10 seconds. It will shift 1st to 2nd and then to shift and third I have to rev it up to 4000 RPM and it will only hold third for about 10 seconds. answers.Jan 22, 2012 · 3rd and 4th gear are present: we know the direct clutch is capable of working and is good. 3rd and 4th gear not present: there may be an issue with a checkball leaking or missing in the valve body, and/or something with the seal rings and/or direct clutch drum fault. Engine braking in manual 1st: we know the Low/Reverse Band is capable of holding. P-R-N-D work, upshifts mostly work, no downshift into 1 from 2 or to 2 from 3, "stuck" in a certain gear: Pull out the wallet and grease pan. You have to replace the solenoids that control the 1-2 and 2-3 shifts, the "A" and "B" solenoids respectively (the 3-OD shift is not controlled via a solenoid…more on that later).The 4L80E direct drum uses a sprag race that is 0.045 to 0.050 wider than the TH400 sprag race. If you acquire a 4L80E direct drum be sure to have the correct race, too. ... For a heavy duty application: 3rd gear shift use 0.150" (#25 bit, 0.1495") drill and leave the 1-2 check ball out. Caution: A 34 element sprag needs to used if the 1-2 ...When your 4l60e starts to act up and not shift correctly, one very likely culprit is the shift solenoids. There are 2 shift solenoids in a 4l60e (1-2 and 2-3), and both control up and downshifts with fluid passing through them when commanded to do so by the computer. However, when they go bad, you will notice very quickly.When scanning for codes and data, it is in most cases, necessary to identify the model year, division, engine size and body style which are identified by the 10th, 3rd, 8th and 4th for Cars or 5th for Trucks, digits of the Vehicle Identification Number (VIN) respectively, which is the Model Year, Car/Truck Division, Engine and Body identification respectively.2012. 3. 13. · Illinois. Mar 13, 2012. #1. I have a 1993 chevy c3500 with the 6.5 and 4l80e . When we got the truck the guy told us it would kick out of overdrive. Once we got the engine in it it wouldn't shift unless you got around 3000-3500. TIP 1: Before removing the transmission oil pan, read the section: Before You Remove The Trans. Oil Pan. This section is a must read to avoid any complications you might have in finishing the job. TIP 2: Shift solenoid A refers to shift solenoid 1-2. shift solenoid B refers to the shift solenoid 2-3. TIP 3: Removing the shift solenoids should ...• 4L80E applications fail to shift, or will drop into second gear intemittently. The customer may complain that the "vehicle is going to neutral at higher road speeds". • 4L60E fail to shift and may drop or stay in 3rd gear when the shift lever is in the OD position. after some hard offroading my 4l80e tranny has decided to stop shifting into second gear. my fluid is clean, no burn smell. i drove home from the desert and the tranny was shifting perfectly fine ( this was on a saturday). perfect shifts, just like it always had.Mar 23, 2017 · The throttle angle is greater than 10 percent. The transmission fluid temperature (TFT) is greater than 20°C (68°F) and less than 130°C (266°F). The engine torque must be 108–542 Y (80–400 lb ft). Conditions for Setting the DTC. The commanded gear equals 3rd and the ratio is 2nd for greater than 2.25 seconds. Discussion Starter · #1 · Jan 29, 2012. 04 Silverado 4x4 transfer case stuck on neutral. Just replaced the transfer case. The original one locked up while driving. I got a new one and put it in but it is stuck in neutral. I can hear the encoder motor switching between 2h and all when I push the different buttons but it is still in neutral.9. No 2nd or 4th gear. 2-4 band is slipping. Servo seals may be damaged (can be fixed without removing trans. Otherwise, 2-4 band is worn out. R&R. 10. Trans shifts into gear harshly, 3rd gear starts, manual 2nd available but no 1st, no 4th, and no TCC lockup: No power to transmission, or trans is in limp-home mode.Jul 22, 2008 · after some hard offroading my 4l80e tranny has decided to stop shifting into second gear. my fluid is clean, no burn smell. i drove home from the desert and the tranny was shifting perfectly fine ( this was on a saturday). perfect shifts, just like it always had. Jul 05, 2020 · 8. 4L80E - Gen 3 ? Inconsistent in Executing 1>2 Shift. The issue Im trying to solve is inconsistent 1>2 shift execution under WOT w/ gear selector in Drive (3rd). 1st gear holds fine, 2nd gear holds fine, all gears shift fine and feel good under normal cruising or part throttle, there are no DTCs, etc. From looking at my data, it appears to me ... You will come into issues at some point. Hard shifts could come up and that is not good. You may experience shudders. The gears may become stuck. There might be jerking. If the transmission fluid leaks, that needs to be fixed quickly. Delayed shifts will cause acceleration issues. The transmission might slip. Like (43) Overview & Photos 96 4.52004trans6_4L80E.doc Shift Solenoid A Performance NORMAL PATTERN 1-2-3-4 Shift Pattern 2-2-3-3 P0751 This DTC detects a Stuck Shift Solenoid by using incorrect Gear Ratios with the Commanded Gear. Commanded Gear = 1 and Ratio = 2nd > 2.0 sec AND Commanded Gear = 4/ with TCC Locked Ratio = 3rd > 3.75 seconds STUCK Shift Pattern = 2-2-3-3 That is how the transmission was designed to work, but when it is time to perform the maintenance make sure you do something about it. That'll help your 4L80E from having problems prematurely. No 3rd or 4th gear - This can be caused by many things. Here's a whole writeup on it. 4L80E Problems: No 3rd or 4th gearMay 19, 2018 · Your 4L80E has a set of clutches that work with both 3'rd and 4'th gear. It's referred to as the 3-4 clutch pack. A bad 3-4 clutch pack can certainly cause the 3'rd and 4'th gear to stop working. In fact, once the transmission "shifts" into third, it'll feel like you lost the whole thing. You can shift into second to get ....Under edit menu and calibration details it needs to say 4l80e for trans. I'm having almost an identical issue on an 06 TBSS with around 150k miles on her. No actual codes trip, just the P1815 gear code. It came to me after sitting at another shop that did a stroker and RPM trans. They R&R'd the trans 3 times.My transmission in my 1993 motorhome with a Chevy 4L80E (only 7000 miles on motorhome) will not shift into 3rd gear. The RPMs will jump up but the ****** will not shift. After that is set code 81 and will go into limp mode. I have checked the wiring, the soleniods will click when I ground them. I am not sure what to check next.4L80E repeated solenoid B code 86 or 87, no 3rd or 4th gear, new springs for the 1-2 and 2-3 shift valves (2 springs) $ 6. Pulses means in this case Movements. # 4L80E -3/MA $3299. lq4, 2500hd, 4l80ethese are all words that don't belong.• 4L80E applications fail to shift, or will drop into second gear intemittently. The customer may complain that the "vehicle is going to neutral at higher road speeds". • 4L60E fail to shift and may drop or stay in 3rd gear when the shift lever is in the OD position. Nov 30, 2008 · The reason the transmission was revving up going into OD was that 4th gear was slipping that much. After the transmission slipped a lot, it would go into limp mode, or stuck in 2nd gear as it's better known. I spoke to four different transmission shops, gathering advice. I had the 4th shop run a scan on it during a road test. The Hydra-matic 4L80E is a 4-speed automatic transmission which uses electronic control for smooth shifting. It offers a fourth gear overdrive to increase fuel efficiency. A torque con- verter clutch automatically engages at cruising speeds to improve fuel efficiency.The transmission could have an issue with the shift solenoids. Check the wiring harness to the transmission case and make sure that it is plugged in. 3rd gear is the only forward gear in a 4L60E transmission that does not require electrical power. It is common for the electrical harness in the transmission to short out. ww2 items worth money Jan 16, 2018 · I have a bit of an issue, I drive a 97 gmc 3500 dually with a 6.5 turbo diesel 4l80e automatic transmission , for the past couple of days I've noticed that when the transmission gets a bit hot ( maybe after 45 min after turning on the truck in the morning), it doesnt want to shift from 2nd gear. This morning, as soon as I drove to work the ... Jul 21, 2022 · Why is my transmission stuck in 3rd gear? The first is that a solenoid in your transmission, which is the way that your car’s computer mechanically engages gear changes, has become stuck. The other cause is that your car may have activated something called “limp mode” due to faulty sensors. Where can you find a 4L80E transmission? Cause: If you find your 4L80E has cracked around the bell housing or broken off completely first check for corrosion build up between the transmission bell housing and engine housing, its very common to have enough festering corrosion build up that the transmission "hydraulically" pushes off the engine and breaks the housing around the bolt area...3. Pan gasket leaking. 4. Leaking oil transfer hole cup plug. Insufficient Lube at Low Line or Under Heavy Load 1. Converter limit valve dirty. 2. Retainer pin broken. Loss of Drive 1. Faulty torque converter. 2. Seized or broken pump. 3. Case extension seal missing, damaged or displaced. 4. Orifice plate missing or leaking around edge. 5.Aug 10, 2020 · Well, it is a good deal. :roflmao: What was the outcome with the truck? TROUBLESHOOTING THE 4L80E AUTOMATIC TRANSMISSION INTRODUCTION The Hydra-matic 4L80E is a 4-speed automatic transmission which uses electronic control for smooth shifting. It offers a fourth gear overdrive to increase fuel efficiency. A torque con-verter clutch automatically engages at cruising speeds to improve fuel efficiency. Unlike Step 4. Turning the Key Off After putting your foot on the accelerator pedal for about 10-12 seconds, you need to go ahead and return to the key. However, do not let go of the pedal. Note that you have to do all this "resetting" by keeping your foot on the pedal. Remember before you had the keys turned to 2?9. No 2nd or 4th gear. 2-4 band is slipping. Servo seals may be damaged (can be fixed without removing trans. Otherwise, 2-4 band is worn out. R&R. 10. Trans shifts into gear harshly, 3rd gear starts, manual 2nd available but no 1st, no 4th, and no TCC lockup: No power to transmission, or trans is in limp-home mode.When this condition is present (no 3-4 shift after 4-3 WOT), do you get these shifts: - 3-2 kickdown (WOT) - 3-2 part throttle (PT) - 2-1 PT. - 1-2 PT. - 2-3 PT. If you get thes other shifts, then possibly the 3-4 shift valve may be sticking. Attached page is from the 4L80E Technician's Guide. Unfortunately during the rebuild days I did the following (all of which I wish now that I did not do) Had the 3 pump modifications done 1) Under "X" drill a 3/64 (.042 - .055) hole thru side of wall in direction of arrow 2) enlarge the seal drain back hole in the pump cover with a .250" drill 3) used the new boost valve & spring supplied I also ...Jul 21, 2022 · Why is my transmission stuck in 3rd gear? The first is that a solenoid in your transmission, which is the way that your car’s computer mechanically engages gear changes, has become stuck. The other cause is that your car may have activated something called “limp mode” due to faulty sensors. Where can you find a 4L80E transmission? I had that issue on my k3500 with a 4l80e. I replaced the shift solenoids and that fixed it. May 9, 2014 #9 E eeehabt TYF Newbie Joined Apr 2, 2014 Posts 29 Reaction score 0 aztec said: I have a 2004 Yukon with 140000 miles on it and the transmission would not go into 3rd gear. the RPMS go all the way to 4000 but it wont go into 3rd.TROUBLESHOOTING THE 4L80E AUTOMATIC TRANSMISSION INTRODUCTION The Hydra-matic 4L80E is a 4-speed automatic transmission which uses electronic control for smooth shifting. It offers a fourth gear overdrive to increase fuel efficiency. A torque con-verter clutch automatically engages at cruising speeds to improve fuel efficiency. Unlike The Detent Solenoid cannot stick open if power was never applied to it. Possible causes. Stuck 2-3 shift valve. Direct Clutch Piston seals hardened/worn. Center Support sealing rings worn &/or Worn Direct Drum. aerospace ground equipment reddit I was driving the vehicle on the highway at about 65 MPH, when suddenly the transmission shifted from 4th to 3rd gear and would not go back into overdrive. After having stopped but not shutting off the engine, I continued on my way home, which was only 7 miles away, the transmission shifted only to 2nd gear and it is now stuck in 2nd gear only.A stuck valve, trash in the fluid or an air pocket, usually causes this. Raise the rear wheels off the ground, place the transmission in overdrive position. Run the speedometer as high as 100 miles per hour, pop the throttle on and off and see if you can force a 3-4 shift.No 2nd or 4th gear: The 2-4 band is slipping, or servo seals are leaking. Servo seals can be replaced without pulling transmission, or the transmission must be removed for band replacement. No 1st or 4th gear, and transmission shifts from 2nd to 3rd by itself: The shift solenoid has failed, or there is a wiring problem between PCM and transmission.Set the dash shifter and transmission in the 3rd position. The transmission will be 2 clicks from park. Snap the cable back onto the shifter arm. Push the white button in to lock the cable in its adjusted position and slide the black retainer thing back over it. Start the truck up and check your gears. It should register correctly for all of them.Feb 28, 2007 · When this condition is present (no 3-4 shift after 4-3 WOT), do you get these shifts: - 3-2 kickdown (WOT) - 3-2 part throttle (PT) - 2-1 PT. - 1-2 PT. - 2-3 PT. If you get thes other shifts, then possibly the 3-4 shift valve may be sticking. Attached page is from the 4L80E Technician's Guide. P-R-N-D work, upshifts mostly work, no downshift into 1 from 2 or to 2 from 3, "stuck" in a certain gear: Pull out the wallet and grease pan. You have to replace the solenoids that control the 1-2 and 2-3 shifts, the "A" and "B" solenoids respectively (the 3-OD shift is not controlled via a solenoid…more on that later).Jan 11, 2007 · Subject: MIL On, Transmission Stuck in Second or Third Gear, IPC Inoperative, DTCs P0740,P0753,P0758,P0785,P0787,P0973,P0976,P1860,P2761,P2764 and/or P2769 Set (Verify and Repair Source of Voltage Loss #01-07-30-002E - (09/23/2005) Models: 2006 and Prior GM Passenger Cars and Light Duty Trucks 2005-2006 HUMMER H2 2006 HUMMER H3 2003 Sierra-My truck is doing the same thing- speedo reads zero and won't shift out of first. I cleaned the MAS, replaced shift sensor, made sure trans fluid was full, disconnected and reconnected the battery, and now I am thinking of replacing the stepper motors for the speedo but don't think that covers the shifting issue.4l80e swap stuck in 2nd. I've fitted a 4l80e to my Patrol with a LS1 turbo and have only got 2nd and reverse. I made the wiring changes as outlined in one of the threads on the forum and have a custom OS that incooperates a 2002 Silverado 6.0l which is 4l80e equiped, I did a trans segment swap. It shows the correct gear in the scan tool from ...2004trans6_4L80E.doc Shift Solenoid A Performance NORMAL PATTERN 1-2-3-4 Shift Pattern 2-2-3-3 P0751 This DTC detects a Stuck Shift Solenoid by using incorrect Gear Ratios with the Commanded Gear. Commanded Gear = 1 and Ratio = 2nd > 2.0 sec AND Commanded Gear = 4/ with TCC Locked Ratio = 3rd > 3.75 seconds STUCK Shift Pattern = 2-2-3-3 1996 GMC K1500 6.5 turbo, transmission problem (4L80E) 3rd Gear and Reverse only. First time I noticed any problem I selected 1st gear whilst travelling across a hay field and it felt like transmissio ... The SES light is on and the van is stuck is 2nd gear only.Dec 21, 2016 · 1996 GMC K1500 6.5 turbo, transmission problem (4L80E) 3rd Gear and Reverse only. First time I noticed any problem I selected 1st gear whilst travelling across a hay field and it felt like transmission was binding up (like transmission brake was on). Selected D and truck felt OK till I drove onto the road and realised no shifting, stuck in 3rd ... Though the shell is supposed to be one piece, not only can it break off, but it can also strip out the splines. Hard Second Gear - The third most common symptom of a failing 4L60E transmission is the difficulty in shifting to the second gear. The second is so hard that it almost feels like a shift kit has been installed.Non-related transmission component system failure may cause this circuit fuse to fail. Fuses such as ERLS or SHIFT SOL fuse supply power to non-related transmission components (A/C clutch, EGR, EVAP, or ABS system) which may have caused fuse to fail. NOTE:Trouble codes will be recorded at various operating times.Joined Feb 4, 2008. 468 Posts. #6 · Jul 26, 2011. I have 104,000 miles on the 4L80E in my 98 K3500 but I bought it used with 94,600 miles on it so I don't know it's complete history. I had someone run my VIN through GM's inquiry system and it showed that the tranny valve body was R&R or replaced along with the PCM at 20,230 miles.A 4L80E defaults to 2nd gear when it has no solenoid function. It also defaults to max line pressure. A bad "A" solenoid will kill low gear and OD. A bad "B" solenoid will kill 3rd gear and OD. However a lack of 12V supply can happen anywhere from the battery-ignition switch-fuse block- harness- connector- internal harness.Nov 01, 2007 · 4L80E 2nd & 3rd gear only. I've got a 16,500lb motorhome with a '95 Chevrolet P32 chassis, 454 TBI and the 4L80E trans with 50K miles (purchased with 38K). The trans has two external coolers, one in the radiator and one in front of the radiator. At the present time it will only run in 2nd and 3rd gears, and the converter will not lock up. P0756 This DTC detects a Stuck Shift Solenoid by using incorrect Gear Ratios with the Commanded Gear. Commanded Gear = 1 Ratio = 4th > 2.5 sec AND Commanded Gear = 2 Ratio = 3rd > 2.7 sec STUCK Shift Pattern = 4-3-3-4Jul 21, 2022 · Why is my transmission stuck in 3rd gear? The first is that a solenoid in your transmission, which is the way that your car’s computer mechanically engages gear changes, has become stuck. The other cause is that your car may have activated something called “limp mode” due to faulty sensors. Where can you find a 4L80E transmission? 4L80E repeated solenoid B code 86 or 87, no 3rd or 4th gear, new springs for the 1-2 and 2-3 shift valves (2 springs) $ 6. Pulses means in this case Movements. # 4L80E -3/MA $3299. lq4, 2500hd, 4l80ethese are all words that don't belong.No 2nd or 4th gear: The 2-4 band is slipping, or servo seals are leaking. Servo seals can be replaced without pulling transmission, or the transmission must be removed for band replacement. No 1st or 4th gear, and transmission shifts from 2nd to 3rd by itself: The shift solenoid has failed, or there is a wiring problem between PCM and transmission.2004trans6_4L80E.doc Shift Solenoid A Performance NORMAL PATTERN 1-2-3-4 Shift Pattern 2-2-3-3 P0751 This DTC detects a Stuck Shift Solenoid by using incorrect Gear Ratios with the Commanded Gear. Commanded Gear = 1 and Ratio = 2nd > 2.0 sec AND Commanded Gear = 4/ with TCC Locked Ratio = 3rd > 3.75 seconds STUCK Shift Pattern = 2-2-3-3 Mar 12, 2011 · Crosley. the 4L80E came in column shift applications. The shift linkage threaded shaft is the same design with one long shaft and one short shaft. The long shaft usually had a MLPS = Manual Lever Position Sensor. There would have been a cable from column shifter to the transmission. You need to figure out the correct parts is all. I'm here searching for the answer/fix for my trans problem. The symptoms are as follows. Fire the rig up run down the road get one full cycle of shifts including o.d. with converter lock up. After about 30 seconds in o.d. truck drops to 3rd and remains there. For the remainder of that key cycle I have manual 2nd 3rd and reverse aka limp mode.I was driving the vehicle on the highway at about 65 MPH, when suddenly the transmission shifted from 4th to 3rd gear and would not go back into overdrive. After having stopped but not shutting off the engine, I continued on my way home, which was only 7 miles away, the transmission shifted only to 2nd gear and it is now stuck in 2nd gear only.The reason the transmission was revving up going into OD was that 4th gear was slipping that much. After the transmission slipped a lot, it would go into limp mode, or stuck in 2nd gear as it's better known. I spoke to four different transmission shops, gathering advice. I had the 4th shop run a scan on it during a road test.The Gm 4l80E transmission is found in Chevrolet and GMC pick ups, G vans and commercial chassis with GVW of 8600 or greater from 1991 and up thru 2006, Isuzu NPR and NQR trucks as well as GMC/Chevrolet W3500 and W4500 trucks with either the 5.7 liter gas engine or the 6.0 liter gas engines after model year 2000 trucks. this is a computer ... Jan 22, 2012 · 3rd and 4th gear are present: we know the direct clutch is capable of working and is good. 3rd and 4th gear not present: there may be an issue with a checkball leaking or missing in the valve body, and/or something with the seal rings and/or direct clutch drum fault. Engine braking in manual 1st: we know the Low/Reverse Band is capable of holding. Mar 23, 2017 · The throttle angle is greater than 10 percent. The transmission fluid temperature (TFT) is greater than 20°C (68°F) and less than 130°C (266°F). The engine torque must be 108–542 Y (80–400 lb ft). Conditions for Setting the DTC. The commanded gear equals 3rd and the ratio is 2nd for greater than 2.25 seconds. When this condition is present (no 3-4 shift after 4-3 WOT), do you get these shifts: - 3-2 kickdown (WOT) - 3-2 part throttle (PT) - 2-1 PT. - 1-2 PT. - 2-3 PT. If you get thes other shifts, then possibly the 3-4 shift valve may be sticking. Attached page is from the 4L80E Technician's Guide. May 16, 2021 · I was driving the vehicle on the highway at about 65 MPH, when suddenly the transmission shifted from 4th to 3rd gear and would not go back into overdrive. After having stopped but not shutting off the engine, I continued on my way home, which was only 7 miles away, the transmission shifted only to 2nd gear and it is now stuck in 2nd gear only. No shift past 2nd could be 3-4 clutch pack, but also torque converter, oil pump, valve body faults, Input housing faults including the 3-4 clutch, vss. Click to expand... The torque converter won't cause a trans to not shift past 2nd. It's not likely it's a VSS either. Frank.Did the tps, iac, egr solenoid, o2, coolant sensor, map, plugs and wires, all new grounding straps. Now it runs decent, still have to apply throttle to get it stared but after that drives fine. Now iv'e discovered that the transmission seems to be stuck in either 2nd or 3rd gear. Shifting through the gears dose nothing. Have reverse though.Code 68 can be a slipping 4th gear (OD) and / or lock up clutch. that is why I asked about the code being set in 3rd gear , which BTW may not happen in normal driving while in the "D postiton. The slip rate may still be within set parameters in the programing Turning the ignition off and then on does not clear codes. Is this what you are doing?Gm 4L80e transmission not shifting. Hello, I'm a mechanic in the marine corp. we've had an m1115 hmmwv in our shop for about 2 months now with transmission problems and haven't been able to figure it out. The transmission is a Gm 4L80e. It won't shift out of first and I've done everything from replacing the TPS to testing the TISS and TOSS.I had that issue on my k3500 with a 4l80e. I replaced the shift solenoids and that fixed it. May 9, 2014 #9 E eeehabt TYF Newbie Joined Apr 2, 2014 Posts 29 Reaction score 0 aztec said: I have a 2004 Yukon with 140000 miles on it and the transmission would not go into 3rd gear. the RPMS go all the way to 4000 but it wont go into 3rd.Jan 22, 2012 · 3rd and 4th gear are present: we know the direct clutch is capable of working and is good. 3rd and 4th gear not present: there may be an issue with a checkball leaking or missing in the valve body, and/or something with the seal rings and/or direct clutch drum fault. Engine braking in manual 1st: we know the Low/Reverse Band is capable of holding. The reason the transmission was revving up going into OD was that 4th gear was slipping that much. After the transmission slipped a lot, it would go into limp mode, or stuck in 2nd gear as it's better known. I spoke to four different transmission shops, gathering advice. I had the 4th shop run a scan on it during a road test.2012. 3. 13. · Illinois. Mar 13, 2012. #1. I have a 1993 chevy c3500 with the 6.5 and 4l80e . When we got the truck the guy told us it would kick out of overdrive. Once we got the engine in it it wouldn't shift unless you got around 3000-3500. TIP 1: Before removing the transmission oil pan, read the section: Before You Remove The Trans. Oil Pan. This section is a must read to avoid any complications you might have in finishing the job. TIP 2: Shift solenoid A refers to shift solenoid 1-2. shift solenoid B refers to the shift solenoid 2-3. TIP 3: Removing the shift solenoids should ...Non-related transmission component system failure may cause this circuit fuse to fail. Fuses such as ERLS or SHIFT SOL fuse supply power to non-related transmission components (A/C clutch, EGR, EVAP, or ABS system) which may have caused fuse to fail. NOTE:Trouble codes will be recorded at various operating times.• 4L80E applications fail to shift, or will drop into second gear intemittently. The customer may complain that the "vehicle is going to neutral at higher road speeds". • 4L60E fail to shift and may drop or stay in 3rd gear when the shift lever is in the OD position. No 3rd or 4th gear (can be driven in 2nd gear): 3-4 clutches are worn out. Transmission must be removed and rebuilt. No 2nd or 4th gear (can be driven in 3rd gear): Servo seals are damaged or 2-4 band is worn out. Transmission must be removed and rebuilt. No 1st or 4th gear (in Drive it shifts from 2nd to 3rd and locks the torque converter):95 4l60e not shifting past 2nd. 1,170. Asked by Jeremiah Sep 24, 2017 at 05:45 PM about the 1995 GMC Sierra 1500 K1500 SLE 4WD Extended Cab SB. Question type: Maintenance & Repair. I just bought a used trans from someone it had. 189xxx miles on it and it won't shift past 2nd in od. And when going down the road at about 40 and try.Then ran through the gear selector feeling it pop in to each gear(p-r, P-d,). Then the road test. I reversed put the selector into drive and the envoy had power going forward. Continued onto second gear and obviously the fluid was still being worked through the tranny because it took high rpms to get into 3rd at first.3 Early Signs Of A Bad 4L80E Transmission Burning Smell. Generally, the burning smell in your car indicates that you are driving the clutch, which means that you are partially keeping it engaged when driving. Transmission fluid leaks. Shifting gear problem. Final note. What causes a 4L80E to go into limp mode?Cars go in limp mode when the On-Board Diagnostic (OBD) system detects a critical problem. The main function of limp mode is to prevent further damage to the engine or transmission. Limp mode reduces engine output, limits the RPMs and speed, prevents the transmission from shifting gears. Limp mode allows you to reach up to 40 mph speeds. Take a few minutes to read this article, as you wait for ...Both the 4L60E and 4L60 have the same number of gear ratios as well as the same number of gears. Common 4l60e Transmission Problems Below is a partial list of some of the most common 4L60E transmission problems: Slipping, Slow or No Reverse Available Many owners find that the "lo-reverse" clutches are beat up or worn out.Oct 07, 2019 · The 4L80E featured a large 32 spline output shaft (even though much stronger) in its various 2wd and 4wd applications. 4L80E vs. TH400. The 4L80E featured an overdrive fourth gear which required an extra gearset as well as a longer (1-1/2″) case. The transmission uses electronics to control shift points. Pick-Up Trucks, Large Passenger and Cargo Vans, Campers, Trailers, RV's and Motor Homes - 4L80E in a 1997 Chevy van limp mode - Hi guys, I have a 1997 Chevy van with a newly rebuilt 4L80E gearbox. It works through all gears but gearshifts are very harsh, almost banging in the next gear. And, when been driven up to dual occupancy ipswich This video is for you to diagnose the problem with your 4L60 transmission when 3rd or 4th gear won't engage, we show the parts that typically are bad when yo...When your 4l60e starts to act up and not shift correctly, one very likely culprit is the shift solenoids. There are 2 shift solenoids in a 4l60e (1-2 and 2-3), and both control up and downshifts with fluid passing through them when commanded to do so by the computer. However, when they go bad, you will notice very quickly.2003 Sierra-My truck is doing the same thing- speedo reads zero and won't shift out of first. I cleaned the MAS, replaced shift sensor, made sure trans fluid was full, disconnected and reconnected the battery, and now I am thinking of replacing the stepper motors for the speedo but don't think that covers the shifting issue.Discussion Starter · #1 · Jan 29, 2012. 04 Silverado 4x4 transfer case stuck on neutral. Just replaced the transfer case. The original one locked up while driving. I got a new one and put it in but it is stuck in neutral. I can hear the encoder motor switching between 2h and all when I push the different buttons but it is still in neutral.When this condition is present (no 3-4 shift after 4-3 WOT), do you get these shifts: - 3-2 kickdown (WOT) - 3-2 part throttle (PT) - 2-1 PT. - 1-2 PT. - 2-3 PT. If you get thes other shifts, then possibly the 3-4 shift valve may be sticking. Attached page is from the 4L80E Technician's Guide. 2012. 3. 13. · Illinois. Mar 13, 2012. #1. I have a 1993 chevy c3500 with the 6.5 and 4l80e . When we got the truck the guy told us it would kick out of overdrive. Once we got the engine in it it wouldn't shift unless you got around 3000-3500. Join Date: Apr 2005. Location: North Jersey. Vehicle: 2002 WRX Sedan. Silver. Stuck in 3rd gear. driving home the shifter started to act up and feel reall stiff all of the sudden. next thing I know the car is stuck in 3rd gear. the H-Pattern is gone. Aug 10, 2020 · Well, it is a good deal. :roflmao: What was the outcome with the truck? 2003 Sierra-My truck is doing the same thing- speedo reads zero and won't shift out of first. I cleaned the MAS, replaced shift sensor, made sure trans fluid was full, disconnected and reconnected the battery, and now I am thinking of replacing the stepper motors for the speedo but don't think that covers the shifting issue.9. No 2nd or 4th gear. 2-4 band is slipping. Servo seals may be damaged (can be fixed without removing trans. Otherwise, 2-4 band is worn out. R&R. 10. Trans shifts into gear harshly, 3rd gear starts, manual 2nd available but no 1st, no 4th, and no TCC lockup: No power to transmission, or trans is in limp-home mode.• 4L80E applications fail to shift, or will drop into second gear intemittently. The customer may complain that the "vehicle is going to neutral at higher road speeds". • 4L60E fail to shift and may drop or stay in 3rd gear when the shift lever is in the OD position. 2004trans6_4L80E.doc Shift Solenoid A Performance NORMAL PATTERN 1-2-3-4 Shift Pattern 2-2-3-3 P0751 This DTC detects a Stuck Shift Solenoid by using incorrect Gear Ratios with the Commanded Gear. Commanded Gear = 1 and Ratio = 2nd > 2.0 sec AND Commanded Gear = 4/ with TCC Locked Ratio = 3rd > 3.75 seconds STUCK Shift Pattern = 2-2-3-3 Joined Feb 4, 2008. 468 Posts. #6 · Jul 26, 2011. I have 104,000 miles on the 4L80E in my 98 K3500 but I bought it used with 94,600 miles on it so I don't know it's complete history. I had someone run my VIN through GM's inquiry system and it showed that the tranny valve body was R&R or replaced along with the PCM at 20,230 miles.P-R-N-D work, upshifts mostly work, no downshift into 1 from 2 or to 2 from 3, "stuck" in a certain gear: Pull out the wallet and grease pan. You have to replace the solenoids that control the 1-2 and 2-3 shifts, the "A" and "B" solenoids respectively (the 3-OD shift is not controlled via a solenoid…more on that later).P-R-N-D work, upshifts mostly work, no downshift into 1 from 2 or to 2 from 3, "stuck" in a certain gear: Pull out the wallet and grease pan. You have to replace the solenoids that control the 1-2 and 2-3 shifts, the "A" and "B" solenoids respectively (the 3-OD shift is not controlled via a solenoid…more on that later).9. No 2nd or 4th gear. 2-4 band is slipping. Servo seals may be damaged (can be fixed without removing trans. Otherwise, 2-4 band is worn out. R&R. 10. Trans shifts into gear harshly, 3rd gear starts, manual 2nd available but no 1st, no 4th, and no TCC lockup: No power to transmission, or trans is in limp-home mode.Code 68 can be a slipping 4th gear (OD) and / or lock up clutch. that is why I asked about the code being set in 3rd gear , which BTW may not happen in normal driving while in the "D postiton. The slip rate may still be within set parameters in the programing Turning the ignition off and then on does not clear codes. Is this what you are doing?99 thru late 06 GMC and Chevrolet Silverado sierra you can suburban Tahoe etc. anything with a 4L 60 E transmission change your views and check your fuses sa...Pick-Up Trucks, Large Passenger and Cargo Vans, Campers, Trailers, RV's and Motor Homes - 4L80E in a 1997 Chevy van limp mode - Hi guys, I have a 1997 Chevy van with a newly rebuilt 4L80E gearbox. It works through all gears but gearshifts are very harsh, almost banging in the next gear. And, when been driven up toSOURCE: My 1993 chevy 3/4 ton If your transmission is part electronic, its the tps throttle positioning sensor. if its a diesel it will be on the passenger side of the injector pump, if it's gas same side. if it gets loose or goes bad you will have these problems. and your speedometer problem is likely the speed sensor located at the back end of the transmission. very easy to replace. the tps ... Mar 23, 2017 · The throttle angle is greater than 10 percent. The transmission fluid temperature (TFT) is greater than 20°C (68°F) and less than 130°C (266°F). The engine torque must be 108–542 Y (80–400 lb ft). Conditions for Setting the DTC. The commanded gear equals 3rd and the ratio is 2nd for greater than 2.25 seconds. Joined Nov 13, 2012. 568 Posts. Discussion Starter · #1 · Apr 10, 2017. Does anyone have a e40/T42 tune file for a stalled 4l80e? I would like to compare notes on force motor tables / TCC . Looked through HPT repository but only found one GTO file that said 4l80 but the gear ratios are off so I am suspect that the tune is not really from a 80e.SOURCE: My 1993 chevy 3/4 ton If your transmission is part electronic, its the tps throttle positioning sensor. if its a diesel it will be on the passenger side of the injector pump, if it's gas same side. if it gets loose or goes bad you will have these problems. and your speedometer problem is likely the speed sensor located at the back end of the transmission. very easy to replace. the tps ... • 4L80E applications fail to shift, or will drop into second gear intemittently. The customer may complain that the "vehicle is going to neutral at higher road speeds". • 4L60E fail to shift and may drop or stay in 3rd gear when the shift lever is in the OD position. Feb 28, 2007 · When this condition is present (no 3-4 shift after 4-3 WOT), do you get these shifts: - 3-2 kickdown (WOT) - 3-2 part throttle (PT) - 2-1 PT. - 1-2 PT. - 2-3 PT. If you get thes other shifts, then possibly the 3-4 shift valve may be sticking. Attached page is from the 4L80E Technician's Guide. P0756 This DTC detects a Stuck Shift Solenoid by using incorrect Gear Ratios with the Commanded Gear. Commanded Gear = 1 Ratio = 4th > 2.5 sec AND Commanded Gear = 2 Ratio = 3rd > 2.7 sec STUCK Shift Pattern = 4-3-3-423. 3rd gear starts, can manually shift through all gears. When car has been turned off for a bit, then back on it will run normally .: VSS dropoff w/ Hi-stall converter. The rpms are too high, but VSS is showing no movement. Happens after a tire burning take-off.Feb 28, 2007 · When this condition is present (no 3-4 shift after 4-3 WOT), do you get these shifts: - 3-2 kickdown (WOT) - 3-2 part throttle (PT) - 2-1 PT. - 1-2 PT. - 2-3 PT. If you get thes other shifts, then possibly the 3-4 shift valve may be sticking. Attached page is from the 4L80E Technician's Guide. Jul 21, 2022 · Why is my transmission stuck in 3rd gear? The first is that a solenoid in your transmission, which is the way that your car’s computer mechanically engages gear changes, has become stuck. The other cause is that your car may have activated something called “limp mode” due to faulty sensors. Where can you find a 4L80E transmission? on February 25, 2017. Right now this only occurs when engine is cold and only on the very first time of the day that it has to shift from 2nd to 3rd gear. It feels like it doesn't want to change gears and it has some difficulty getting up to speed from 30 to 40 mph. When it does, it kind of jerks into 3rd. Once it gets to 3rd gear, smooth and ...No 3rd or 4th gear (can be driven in 2nd gear): 3-4 clutches are worn out. Transmission must be removed and rebuilt. No 2nd or 4th gear (can be driven in 3rd gear): Servo seals are damaged or 2-4 band is worn out. Transmission must be removed and rebuilt. No 1st or 4th gear (in Drive it shifts from 2nd to 3rd and locks the torque converter):That is how the transmission was designed to work, but when it is time to perform the maintenance make sure you do something about it. That'll help your 4L80E from having problems prematurely. No 3rd or 4th gear - This can be caused by many things. Here's a whole writeup on it. 4L80E Problems: No 3rd or 4th gearMy transmission in my 1993 motorhome with a Chevy 4L80E (only 7000 miles on motorhome) will not shift into 3rd gear. The RPMs will jump up but the ****** will not shift. After that is set code 81 and will go into limp mode. I have checked the wiring, the soleniods will click when I ground them. I am not sure what to check next.Jul 05, 2020 · 8. 4L80E - Gen 3 ? Inconsistent in Executing 1>2 Shift. The issue Im trying to solve is inconsistent 1>2 shift execution under WOT w/ gear selector in Drive (3rd). 1st gear holds fine, 2nd gear holds fine, all gears shift fine and feel good under normal cruising or part throttle, there are no DTCs, etc. From looking at my data, it appears to me ... Discussion Starter · #1 · Jan 29, 2012. 04 Silverado 4x4 transfer case stuck on neutral. Just replaced the transfer case. The original one locked up while driving. I got a new one and put it in but it is stuck in neutral. I can hear the encoder motor switching between 2h and all when I push the different buttons but it is still in neutral.Feb 28, 2007 · When this condition is present (no 3-4 shift after 4-3 WOT), do you get these shifts: - 3-2 kickdown (WOT) - 3-2 part throttle (PT) - 2-1 PT. - 1-2 PT. - 2-3 PT. If you get thes other shifts, then possibly the 3-4 shift valve may be sticking. Attached page is from the 4L80E Technician's Guide. Jan 22, 2012 · 3rd and 4th gear are present: we know the direct clutch is capable of working and is good. 3rd and 4th gear not present: there may be an issue with a checkball leaking or missing in the valve body, and/or something with the seal rings and/or direct clutch drum fault. Engine braking in manual 1st: we know the Low/Reverse Band is capable of holding. No 2nd or 4th gear: The 2-4 band is slipping, or servo seals are leaking. Servo seals can be replaced without pulling transmission, or the transmission must be removed for band replacement. No 1st or 4th gear, and transmission shifts from 2nd to 3rd by itself: The shift solenoid has failed, or there is a wiring problem between PCM and transmission.Mar 23, 2017 · The throttle angle is greater than 10 percent. The transmission fluid temperature (TFT) is greater than 20°C (68°F) and less than 130°C (266°F). The engine torque must be 108–542 Y (80–400 lb ft). Conditions for Setting the DTC. The commanded gear equals 3rd and the ratio is 2nd for greater than 2.25 seconds. 4l80e stuck in 2nd gear - Answered by a verified GMC Mechanic. ... 1999 chevy Silverado 1500 5.3 - have transmission codes p0740 p1860 p0785 p0758 p0753 ,transmission stuck in 3rd ,instrument cluster inoperative . looked on all data no tsb for ignition switch issue i ...after some hard offroading my 4l80e tranny has decided to stop shifting into second gear. my fluid is clean, no burn smell. i drove home from the desert and the tranny was shifting perfectly fine ( this was on a saturday). perfect shifts, just like it always had.A bad shift solenoid can cause no 3'rd or 4'th gear in the 4L80E Shift Solenoids If you are experiencing no 3rd or 4th gear, it can often be caused by the shift solenoids. If they can't engage a gear properly, the transmission won't be going into that gear. In this case, it's probably going to be the 2-3 shift solenoid. 3/4 Clutch PackI don't think you would want to shift from 2nd-3rd with the TCC locked. The ECM unlocks during a shift, probably for a good reason. The input shaft of the 4L80E is said to be a touch weak and prone to snapping when you shift with the TCC locked. Never broken one myself so I can't verify that are that weak per say.Oct 28, 2015 · The Torque Converter Clutch is fed by 2nd gear fluid. - The earliest TCC can apply is 2nd gear. If HOT MODE displays YES, the TCC is engaged in 4th, 3rd gear, and 2nd gear, except for the following conditions: - TCC Brake Switch displays CLOSED. - Throttle angle must be at least approximately 2%. - A DTC is current. CTR. FDBK TCC should always ... Tech Tip: GM's A/T is Stuck in 2nd/3rd Gear. Some customers may comment on one or more of the following conditions: the MIL is on; the transmission is defaulted to second gear (4L80/85-E); the transmission is defaulted to third gear (4L60/65-E); the instrument cluster is inoperative.• 4L80E applications fail to shift, or will drop into second gear intemittently. The customer may complain that the "vehicle is going to neutral at higher road speeds". • 4L60E fail to shift and may drop or stay in 3rd gear when the shift lever is in the OD position. 4L80E 2nd & 3rd gear only. I've got a 16,500lb motorhome with a '95 Chevrolet P32 chassis, 454 TBI and the 4L80E trans with 50K miles (purchased with 38K). The trans has two external coolers, one in the radiator and one in front of the radiator. At the present time it will only run in 2nd and 3rd gears , and the converter will not lock up.2012. 3. 13. · Illinois. Mar 13, 2012. #1. I have a 1993 chevy c3500 with the 6.5 and 4l80e . When we got the truck the guy told us it would kick out of overdrive. Once we got the engine in it it wouldn't shift unless you got around 3000-3500. 95 4l60e not shifting past 2nd. 1,170. Asked by Jeremiah Sep 24, 2017 at 05:45 PM about the 1995 GMC Sierra 1500 K1500 SLE 4WD Extended Cab SB. Question type: Maintenance & Repair. I just bought a used trans from someone it had. 189xxx miles on it and it won't shift past 2nd in od. And when going down the road at about 40 and try.May 19, 2018 · Your 4L80E has a set of clutches that work with both 3'rd and 4'th gear. It's referred to as the 3-4 clutch pack. A bad 3-4 clutch pack can certainly cause the 3'rd and 4'th gear to stop working. In fact, once the transmission "shifts" into third, it'll feel like you lost the whole thing. You can shift into second to get ....2012. 3. 13. · Illinois. Mar 13, 2012. #1. I have a 1993 chevy c3500 with the 6.5 and 4l80e . When we got the truck the guy told us it would kick out of overdrive. Once we got the engine in it it wouldn't shift unless you got around 3000-3500. Step 4. Turning the Key Off After putting your foot on the accelerator pedal for about 10-12 seconds, you need to go ahead and return to the key. However, do not let go of the pedal. Note that you have to do all this "resetting" by keeping your foot on the pedal. Remember before you had the keys turned to 2?• 4L80E applications fail to shift, or will drop into second gear intemittently. The customer may complain that the "vehicle is going to neutral at higher road speeds". • 4L60E fail to shift and may drop or stay in 3rd gear when the shift lever is in the OD position. Feb 28, 2007 · When this condition is present (no 3-4 shift after 4-3 WOT), do you get these shifts: - 3-2 kickdown (WOT) - 3-2 part throttle (PT) - 2-1 PT. - 1-2 PT. - 2-3 PT. If you get thes other shifts, then possibly the 3-4 shift valve may be sticking. Attached page is from the 4L80E Technician's Guide. Oct 07, 2019 · The 4L80E featured a large 32 spline output shaft (even though much stronger) in its various 2wd and 4wd applications. 4L80E vs. TH400. The 4L80E featured an overdrive fourth gear which required an extra gearset as well as a longer (1-1/2″) case. The transmission uses electronics to control shift points. 2004trans6_4L80E.doc Shift Solenoid A Performance NORMAL PATTERN 1-2-3-4 Shift Pattern 2-2-3-3 P0751 This DTC detects a Stuck Shift Solenoid by using incorrect Gear Ratios with the Commanded Gear. Commanded Gear = 1 and Ratio = 2nd > 2.0 sec AND Commanded Gear = 4/ with TCC Locked Ratio = 3rd > 3.75 seconds STUCK Shift Pattern = 2-2-3-3 The Gm 4l80E transmission is found in Chevrolet and GMC pick ups, G vans and commercial chassis with GVW of 8600 or greater from 1991 and up thru 2006, Isuzu NPR and NQR trucks as well as GMC/Chevrolet W3500 and W4500 trucks with either the 5.7 liter gas engine or the 6.0 liter gas engines after model year 2000 trucks. this is a computer ... 2004trans6_4L80E.doc Shift Solenoid A Performance NORMAL PATTERN 1-2-3-4 Shift Pattern 2-2-3-3 P0751 This DTC detects a Stuck Shift Solenoid by using incorrect Gear Ratios with the Commanded Gear. Commanded Gear = 1 and Ratio = 2nd > 2.0 sec AND Commanded Gear = 4/ with TCC Locked Ratio = 3rd > 3.75 seconds STUCK Shift Pattern = 2-2-3-3 The transmission could have an issue with the shift solenoids. Check the wiring harness to the transmission case and make sure that it is plugged in. 3rd gear is the only forward gear in a 4L60E transmission that does not require electrical power. It is common for the electrical harness in the transmission to short out.May 19, 2018 · Your 4L80E has a set of clutches that work with both 3'rd and 4'th gear. It's referred to as the 3-4 clutch pack. A bad 3-4 clutch pack can certainly cause the 3'rd and 4'th gear to stop working. In fact, once the transmission "shifts" into third, it'll feel like you lost the whole thing. You can shift into second to get ....vehicle stuck in limp-home mode: if the tcm determines there's a problem with a shift solenoid, it may put the vehicle in "limp-home mode." in this state, the transmission will be forced into second or third gear to limit your speed, and one or more warning lights will appear on the dash get it diagnosed by a professional find a shop in your areaNon-related transmission component system failure may cause this circuit fuse to fail. Fuses such as ERLS or SHIFT SOL fuse supply power to non-related transmission components (A/C clutch, EGR, EVAP, or ABS system) which may have caused fuse to fail. NOTE:Trouble codes will be recorded at various operating times.Use the flexplate tool to work around each one and lock the flexplate bolts in place. Your engine is now mated to the 4L80E, mechanically at least. Now you need to connect your rear driveshaft and then tighten up the trans cross member and the transmission mounts that is resting on. You need to attach the trans lines on the passenger side.Jul 22, 2008 · after some hard offroading my 4l80e tranny has decided to stop shifting into second gear. my fluid is clean, no burn smell. i drove home from the desert and the tranny was shifting perfectly fine ( this was on a saturday). perfect shifts, just like it always had. - that the 4L80E 2-3 shift solenoid sequence for 1st, 2nd, 3rd, 4th is Off, Off, ON, ON (which is different than the 4L60E sequence of ON, ON, Off, Off. - that the 4L60E TCC PWM signal will spike high at various times while the 4L60E TCC signal is off. Attached Thumbnails March 8th, 2010 #8 kkustomz Junior Member Join Date Feb 2010 Posts 11Though the shell is supposed to be one piece, not only can it break off, but it can also strip out the splines. Hard Second Gear - The third most common symptom of a failing 4L60E transmission is the difficulty in shifting to the second gear. The second is so hard that it almost feels like a shift kit has been installed.Jul 21, 2022 · Why is my transmission stuck in 3rd gear? The first is that a solenoid in your transmission, which is the way that your car’s computer mechanically engages gear changes, has become stuck. The other cause is that your car may have activated something called “limp mode” due to faulty sensors. Where can you find a 4L80E transmission? The Hydra-matic 4L80E is a 4-speed automatic transmission which uses electronic control for smooth shifting. It offers a fourth gear overdrive to increase fuel efficiency. A torque con- verter clutch automatically engages at cruising speeds to improve fuel efficiency.The Gm 4l80E transmission is found in Chevrolet and GMC pick ups, G vans and commercial chassis with GVW of 8600 or greater from 1991 and up thru 2006, Isuzu NPR and NQR trucks as well as GMC/Chevrolet W3500 and W4500 trucks with either the 5.7 liter gas engine or the 6.0 liter gas engines after model year 2000 trucks. this is a computer ... 2004trans6_4L80E.doc Shift Solenoid A Performance NORMAL PATTERN 1-2-3-4 Shift Pattern 2-2-3-3 P0751 This DTC detects a Stuck Shift Solenoid by using incorrect Gear Ratios with the Commanded Gear. Commanded Gear = 1 and Ratio = 2nd > 2.0 sec AND Commanded Gear = 4/ with TCC Locked Ratio = 3rd > 3.75 seconds STUCK Shift Pattern = 2-2-3-3 I'm here searching for the answer/fix for my trans problem. The symptoms are as follows. Fire the rig up run down the road get one full cycle of shifts including o.d. with converter lock up. After about 30 seconds in o.d. truck drops to 3rd and remains there. For the remainder of that key cycle I have manual 2nd 3rd and reverse aka limp mode. amazon duvet covers I had that issue on my k3500 with a 4l80e. I replaced the shift solenoids and that fixed it. May 9, 2014 #9 E eeehabt TYF Newbie Joined Apr 2, 2014 Posts 29 Reaction score 0 aztec said: I have a 2004 Yukon with 140000 miles on it and the transmission would not go into 3rd gear. the RPMS go all the way to 4000 but it wont go into 3rd.This will cause the transmission to stay in 2nd gear when 3rd gear is commanded and return to 1st gear when 4th gear is commanded. • A 2-3 shift valve (368) or 2-3 shuttle valve (369) that is stuck, restricted and/or hung-up in its bore. • This condition may also be an indication of a damaged 2-4 band or 3-4 clutches.Feb 27, 2007 · They have a problem with the torque converter draining while sitting, and when you start it, the computer senses a problem, trips the check engine light and puts the trans mission into "limp in" mode. Giving you only 3rd gear. If this is not the case with your truck, for some reason the computer has sensed a problem with the transmission and ... Gear ratio must indicate 2nd, 3rd or 4th gear. TFP valve position switch indicates D4. Fluid temperature must be 0-266°F (-18-130°C). TCC slip speed does not exceed torque limits. Delivered torque is 32-150 ft. lbs. (43-202 N.m). Engine is not in fuel shut off mode. TCC solenoid valve is commanded on at maximum duty cycle. S sparkydm Registered23. 3rd gear starts, can manually shift through all gears. When car has been turned off for a bit, then back on it will run normally .: VSS dropoff w/ Hi-stall converter. The rpms are too high, but VSS is showing no movement. Happens after a tire burning take-off.Dec 21, 2016 · 1996 GMC K1500 6.5 turbo, transmission problem (4L80E) 3rd Gear and Reverse only. First time I noticed any problem I selected 1st gear whilst travelling across a hay field and it felt like transmission was binding up (like transmission brake was on). Selected D and truck felt OK till I drove onto the road and realised no shifting, stuck in 3rd ... A 4L80E defaults to 2nd gear when it has no solenoid function. It also defaults to max line pressure. A bad "A" solenoid will kill low gear and OD. A bad "B" solenoid will kill 3rd gear and OD. However a lack of 12V supply can happen anywhere from the battery-ignition switch-fuse block- harness- connector- internal harness.4L80E Rebuild Procedures Pump Step 1: Remove the o-ring from the outside diameter of the pump. Step 2: Remove the seal rings and thrust washer from the rear of the pump. Step 3: Remove the pump ...Locate the diagnostic port under the dashboard (driver's side) and plug in your scanner. Turn on the ignition and your scanner. Select Chevy from the main menu, then select your model. Select Control Units, then select Automatic Transmission. Select Read Fault Codes All codes that show as CURRENT should be fixed.When scanning for codes and data, it is in most cases, necessary to identify the model year, division, engine size and body style which are identified by the 10th, 3rd, 8th and 4th for Cars or 5th for Trucks, digits of the Vehicle Identification Number (VIN) respectively, which is the Model Year, Car/Truck Division, Engine and Body identification respectively.A stuck valve, trash in the fluid or an air pocket, usually causes this. Raise the rear wheels off the ground, place the transmission in overdrive position. Run the speedometer as high as 100 miles per hour, pop the throttle on and off and see if you can force a 3-4 shift.May 16, 2021 · I was driving the vehicle on the highway at about 65 MPH, when suddenly the transmission shifted from 4th to 3rd gear and would not go back into overdrive. After having stopped but not shutting off the engine, I continued on my way home, which was only 7 miles away, the transmission shifted only to 2nd gear and it is now stuck in 2nd gear only. Jan 16, 2018 · I have a bit of an issue, I drive a 97 gmc 3500 dually with a 6.5 turbo diesel 4l80e automatic transmission , for the past couple of days I've noticed that when the transmission gets a bit hot ( maybe after 45 min after turning on the truck in the morning), it doesnt want to shift from 2nd gear. This morning, as soon as I drove to work the ... Jul 21, 2022 · Why is my transmission stuck in 3rd gear? The first is that a solenoid in your transmission, which is the way that your car’s computer mechanically engages gear changes, has become stuck. The other cause is that your car may have activated something called “limp mode” due to faulty sensors. Where can you find a 4L80E transmission? Cause: If you find your 4L80E has cracked around the bell housing or broken off completely first check for corrosion build up between the transmission bell housing and engine housing, its very common to have enough festering corrosion build up that the transmission "hydraulically" pushes off the engine and breaks the housing around the bolt area...Unfortunately during the rebuild days I did the following (all of which I wish now that I did not do) Had the 3 pump modifications done 1) Under "X" drill a 3/64 (.042 - .055) hole thru side of wall in direction of arrow 2) enlarge the seal drain back hole in the pump cover with a .250" drill 3) used the new boost valve & spring supplied I also ...Lifetime Gold Member. Aug 5, 2011. 1,064. Norfolk, UK. The 4L80E in my camaro seems to work pretty well now - with the exception of it starts off in second gear when the lever is any position other than 1. Other than that it seems to shift fine, doesn't make any horrible noises or anything. The shift solenoids are working as they should. where do most tornadoes occur When this condition is present (no 3-4 shift after 4-3 WOT), do you get these shifts: - 3-2 kickdown (WOT) - 3-2 part throttle (PT) - 2-1 PT. - 1-2 PT. - 2-3 PT. If you get thes other shifts, then possibly the 3-4 shift valve may be sticking. Attached page is from the 4L80E Technician's Guide. • 4L80E applications fail to shift, or will drop into second gear intemittently. The customer may complain that the "vehicle is going to neutral at higher road speeds". • 4L60E fail to shift and may drop or stay in 3rd gear when the shift lever is in the OD position. #2 · Apr 2, 2010 Kieth if you could check with the sticky. there is a checklist to fill out. filling it out can help out alot. By the way Take off the passthrough connector and Verify voltage from pin E. It should be 12 volts to chassis ground. Verify to transmission ground as well. My bet it could be electrical. GBThe Gm 4l80E transmission is found in Chevrolet and GMC pick ups, G vans and commercial chassis with GVW of 8600 or greater from 1991 and up thru 2006, Isuzu NPR and NQR trucks as well as GMC/Chevrolet W3500 and W4500 trucks with either the 5.7 liter gas engine or the 6.0 liter gas engines after model year 2000 trucks. this is a computer ... When scanning for codes and data, it is in most cases, necessary to identify the model year, division, engine size and body style which are identified by the 10th, 3rd, 8th and 4th for Cars or 5th for Trucks, digits of the Vehicle Identification Number (VIN) respectively, which is the Model Year, Car/Truck Division, Engine and Body identification respectively.The Gm 4l80E transmission is found in Chevrolet and GMC pick ups, G vans and commercial chassis with GVW of 8600 or greater from 1991 and up thru 2006, Isuzu NPR and NQR trucks as well as GMC/Chevrolet W3500 and W4500 trucks with either the 5.7 liter gas engine or the 6.0 liter gas engines after model year 2000 trucks. this is a computer ...P-R-N-D work, upshifts mostly work, no downshift into 1 from 2 or to 2 from 3, "stuck" in a certain gear: Pull out the wallet and grease pan. You have to replace the solenoids that control the 1-2 and 2-3 shifts, the "A" and "B" solenoids respectively (the 3-OD shift is not controlled via a solenoid…more on that later).My transmission in my 1993 motorhome with a Chevy 4L80E (only 7000 miles on motorhome) will not shift into 3rd gear. The RPMs will jump up but the ****** will not shift. After that is set code 81 and will go into limp mode. I have checked the wiring, the soleniods will click when I ground them. I am not sure what to check next.after some hard offroading my 4l80e tranny has decided to stop shifting into second gear. my fluid is clean, no burn smell. i drove home from the desert and the tranny was shifting perfectly fine ( this was on a saturday). perfect shifts, just like it always had.4l80e stuck in 2nd gear - Answered by a verified GMC Mechanic. ... 1999 chevy Silverado 1500 5.3 - have transmission codes p0740 p1860 p0785 p0758 p0753 ,transmission stuck in 3rd ,instrument cluster inoperative . looked on all data no tsb for ignition switch issue i ...Under edit menu and calibration details it needs to say 4l80e for trans. I'm having almost an identical issue on an 06 TBSS with around 150k miles on her. No actual codes trip, just the P1815 gear code. It came to me after sitting at another shop that did a stroker and RPM trans. They R&R'd the trans 3 times.Just to make sure, here are the symptoms: 1. usually starts in 2nd and shifts fine into 3rd. 2. sometimes starts in 3rd. 2. downshifts from 3rd to 2nd find but not from 2nd to 1st under WOT. 3. can manually be shifted from 1st to 2nd to 3rd. 4. can be manually downshifted through all gears.Step 4. Turning the Key Off After putting your foot on the accelerator pedal for about 10-12 seconds, you need to go ahead and return to the key. However, do not let go of the pedal. Note that you have to do all this "resetting" by keeping your foot on the pedal. Remember before you had the keys turned to 2?Feb 27, 2007 · They have a problem with the torque converter draining while sitting, and when you start it, the computer senses a problem, trips the check engine light and puts the trans mission into "limp in" mode. Giving you only 3rd gear. If this is not the case with your truck, for some reason the computer has sensed a problem with the transmission and ... 4l60e no 2nd gear. daronlayne. 01-18-2010, 01:41 PM. Transmission is a 4l60e. It shifts from 1st to 3rd after you get up to about 20-25 mph and let off the gas slightly. All other gears are fine. I have 1st, 3rd, 4th and reverse. I changed the fluid and filter, but no change. Fluid was not burnt smelling.The transmission could have an issue with the shift solenoids. Check the wiring harness to the transmission case and make sure that it is plugged in. 3rd gear is the only forward gear in a 4L60E transmission that does not require electrical power. It is common for the electrical harness in the transmission to short out.Cause: If you find your 4L80E has cracked around the bell housing or broken off completely first check for corrosion build up between the transmission bell housing and engine housing, its very common to have enough festering corrosion build up that the transmission "hydraulically" pushes off the engine and breaks the housing around the bolt area...The General Motors 6L80E and 6L90E 6-speed transmissions were introduced in the late 2005 General Motors truck line as a successor to the 4L60E and 4L80E. It has a flare going into 3rd gear. 4l60e stuck in limp mode with no codes. The gearing basically makes it very much like a stock 3 speed with an extra low gear added.Jan 22, 2012 · 3rd and 4th gear are present: we know the direct clutch is capable of working and is good. 3rd and 4th gear not present: there may be an issue with a checkball leaking or missing in the valve body, and/or something with the seal rings and/or direct clutch drum fault. Engine braking in manual 1st: we know the Low/Reverse Band is capable of holding. Both the 4L60E and 4L60 have the same number of gear ratios as well as the same number of gears. Common 4l60e Transmission Problems Below is a partial list of some of the most common 4L60E transmission problems: Slipping, Slow or No Reverse Available Many owners find that the "lo-reverse" clutches are beat up or worn out.4L80E repeated solenoid B code 86 or 87, no 3rd or 4th gear, new springs for the 1-2 and 2-3 shift valves. OBDI/OBDII PCM Tuning/Programming. ... The transmission was stuck in 3rd gear when I was in Drive, so when I would start out, it would accelerate slowly until up to speed. It requires 8. 4l60e sprag failure symptoms 4l60e sprag failure ...This video is for you to diagnose the problem with your 4L60 transmission when 3rd or 4th gear won't engage, we show the parts that typically are bad when yo... That is how the transmission was designed to work, but when it is time to perform the maintenance make sure you do something about it. That'll help your 4L80E from having problems prematurely. No 3rd or 4th gear - This can be caused by many things. Here's a whole writeup on it. 4L80E Problems: No 3rd or 4th gearThe Gm 4l80E transmission is found in Chevrolet and GMC pick ups, G vans and commercial chassis with GVW of 8600 or greater from 1991 and up thru 2006, Isuzu NPR and NQR trucks as well as GMC/Chevrolet W3500 and W4500 trucks with either the 5.7 liter gas engine or the 6.0 liter gas engines after model year 2000 trucks. this is a computer ...Aug 10, 2020 · Well, it is a good deal. :roflmao: What was the outcome with the truck? 2012. 3. 13. · Illinois. Mar 13, 2012. #1. I have a 1993 chevy c3500 with the 6.5 and 4l80e . When we got the truck the guy told us it would kick out of overdrive. Once we got the engine in it it wouldn't shift unless you got around 3000-3500. Just to make sure, here are the symptoms: 1. usually starts in 2nd and shifts fine into 3rd. 2. sometimes starts in 3rd. 2. downshifts from 3rd to 2nd find but not from 2nd to 1st under WOT. 3. can manually be shifted from 1st to 2nd to 3rd. 4. can be manually downshifted through all gears.This video is for you to diagnose the problem with your 4L60 transmission when 3rd or 4th gear won't engage, we show the parts that typically are bad when yo... on February 25, 2017. Right now this only occurs when engine is cold and only on the very first time of the day that it has to shift from 2nd to 3rd gear. It feels like it doesn't want to change gears and it has some difficulty getting up to speed from 30 to 40 mph. When it does, it kind of jerks into 3rd. Once it gets to 3rd gear, smooth and ...Under edit menu and calibration details it needs to say 4l80e for trans. I'm having almost an identical issue on an 06 TBSS with around 150k miles on her. No actual codes trip, just the P1815 gear code. It came to me after sitting at another shop that did a stroker and RPM trans. They R&R'd the trans 3 times.Overfilling will cause the transmission to overheat and set code P0218 — transmission fluid over temperature. The 6T40/45 uses a thermal element to control the oil level in the unit, similar to other GM units. Known as a fluid level control valve (figure 6), the unit is basically a thermally controlled standpipe.If your transmission is running low on transmission fluid, the first symptom is usually a hard shifting condition, meaning your car will jolt forward when it shifts. With enough fluid loss, your transmission will eventually be stuck in one gear. The best solution is to add the correct amount of the manufacturer's recommended transmission ...Answer (1 of 3): Computer controlled transmissions will get stuck in a high gear when there is no power to the transmission and also when the computer detects a fault in the transmission operation. This is called a "failsafe Mode" and allows the vehicle to be driven home or to a repair shop. Usua...Code 68 can be a slipping 4th gear (OD) and / or lock up clutch. that is why I asked about the code being set in 3rd gear , which BTW may not happen in normal driving while in the "D postiton. The slip rate may still be within set parameters in the programing Turning the ignition off and then on does not clear codes. Is this what you are doing?Then ran through the gear selector feeling it pop in to each gear(p-r, P-d,). Then the road test. I reversed put the selector into drive and the envoy had power going forward. Continued onto second gear and obviously the fluid was still being worked through the tranny because it took high rpms to get into 3rd at first.Jan 22, 2012 · 3rd and 4th gear are present: we know the direct clutch is capable of working and is good. 3rd and 4th gear not present: there may be an issue with a checkball leaking or missing in the valve body, and/or something with the seal rings and/or direct clutch drum fault. Engine braking in manual 1st: we know the Low/Reverse Band is capable of holding. 2012. 3. 13. · Illinois. Mar 13, 2012. #1. I have a 1993 chevy c3500 with the 6.5 and 4l80e . When we got the truck the guy told us it would kick out of overdrive. Once we got the engine in it it wouldn't shift unless you got around 3000-3500. Jan 22, 2012 · 3rd and 4th gear are present: we know the direct clutch is capable of working and is good. 3rd and 4th gear not present: there may be an issue with a checkball leaking or missing in the valve body, and/or something with the seal rings and/or direct clutch drum fault. Engine braking in manual 1st: we know the Low/Reverse Band is capable of holding. 2012. 3. 13. · Illinois. Mar 13, 2012. #1. I have a 1993 chevy c3500 with the 6.5 and 4l80e . When we got the truck the guy told us it would kick out of overdrive. Once we got the engine in it it wouldn't shift unless you got around 3000-3500. If your transmission is running low on transmission fluid, the first symptom is usually a hard shifting condition, meaning your car will jolt forward when it shifts. With enough fluid loss, your transmission will eventually be stuck in one gear. The best solution is to add the correct amount of the manufacturer's recommended transmission ...I had that issue on my k3500 with a 4l80e. I replaced the shift solenoids and that fixed it. May 9, 2014 #9 E eeehabt TYF Newbie Joined Apr 2, 2014 Posts 29 Reaction score 0 aztec said: I have a 2004 Yukon with 140000 miles on it and the transmission would not go into 3rd gear. the RPMS go all the way to 4000 but it wont go into 3rd.Basically everything to have it bolted up, plus 2 - 300 for extras. The 4l80e's price is the same, everything to bolt it in, plus some. The NV4500 would probally cost about 1000 - 1200 if I were to buy it outright, which is getting me a perfect transmission, rather than needing to do some work.I don't think you would want to shift from 2nd-3rd with the TCC locked. The ECM unlocks during a shift, probably for a good reason. The input shaft of the 4L80E is said to be a touch weak and prone to snapping when you shift with the TCC locked. Never broken one myself so I can't verify that are that weak per say.Joined Feb 4, 2008. 468 Posts. #6 · Jul 26, 2011. I have 104,000 miles on the 4L80E in my 98 K3500 but I bought it used with 94,600 miles on it so I don't know it's complete history. I had someone run my VIN through GM's inquiry system and it showed that the tranny valve body was R&R or replaced along with the PCM at 20,230 miles.P-R-N-D work, upshifts mostly work, no downshift into 1 from 2 or to 2 from 3, "stuck" in a certain gear: Pull out the wallet and grease pan. You have to replace the solenoids that control the 1-2 and 2-3 shifts, the "A" and "B" solenoids respectively (the 3-OD shift is not controlled via a solenoid…more on that later).Jan 11, 2007 · Subject: MIL On, Transmission Stuck in Second or Third Gear, IPC Inoperative, DTCs P0740,P0753,P0758,P0785,P0787,P0973,P0976,P1860,P2761,P2764 and/or P2769 Set (Verify and Repair Source of Voltage Loss #01-07-30-002E - (09/23/2005) Models: 2006 and Prior GM Passenger Cars and Light Duty Trucks 2005-2006 HUMMER H2 2006 HUMMER H3 Though the shell is supposed to be one piece, not only can it break off, but it can also strip out the splines. Hard Second Gear - The third most common symptom of a failing 4L60E transmission is the difficulty in shifting to the second gear. The second is so hard that it almost feels like a shift kit has been installed.I'm here searching for the answer/fix for my trans problem. The symptoms are as follows. Fire the rig up run down the road get one full cycle of shifts including o.d. with converter lock up. After about 30 seconds in o.d. truck drops to 3rd and remains there. For the remainder of that key cycle I have manual 2nd 3rd and reverse aka limp mode.#2 · Apr 2, 2010 Kieth if you could check with the sticky. there is a checklist to fill out. filling it out can help out alot. By the way Take off the passthrough connector and Verify voltage from pin E. It should be 12 volts to chassis ground. Verify to transmission ground as well. My bet it could be electrical. GBWhen your 4l60e starts to act up and not shift correctly, one very likely culprit is the shift solenoids. There are 2 shift solenoids in a 4l60e (1-2 and 2-3), and both control up and downshifts with fluid passing through them when commanded to do so by the computer. However, when they go bad, you will notice very quickly.Jan 12, 2010 · Some customers may comment on one or more of the following conditions: the MIL is on; the transmission is defaulted to second gear (4L80/85-E); the transmission is defaulted to third gear (4L60/65-E); the instrument cluster is inoperative. • Inhibiting fourth gear in hot mode. CODE 69- TCC Stuck ON Parameters: No codes 21,22,28,74 are set. TCC slip indicates TCC is ON. TCC is commanded OFF. TP sensor indicates load greater than 25%. D-4 or D-3 range is indicated. PCM commands unit to second or third gears. The above conditions are present for more than two seconds.. "/>.Dec 21, 2016 · 1996 GMC K1500 6.5 turbo, transmission problem (4L80E) 3rd Gear and Reverse only. First time I noticed any problem I selected 1st gear whilst travelling across a hay field and it felt like transmission was binding up (like transmission brake was on). Selected D and truck felt OK till I drove onto the road and realised no shifting, stuck in 3rd ... Set the dash shifter and transmission in the 3rd position. The transmission will be 2 clicks from park. Snap the cable back onto the shifter arm. Push the white button in to lock the cable in its adjusted position and slide the black retainer thing back over it. Start the truck up and check your gears. It should register correctly for all of them.Cars go in limp mode when the On-Board Diagnostic (OBD) system detects a critical problem. The main function of limp mode is to prevent further damage to the engine or transmission. Limp mode reduces engine output, limits the RPMs and speed, prevents the transmission from shifting gears. Limp mode allows you to reach up to 40 mph speeds. Take a few minutes to read this article, as you wait for ...1996 GMC K1500 6.5 turbo, transmission problem (4L80E) 3rd Gear and Reverse only. First time I noticed any problem I selected 1st gear whilst travelling across a hay field and it felt like transmissio ... The SES light is on and the van is stuck is 2nd gear only.Jul 21, 2022 · Why is my transmission stuck in 3rd gear? The first is that a solenoid in your transmission, which is the way that your car’s computer mechanically engages gear changes, has become stuck. The other cause is that your car may have activated something called “limp mode” due to faulty sensors. Where can you find a 4L80E transmission? Nov 30, 2008 · The reason the transmission was revving up going into OD was that 4th gear was slipping that much. After the transmission slipped a lot, it would go into limp mode, or stuck in 2nd gear as it's better known. I spoke to four different transmission shops, gathering advice. I had the 4th shop run a scan on it during a road test. 2012. 3. 13. · Illinois. Mar 13, 2012. #1. I have a 1993 chevy c3500 with the 6.5 and 4l80e . When we got the truck the guy told us it would kick out of overdrive. Once we got the engine in it it wouldn't shift unless you got around 3000-3500. 2012. 3. 13. · Illinois. Mar 13, 2012. #1. I have a 1993 chevy c3500 with the 6.5 and 4l80e . When we got the truck the guy told us it would kick out of overdrive. Once we got the engine in it it wouldn't shift unless you got around 3000-3500. • 4L80E applications fail to shift, or will drop into second gear intemittently. The customer may complain that the "vehicle is going to neutral at higher road speeds". • 4L60E fail to shift and may drop or stay in 3rd gear when the shift lever is in the OD position. 4L80E repeated solenoid B code 86 or 87, no 3rd or 4th gear, new springs for the 1-2 and 2-3 shift valves (2 springs) $ 6. Pulses means in this case Movements. # 4L80E -3/MA $3299. lq4, 2500hd, 4l80ethese are all words that don't belong.Aug 10, 2020 · Well, it is a good deal. :roflmao: What was the outcome with the truck? The issue Im trying to solve is inconsistent 1>2 shift execution under WOT w/ gear selector in Drive (3rd). 1st gear holds fine, 2nd gear holds fine, all gears shift fine and feel good under normal cruising or part throttle, there are no DTCs, etc. From looking at my data, it appears to me that its not commanding the 1>2 shift according to the speed/rpms I have set in the calibration.Unfortunately during the rebuild days I did the following (all of which I wish now that I did not do) Had the 3 pump modifications done 1) Under "X" drill a 3/64 (.042 - .055) hole thru side of wall in direction of arrow 2) enlarge the seal drain back hole in the pump cover with a .250" drill 3) used the new boost valve & spring supplied I also ...The transmission could have an issue with the shift solenoids. Check the wiring harness to the transmission case and make sure that it is plugged in. 3rd gear is the only forward gear in a 4L60E transmission that does not require electrical power. It is common for the electrical harness in the transmission to short out.Sep 06, 2016 · That is how the transmission was designed to work, but when it is time to perform the maintenance make sure you do something about it. That’ll help your 4L80E from having problems prematurely. No 3rd or 4th gear– This can be caused by many things. Here’s a whole writeup on it. 4L80E Problems: No 3rd or 4th gear The Detent Solenoid cannot stick open if power was never applied to it. Possible causes. Stuck 2-3 shift valve. Direct Clutch Piston seals hardened/worn. Center Support sealing rings worn &/or Worn Direct Drum.P0756 This DTC detects a Stuck Shift Solenoid by using incorrect Gear Ratios with the Commanded Gear. Commanded Gear = 1 Ratio = 4th > 2.5 sec AND Commanded Gear = 2 Ratio = 3rd > 2.7 sec STUCK Shift Pattern = 4-3-3-4• 4L80E applications fail to shift, or will drop into second gear intemittently. The customer may complain that the "vehicle is going to neutral at higher road speeds". • 4L60E fail to shift and may drop or stay in 3rd gear when the shift lever is in the OD position. Mar 07, 2009 · 700r4 vs 4l80e The difference is 40 lbs. Eat less for lunch, hit the gym and have salad once in a while 2. It takes more power to drive and will eat your gas mileage – again, not conclusive. Smoother gear changes and custom throttle settings more than mitigate this even if it were true. SKILLS REQUIRED 2004trans6_4L80E.doc Shift Solenoid A Performance NORMAL PATTERN 1-2-3-4 Shift Pattern 2-2-3-3 P0751 This DTC detects a Stuck Shift Solenoid by using incorrect Gear Ratios with the Commanded Gear. Commanded Gear = 1 and Ratio = 2nd > 2.0 sec AND Commanded Gear = 4/ with TCC Locked Ratio = 3rd > 3.75 seconds STUCK Shift Pattern = 2-2-3-33 Early Signs Of A Bad 4L80E Transmission Burning Smell. Generally, the burning smell in your car indicates that you are driving the clutch, which means that you are partially keeping it engaged when driving. Transmission fluid leaks. Shifting gear problem. Final note. What causes a 4L80E to go into limp mode?Jan 11, 2007 · Subject: MIL On, Transmission Stuck in Second or Third Gear, IPC Inoperative, DTCs P0740,P0753,P0758,P0785,P0787,P0973,P0976,P1860,P2761,P2764 and/or P2769 Set (Verify and Repair Source of Voltage Loss #01-07-30-002E - (09/23/2005) Models: 2006 and Prior GM Passenger Cars and Light Duty Trucks 2005-2006 HUMMER H2 2006 HUMMER H3 My transmission in my 1993 motorhome with a Chevy 4L80E (only 7000 miles on motorhome) will not shift into 3rd gear. The RPMs will jump up but the ****** will not shift. After that is set code 81 and will go into limp mode. I have checked the wiring, the soleniods will click when I ground them. I am not sure what to check next.95 4l60e not shifting past 2nd. 1,170. Asked by Jeremiah Sep 24, 2017 at 05:45 PM about the 1995 GMC Sierra 1500 K1500 SLE 4WD Extended Cab SB. Question type: Maintenance & Repair. I just bought a used trans from someone it had. 189xxx miles on it and it won't shift past 2nd in od. And when going down the road at about 40 and try.Jul 05, 2020 · 8. 4L80E - Gen 3 ? Inconsistent in Executing 1>2 Shift. The issue Im trying to solve is inconsistent 1>2 shift execution under WOT w/ gear selector in Drive (3rd). 1st gear holds fine, 2nd gear holds fine, all gears shift fine and feel good under normal cruising or part throttle, there are no DTCs, etc. From looking at my data, it appears to me ... Answer (1 of 3): Computer controlled transmissions will get stuck in a high gear when there is no power to the transmission and also when the computer detects a fault in the transmission operation. This is called a "failsafe Mode" and allows the vehicle to be driven home or to a repair shop. 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