4l80e Stuck In 2nd Gear

Broken or detached shifting linkage will cause the problem. Shift Solenoid B Performance / Stuck Off. Such noises indicate problems with the individual planetary gears, input shaft or interior transmission bearings. Car goes into gear but feels very sluggish like the brakes are dragging, but it will roll easily (starts out in 4th gear), you manually shift to 2 to get it moving, once it’s moving you put it back in OD and the car shifts 3rd to 4th on its own and locks the converter at the appropriate time: ShiftB solenoid failed: A wiring problem from PCM. Do not confuse a slipping transmission with a solenoid problem. Two codes popped up P0717 (turbine / input shaft speed sensor circuit no signal. When your transmission "slips", it may show an RPM of 3500+ or take a long time to coast. A bad "A" solenoid will kill low gear and OD. 4L80E repeated solenoid B code 86 or 87, no 3rd or 4th gear, new springs for the 1-2 and 2-3 shift valves. A bad "B" solenoid will kill 3rd gear and OD. com FREE DELIVERY possible on eligible purchases. 2-4 band is slipping. 2005trans6_4L80E. 0 sec AND Commanded Gear = 4/ with TCC Locked. A 4L80E defaults to 2nd gear when it has no solenoid function. This transmission shifted smooth and. Sudden grinding noise with no prior warning primarily in 2nd gear, behavior in reverse may be abnormal; sunshell is fractured. After driving about 8-10 miles the trans acts like it is going into neutral. 2005trans6_4L80E. Codes can be cleared by. SOURCE: automatic transmission is stuck in 2nd gear (limp mode) most newer vehicles have transmission control modules,that go to a default of 2nd or 3rd gear when they go bad! I had a 91 plymouth stuck in 3rd gear because of this module! could be your problem!. If this is your first visit, be sure to check out the FAQ by clicking the link above. Forgive my total ignorance in the field of automatic transmissions. Healthy transmissions keep your car in one gear until you decide to change the gear. When I rev up, nothing happens. DTC P0730 Transmission Incorrect Gear Ratio. When actually it goes in to 2nd. I have a 93 chevy C2500 3/4 ton it has the 4L80E in it and I have no knowledge what so ever on electric trans all I see on the tranny is it has the wiring harness coming out of the side and a rubber hose hooked to a plastic grommet on the top of the tranny and the shift lever linkage I am driving and the RPMS are 2500 @ 30 MPH which I don't know if its first or second gear it is stuck in. Do not confuse a slipping transmission with a solenoid problem. I blamed it on my wiring at first, but I believe its my transmission. The only way to retrive trouble codes is with a scanner such as Tech 2 , snap-on, otc or equivelent. Or if it's a quick fix, I'd rather keep the 4l60e until the 4l80e is fully rebuilt. My Transmission Will Not Shift! The transmission is as necessary in a vehicle as the engine itself. Commonly this problem is caused by a bad speed sensor. Though most automatic transmission diagnoses and repairs are beyond the scope of the home mechanic, you can diagnose some common issues without specialized tools or training. EZ-TCU stuck in L2 gear selection. No 2nd or 4th gear. 4L80E 2nd Gear Starts after rebuild I'm going to tear into the valve body after work and see if the AFL valve is stuck or the 1-2 shift valve is stuck in the. I have a 1992 Chev C3500 Dually 7. It also contained the Julian date for time of day and the shift it was built on. Reaction shell gear stripped. Forgive my total ignorance in the field of automatic transmissions. Get a scanner on the truck first though before just replacing it. Unfortunately, although the noise is quieter in third gear, it is still there. I have no transmission codes, and the dealer says that it is internal problems. Technician A says a problem with the circuit's accumulator will result in this condition. In order to find and fix this problem you will need a scanner to read the live data from the pcm " a code reader will not do the trick to solve your problem. How to 4L60E to 4L80E trans swap. Park, neutral, reverse are fine. It will not upshift nor downshift it is stuck there where it w. GM 4L80-E and 4L85-E transmissions may have 2nd gear starts and no upshifts, which can be accompanied by trouble codes 68, 85, 86 and/or 87. Put it in drive and it feels like it's stuck in second. 4L80E Transmission: Pre-1993 4L80E transmissions use a different internal wiring harness and pass-through connector. 1st gear = 2. But instead of shifting to 3rd, when I step back on the throttle, I don't have any. Park, neutral, reverse are fine. See all problems of the 2002 GMC Sierra. I have the shop manuals that describe the condition and possible cause,. I had the car running fine and shifting fine. DTC P0730 Transmission Incorrect Gear Ratio. That may include but is not limited to vehicles from Chrysler, Ford, Dodge, Hyundai, Kia, Ram, Lexus, Toyota, Mazda, Honda, VW, etc. /////Update////. Use with engines producing up to 750 foot pounds of torque in vehicles weighing up to 4000 pounds. I have a 93 chevy C2500 3/4 ton it has the 4L80E in it and I have no knowledge what so ever on electric trans all I see on the tranny is it has the wiring harness coming out of the side and a rubber hose hooked to a plastic grommet on the top of the tranny and the shift lever linkage I am driving and the RPMS are 2500 @ 30 MPH which I don't know if its first or second gear it is stuck in. I have no transmission codes, and the dealer says that it is internal problems. Such noises indicate problems with the individual planetary gears, input shaft or interior transmission bearings. At the present time it will only run in 2nd and 3rd gears, and the converter will not lock up. If your shift solenoids were stuck on or were bad you would have other signs. I have a consistant shifting driveline clunk that only occurs when the transmission upshifts from 2nd to 3rd gear and then downshifts from 3rd to 2nd gear. My Transmission Will Not Shift! The transmission is as necessary in a vehicle as the engine itself. It was running and shifting great then the alternator went out. I have a 93 chevy C2500 3/4 ton it has the 4L80E in it and I have no knowledge what so ever on electric trans all I see on the tranny is it has the wiring harness coming out of the side and a rubber hose hooked to a plastic grommet on the top of the tranny and the shift lever linkage I am driving and the RPMS are 2500 @ 30 MPH which I don't know if its first or second gear it is stuck in. Chevrolet Impala Transmission Pressure Control Solenoid Failure May Cause Erratic Shifting - 1323 reports. It's located in the valve body and can be changed without removing the trans. you can pull the servo assm and check it. 95' 4L80E only got 2nd & reverse. 0 and a 4l80e transmission out of a 2005 chevey high output and dropt in my car and every thing runs fine but the transmission seamsto be stuck in 2nd gear iff eny one nows what the problem might be would apreaciat the info thank you. I have the shop manuals that describe the condition and possible cause,. My agency is getting a 2009 Humvee and they are telling me that It DOES NOT SHIFT INTO HIGHWAY SECOND GEAR MAY BE MODULATOR VALVE?? Anyone have any help into this? A 2009 would be a 4L80E equipped truck, not a TH400, so the trans is most likely in limp modethat can be for a host of reasons. Other wise it coasted above engine rpms. Learn what does P0752 Chevrolet 1-2 Shift Solenoid Valve Performance - No Second or Third Gear means, location and how to repair? The 1-2 shift solenoid (SS) valve controls the fluid flow acting on the 1-2 and 3-4 shift valves. Such noises indicate problems with the individual planetary gears, input shaft or interior transmission bearings. Pulled engine to change compression ratio and after putting it back in the car, it won't shift out of second. Buy ACDelco 24230298 GM Original Equipment Automatic Transmission 1-2 and 3-4 Shift Solenoid Valve: Hard Parts - Amazon. 7 liter gas engine or the 6. 4l80e transmission. Your transmission relies upon the positions of multiple solenoids to control the gear selection. 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. I am having very hard shift from 1st to 2nd gear, harded after it gets warmed up. When actually it goes in to 2nd. You can view the A solenoid activity on to see what you come up with. i wanted a new transmission but the warranty says rebuild. © 2018 precision performance products. Wear and tear on parts such as bearings or gear teeth often cause noises that indicate a failing transmission. Use a stock bushing with red loctite and staked in place. 2005trans6_4L80E. Designed for longitudinal engine configurations, the series includes 4 forward gears and 1 reverse gear. 2nd Gear Switch Circuit Problem or Open 4th Gear Switch Open Throttle Switch Circuit (DFI) 28: 3rd Gear Switch Circuit Problem or Open 4th Gear Switch Open 4th Gear Switch (DFI) Pressure Switch Manifold (4L60E, 4L80E) 29: 4th Gear Switch Circuit Problem Canister Purge Solenoid Voltage High (Carb) Shorted 4th Gear Switch (DFI) 30: ISC Circuit. As you get into the low 10 second ¼ mile times, you may start to see some differences between a lightweight transmission and a heavier one. Buy 4L80E 1-2 A Shift Solenoid and 2-3 B Shift Solenoid Set 1991 and up GM: Kick-Down Solenoids - Amazon. Delay Going in Gear/ Between Gears– If there is a long pause between gear selection and engagement, it can often be attributed to a faulty shift solenoid. com FREE DELIVERY possible on eligible purchases. The 4L80E's ratios from First to Reverse are: 2. 0 vortex max package. Forgive my total ignorance in the field of automatic transmissions. Thats when it all started. /////Update////. drove the van home that evening stuck in second gear and went through 20 gal of gas in 40 miles. His were having trouble at a lot less than 190K though! The 4L80E is a tough transmission; it sounds like yours has been taken good care of. 2005trans6_4L80E. It's located in the valve body and can be changed without removing the trans. There are four things that can cause your problem. But a stock 4L80E and TH400 are both rated at 440 lb/ft for engine torque and 885 lb/ft for gearbox torque. Pick-Up Trucks, Large Passenger and Cargo Vans, Campers, Trailers, RV's and Motor Homes - Gm 4L80e transmission not shifting - Hello, I'm a mechanic in the marine corp. Try not to run or drive the car or further damage could result. 1st gear = 2. 0 sec AND Commanded Gear = 4/ with TCC Locked. No 2nd or 4th gear. 43 3rd gear = 1. When actually it goes in to 2nd. With that said, the 4l80e gearing is obviously much different than the T56, so since I believe the PCM back calculates the current gear, I'm not sure what the PCM will do. Or if it's a quick fix, I'd rather keep the 4l60e until the 4l80e is fully rebuilt. Crazy coincidence is just last night while I was working, I was talking with another driver and he told me a story about a few trucks of his with 4L80E's in the past where he had lots of solenoid problems. The 4L60E and 4L65E are built at Toledo Transmission in Toledo, Ohio and have also been built at Romulus Transmission in Romulus, Michigan and Ramos Arizpe , Mexico. DTC 85 on 95 Chevy G30 5. Listen for any rumbling, growling or mechanical metal-to-to metal noise in each gear just after it shifts. Could also be a wiring problem to the A solenoid. It also contained the Julian date for time of day and the shift it was built on. here's a pretty good explanation of why a 4L80E is better than a 4L60E and why the guys in the US are doing the swaps. For comparison purposes, the MKIV stock tranny (A340E) gear ratios are: 1st=2. all that was wrong with mine was a dirty connection at the plug it shifts fine now. A stuck valve in the valve body. Sounds like the "A" shift solenoid is stuck or defective. Found this on another forum and thought it was interesting. The speed sensor can cause this type of confusion. 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). Shorted 4th Gear Switch Circuit or Open 3-4 Shift Solenoid (Allanté) 58: Antitheft System Problem Transmission Temperature High (4L60E, 4L80E) Pass Key Fuel Enable Circuit: 59: Transmission Temperature Circuit Problem (DFI) Transmission Temperature Circuit Low (4L60E, 4L80E) 60: Cruise Control — Transmission Not in Drive: 61. I have a 93 chevy C2500 3/4 ton it has the 4L80E in it and I have no knowledge what so ever on electric trans all I see on the tranny is it has the wiring harness coming out of the side and a rubber hose hooked to a plastic grommet on the top of the tranny and the shift lever linkage I am driving and the RPMS are 2500 @ 30 MPH which I don't know if its first or second gear it is stuck in. As an aid to the. This is known as running in LIMP IN MODE. Am I right?. 4l80e stuck in 2nd gear - Answered by a verified GMC Mechanic We use cookies to give you the best possible experience on our website. 0 and a 4l80e transmission out of a 2005 chevey high output and dropt in my car and every thing runs fine but the transmission seamsto be stuck in 2nd gear iff eny one nows what the problem might be would apreaciat the info thank you. Use with engines producing up to 750 foot pounds of torque in vehicles weighing up to 4000 pounds. Try not to run or drive the car or further damage could result. GMH GM Holden Commodore Omega 4L60E 4L65E Auto Trans Transmission Gearbox stuck in Limp Mode Limp Home Mode ( 3rd Gear Only ) & Manual 2nd Only - DIY How To. There is no little clunk like usual. Trusted by transmission remanufacturers & valve body rebuilders since 1978. Shifts into gear harshly, car feels sluggish off the line, No 1st, 4th or Torque Converter Control (TCC) lockup available, Manual 2nd, 3rd and Reverse are only available gears, CEL is on Transmissionmision is either in limp-home mode or has lost electrical power. Shift Solenoid B Performance / Stuck Off. A common problem on many General Motors cars is the Torque Converter Clutch fails to release and causes the car to stall when it comes to a stop. I have a 2006 Tacoma D-cab 4x4 with 131,k miles. Car goes into gear but feels very sluggish like the brakes are dragging, but it will roll easily (starts out in 4th gear), you manually shift to 2 to get it moving, once it’s moving you put it back in OD and the car shifts 3rd to 4th on its own and locks the converter at the appropriate time: ShiftB solenoid failed: A wiring problem from PCM. The 1st digit being the year, the 2nd digit being the body code, the 3rd being the internal gear-train. I've done some driving around and from what I can tell, it' a control problem. I'm having the same problem, except mine seems to be stuck in 3rd. I am having very hard shift from 1st to 2nd gear, harded after it gets warmed up. When 3rd is in, it's solid, but more often then not, when it's supposed to shift to 3rd from 2nd, it actually go's to first. If your car with an automatic transmission is stuck in a certain gear and refuses to shift up or down, there are two common causes. Learn what does P0756 Shift Solenoid 'B' Performance or Stuck Off means, location and how to repair? Shift solenoid valve 'B' is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP). Transmission electrical diagnosis troubleshooting help on all your transmission problems or questions. Technician B says that accumulator's contain a spring that may be broken. 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. 7 liter RPM's are like 3200 @ 35 MPH which definitly aint good will not shift just stays in 2nd I think maybe 1st or 3rd but not fourth. 5 years 2 weeks ago #114503 by Meridivs. GMH GM Holden Commodore Omega 4L60E 4L65E Auto Trans Transmission Gearbox stuck in Limp Mode Limp Home Mode ( 3rd Gear Only ) & Manual 2nd Only - DIY How To. Learn what does P0756 Shift Solenoid 'B' Performance or Stuck Off means, location and how to repair? Shift solenoid valve 'B' is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP). My 700r4 with 3. P0752 is a diagnostic trouble code (DTC) for "Shift Solenoid A Stuck On". Undercuts behind the splines are reduced, resulting in increased spline length and diameter, increasing spline engagement at the forward clutch hub and rear internal gear interfaces. This early harness has a problem with leaking fluid at the pass-through connector. The gear ratios for the 4L80E are: 1st=2. Use with engines producing up to 750 foot pounds of torque in vehicles weighing up to 4000 pounds. So I changed both shift Solenoids and changed the fluid in the pan, but no change any advise about what might be going on or how to fix would be greatly appreciated. Though most automatic transmission diagnoses and repairs are beyond the scope of the home mechanic, you can diagnose some common issues without specialized tools or training. P0756 Tech Notes When the a transmission solenoid is stuck off, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. Buy ACDelco 24230298 GM Original Equipment Automatic Transmission 1-2 and 3-4 Shift Solenoid Valve: Hard Parts - Amazon. Shifts into gear harshly, car feels sluggish off the line, No 1st, 4th or Torque Converter Control (TCC) lockup available, Manual 2nd, 3rd and Reverse are only available gears, CEL is on Transmissionmision is either in limp-home mode or has lost electrical power. if you have 4th then the band is fine. Range Position 1 - First Gear and Second Gear Range Position 2 - First Gear and Second Gear Range Position D - Third Gear Range Position OD - Fourth Gear (overrun clutch is not applied in this position but engine braking is present) There are two ways to provide engine braking to the 4L60E at all times. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. We provide a large inventory selection for 4L80E automatic transmission overhaul kits, parts including steels, kits, solenoids, filters, solenoids. ) and P0752 (Shift solenoid A stuck on) Fluid and connections are fine. Broken or detached shifting linkage will cause the problem. The 1st digit being the year, the 2nd digit being the body code, the 3rd being the internal gear-train. I have a 89 camaro and got a vortec 6. Shifts into gear harshly, car feels sluggish off the line, No 1st, 4th or Torque Converter Control (TCC) lockup available, Manual 2nd, 3rd and Reverse are only available gears, CEL is on Transmissionmision is either in limp-home mode or has lost electrical power. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. My 700r4 with 3. The bold section was the only reason I suggested the 4l80e, but the 700r4 would work also. 4L80E 2nd & 3rd gear only. Mainshaft is manufactured from proprietary steel billet material. That may include but is not limited to vehicles from Chrysler, Ford, Dodge, Hyundai, Kia, Ram, Lexus, Toyota, Mazda, Honda, VW, etc. No 2nd or 4th gear. I have a 1992 Chev C3500 Dually 7. Several things can cause your transmission to be stuck in second gear. Won't shift manually either. Put it in drive and it feels like it's stuck in second. This is a good gamble to repair the code without replacing the transmission and typically costs about $200 to $250. 3rd direct W/ 5:38s is like halfway between 3rd and 2nd w/4:57s, which is perfect on hills at 55-60, and is not as big a drop as going all the way down to 2nd and. Since third gear has a 1:1 ratio, The planetary are not rotating relative to each other while the transmission is in third gear. Learn what does P0756 Shift Solenoid 'B' Performance or Stuck Off means, location and how to repair? Shift solenoid valve 'B' is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP). Kasey Nesselrotte 16,536 views. I have a code 68, which is "transmission component slipping" and means the slip speed when TCC engaged has been greater than 200 rpm for 2 seconds or more. A stuck valve in the valve body. OBD II fault code P0751 is a generic code that is defined as "Shift solenoid (SS) "A" -performance or stuck off", and is set when the PCM (Powertrain Control Module) or TCM (Transmission Control Module) detects an abnormal signal voltage, or a voltage that indicates that the transmission shift solenoid labelled "A" is stuck in the. P0752 GMC Tech Notes When the a transmission solenoid is stuck on, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. The 4L80E's ratios from First to Reverse are: 2. The most important thing to remember, when trying to decide if you have a solenoid issue or internal transmission damage (causing the transmission to stay in Limp-In mode) is two very important things:. 95 Silverado 2500: wheel drive. Found this on another forum and thought it was interesting. It's located in the valve body and can be changed without removing the trans. As the owner of a vehicle, the only thing you can do to diagnose why you have a slipping transmission is to check the transmission fluid level and condition. I have a 1992 Chev C3500 Dually 7. You may have to register before you can post: click the register link above to proceed. 7 liter RPM's are like 3200 @ 35 MPH which definitly aint good will not shift just stays in 2nd I think maybe 1st or 3rd but not fourth. Several things can cause your transmission to be stuck in second gear. Could also be a wiring problem to the A solenoid. Won't shift manually either. net is the home of the Transmission Rebuilders Network offering the leading transmission rebuilder forum in the transmission industry. Or if it's a quick fix, I'd rather keep the 4l60e until the 4l80e is fully rebuilt. Shifts into gear harshly, car feels sluggish off the line, No 1st, 4th or Torque Converter Control (TCC) lockup available, Manual 2nd, 3rd and Reverse are only available gears, CEL is on Transmissionmision is either in limp-home mode or has lost electrical power. Buy ACDelco 24230298 GM Original Equipment Automatic Transmission 1-2 and 3-4 Shift Solenoid Valve: Hard Parts - Amazon. 43 3rd gear = 1. The car runs like a million bucks, and 1st & 2nd gear are great! But I don't have a 2nd to 3rd shift. Be sure they are installed in the new transmission. A bad gear selector switch. Learn what does P0756 Shift Solenoid 'B' Performance or Stuck Off means, location and how to repair? Shift solenoid valve 'B' is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP). With that said, the 4l80e gearing is obviously much different than the T56, so since I believe the PCM back calculates the current gear, I'm not sure what the PCM will do. I Recently ran into a problem with my 05 envoy slt 4x4. This is known as running in LIMP IN MODE. Try not to run or drive the car or further damage could result. 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); or the instrument cluster is inoperative. A single gear can be chipped or worn down, allowing only a noise in that gear. GMC 2002 1/2 ton pickup,transmission reverse went out at 44,000 miles (first time it went out at 28,000 miles). I have no transmission codes, and the dealer says that it is internal problems. But a stock 4L80E and TH400 are both rated at 440 lb/ft for engine torque and 885 lb/ft for gearbox torque. How to 4L60E to 4L80E trans swap. As the owner of a vehicle, the only thing you can do to diagnose why you have a slipping transmission is to check the transmission fluid level and condition. When I rev up, nothing happens. This is likely due to the throttle position sensor, or TPS for short. Is the trans shifting through all the gears? Symptoms for that code and a bunch of others, are that trans is stuck in 2nd or 3rd gear or instrument panel is not working. Common problems with the 4L60E transmission include the third and fourth gears not working, slow or slipping reverse gear and sudden grinding noise in second gear. Swapped out with another transmission I had, and does the same thing. If you have reverse and you can get on it in reverse with out it slipping, I would say MAYBE it's not the sunshell. Re: 4l80E conversion and jackshit? how high is really high? a combination of a higher than syock stall and locked in 2nd gear could cause that. I'm having almost an identical issue on an 06 TBSS with around 150k miles on her. You can view the A solenoid activity on to see what you come up with. His were having trouble at a lot less than 190K though! The 4L80E is a tough transmission; it sounds like yours has been taken good care of. We provide a large inventory selection for 4L80E automatic transmission overhaul kits, parts including steels, kits, solenoids, filters, solenoids. Sudden grinding noise with no prior warning primarily in 2nd gear, behavior in reverse may be abnormal; sunshell is fractured. That gives me the same overall ratio in OD as a 4:56 in direct, which allows me to use the OD as a gear splitter which makes a HUGE difference in driveability with the trailer. Could also be a wiring problem to the A solenoid. GM recommends upgrading to the newer connector and wiring harness. If your shift solenoids were stuck on or were bad you would have other signs. Installing a 4L80E where a 60 once was requires a bit of work and, depending on your chassis, some new parts, but it doesn't take a rocket surgeon to get the swap done. It will not upshift nor downshift it is stuck there where it w. Be sure they are installed in the new transmission. i will be taking them up on that new 100,000mile factory warranty. Or if it's a quick fix, I'd rather keep the 4l60e until the 4l80e is fully rebuilt. A 25% duty cycle means that the PWM solenoid is powered on 25% of the time and off 75%. we've had an m1115 hmmwv in our. The 4l80e only has reverse and second gear. When I say shift im not talking about P N or R like when you are in drive (it is a automatic) it seems like it is stayin in 2nd gear it is a 4 speed I think the transmission is a L840E I think I have no clue it is in a 1993 C2500 3/4 Ton chevy 350 5. With that said, the 4l80e gearing is obviously much different than the T56, so since I believe the PCM back calculates the current gear, I'm not sure what the PCM will do. 56 and 37's should be about the same. Transmission won't engage Drive or Reverse was created by Meridivs. second gear…. OBD II fault code P0751 is a generic code that is defined as "Shift solenoid (SS) "A" -performance or stuck off", and is set when the PCM (Powertrain Control Module) or TCM (Transmission Control Module) detects an abnormal signal voltage, or a voltage that indicates that the transmission shift solenoid labelled "A" is stuck in the. Furthermore, if there seems to be a lot of time between when the transmission exits one gear and enters. I have a 1992 Chev C3500 Dually 7. Whether you need 4L80E wiring diagram information, 4L80E transmission rebuilders tips, 4L80E technical information, 4L80E diagnostics, 4L80E troubleshooting help, or just answers to your 4L80E transmission rebuilders question, the Transmission Rebuilders Network is the place to go!. If this is your first visit, be sure to check out the FAQ by clicking the link above. 1st gear DOES NOT WORK 2nd gear DOES NOT WORK When I pick Drive, 1st or 2nd with the select lever, I hear nothing. 2nd Gear Switch Circuit Problem or Open 4th Gear Switch Open Throttle Switch Circuit (DFI) 28: 3rd Gear Switch Circuit Problem or Open 4th Gear Switch Open 4th Gear Switch (DFI) Pressure Switch Manifold (4L60E, 4L80E) 29: 4th Gear Switch Circuit Problem Canister Purge Solenoid Voltage High (Carb) Shorted 4th Gear Switch (DFI) 30: ISC Circuit. P0752 - GM; Type: Powertrain - Transmission - ISO/SAE Controlled: Description: 1-2 Shift Solenoid - No 2nd or 3rd Gear (4T80 - E Transmission) Cause: DTC P0121, P0122, P0123, P0502, P0503, P0716, P0717, P1820, P1822, P1823, P1825, P1842, P1843, P1845 and P1847 not set, engine runtime over 5 seconds, Fuel Cutoff inactive, IMS indicates D1, D2, D3 or D4, TFT sensor input from 68°F-271°F. 2nd Gear More. Buy ACDelco 24230298 GM Original Equipment Automatic Transmission 1-2 and 3-4 Shift Solenoid Valve: Hard Parts - Amazon. Delay Going in Gear/ Between Gears– If there is a long pause between gear selection and engagement, it can often be attributed to a faulty shift solenoid. There are four things that can cause your problem. This truck spins through most gears and lifts the front wheels 12" off the ground. When 3rd is in, it's solid, but more often then not, when it's supposed to shift to 3rd from 2nd, it actually go's to first. GMC 2002 1/2 ton pickup,transmission reverse went out at 44,000 miles (first time it went out at 28,000 miles). drove the van home that evening stuck in second gear and went through 20 gal of gas in 40 miles. The GM 4L60E/65E/70E-4L80E/85E Diagnostic Code Book is designed to provide the technician with a step by step diagnostic approach to each and every transmission code available from 1991 to the 2007 model year. here's a pretty good explanation of why a 4L80E is better than a 4L60E and why the guys in the US are doing the swaps. A common problem on many General Motors cars is the Torque Converter Clutch fails to release and causes the car to stall when it comes to a stop. OBD II fault code P0751 is a generic code that is defined as "Shift solenoid (SS) "A" -performance or stuck off", and is set when the PCM (Powertrain Control Module) or TCM (Transmission Control Module) detects an abnormal signal voltage, or a voltage that indicates that the transmission shift solenoid labelled "A" is stuck in the. The lower first gear, and OD will work great with that set up. Be sure they are installed in the new transmission. DTC P0730 Transmission Incorrect Gear Ratio. The gear ratios for the 4L80E are: 1st=2. i bought a new style 07 1500 w/the 6. ) and P0752 (Shift solenoid A stuck on) Fluid and connections are fine. A 4L80E defaults to 2nd gear when it has no solenoid function. The 4L80E is dependent on the Engine Control Module (ECM) for shifts. 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. It only works when the shifter is in OD. tbi 350 and a 4l80e. 73 and 33's work great together. I have a code 68, which is "transmission component slipping" and means the slip speed when TCC engaged has been greater than 200 rpm for 2 seconds or more. His were having trouble at a lot less than 190K though! The 4L80E is a tough transmission; it sounds like yours has been taken good care of. It will not shift into any higher gears. it came apart and gm said they will rebuild it. FLT 2nd gear clutch kit ; These pins will sometimes get stuck in the engine. if you have 4th then the band is fine. Almost every rear-wheel drive vehicle manufactured by General Motors features the 4L60E transmission. It was running and shifting great then the alternator went out. P0752 - GM; Type: Powertrain - Transmission - ISO/SAE Controlled: Description: 1-2 Shift Solenoid - No 2nd or 3rd Gear (4T80 - E Transmission) Cause: DTC P0121, P0122, P0123, P0502, P0503, P0716, P0717, P1820, P1822, P1823, P1825, P1842, P1843, P1845 and P1847 not set, engine runtime over 5 seconds, Fuel Cutoff inactive, IMS indicates D1, D2, D3 or D4, TFT sensor input from 68°F-271°F. Healthy transmissions keep your car in one gear until you decide to change the gear. I blamed it on my wiring at first, but I believe its my transmission. we've had an m1115 hmmwv in our. 95 4th gear = 0. The transmission could have an issue with the shift solenoids. com FREE DELIVERY possible on eligible purchases. Check the wiring harness to the transmission case and make sure that it is plugged in. Reaction shell gear stripped. GM 4L80-E and 4L85-E transmissions may have 2nd gear starts and no upshifts, which can be accompanied by trouble codes 68, 85, 86 and/or 87. When I rev up, nothing happens. Now when I put the truck in "Drive" it doesn't always go into gear right away and revs and then "bangs" into first gear. We provide a large inventory selection for 4L80E automatic transmission overhaul kits, parts including steels, kits, solenoids, filters, solenoids. 5 years 2 weeks ago #114503 by Meridivs. It's located in the valve body and can be changed without removing the trans. doc Page 5 of 12 5 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. FLT 2nd gear clutch kit ; These pins will sometimes get stuck in the engine. When I say shift im not talking about P N or R like when you are in drive (it is a automatic) it seems like it is stayin in 2nd gear it is a 4 speed I think the transmission is a L840E I think I have no clue it is in a 1993 C2500 3/4 Ton chevy 350 5. DTC 85 on 95 Chevy G30 5. At the present time it will only run in 2nd and 3rd gears, and the converter will not lock up. It was running and shifting great then the alternator went out. The most important thing to remember, when trying to decide if you have a solenoid issue or internal transmission damage (causing the transmission to stay in Limp-In mode) is two very important things:. A4 4l60e Trans won't shift out of 1st gear. Other wise it coasted above engine rpms. The 4L60E and 4L65E are built at Toledo Transmission in Toledo, Ohio and have also been built at Romulus Transmission in Romulus, Michigan and Ramos Arizpe , Mexico. 0 sec AND Commanded Gear = 4/ with TCC Locked. It's been shifting in and out of 3rd intermittently. if you have 4th then the band is fine. I have the shop manuals that describe the condition and possible cause,. This is a computer controlled transmission first introduced in G. 70 Stuck OFF 2nd occurrence Stuck ON 5th occurrence Continuous DTC Type B Shift Solenoid A Electrical (1-2 Shift Solenoid) P0753 0V to 12V This DTC detects a continuous open or short to ground in the SSA circuit or the SSA solenoid. Put it in drive and it feels like it's stuck in second. Designed for longitudinal engine configurations, the series includes 4 forward gears and 1 reverse gear. 14 R Line from manual valve in “R”. A single gear can be chipped or worn down, allowing only a noise in that gear. P0752 GMC Tech Notes When the a transmission solenoid is stuck on, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. Or if it's a quick fix, I'd rather keep the 4l60e until the 4l80e is fully rebuilt. I've done some driving around and from what I can tell, it' a control problem. A practical solution: Install TransGo relief assembly intersecting #14 oil circuit that would only operate during a high line pressure malfunction. Shorted 4th Gear Switch Circuit or Open 3-4 Shift Solenoid (Allanté) 58: Antitheft System Problem Transmission Temperature High (4L60E, 4L80E) Pass Key Fuel Enable Circuit: 59: Transmission Temperature Circuit Problem (DFI) Transmission Temperature Circuit Low (4L60E, 4L80E) 60: Cruise Control — Transmission Not in Drive: 61. No 2nd or 4th gear. If this is your first visit, be sure to check out the FAQ by clicking the link above. 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. i bought a new style 07 1500 w/the 6. How to 4L60E to 4L80E trans swap. Again, I'm hopeful this is related to the switch as logging 'current gear' in Hptuners shows that it thinks it's in neutral all the time. 2005trans6_4L80E. Several things can cause your transmission to be stuck in second gear. However a lack of 12V supply can happen anywhere from the battery-ignition switch-fuse block- harness- connector- internal harness. 73 and 33's work great together. Forgive my total ignorance in the field of automatic transmissions. Remove & Replace. Wear and tear on parts such as bearings or gear teeth often cause noises that indicate a failing transmission. Under edit menu and calibration details it needs to say 4l80e for trans. It's located in the valve body and can be changed without removing the trans. A broken shifting for in the transmission can also cause the. /////Update////. Or if it's a quick fix, I'd rather keep the 4l60e until the 4l80e is fully rebuilt. When your transmission "slips", it may show an RPM of 3500+ or take a long time to coast. His were having trouble at a lot less than 190K though! The 4L80E is a tough transmission; it sounds like yours has been taken good care of. Pulled engine to change compression ratio and after putting it back in the car, it won't shift out of second.