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My 1995 K2500 pickup w/4L80E shows 81 and 83 error codes, 2-3 shift circuit and TCC. Resetting computer I can drive for days and distance without the errors. I replaced both solenoids and still get the errors. What's my next step?

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6ya6ya
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Posted on Jan 02, 2017

  • 289 Answers

SOURCE: 2002 Sunfire TCC Solenoid replacement

hi..the transaxle converter clutch . tcc. uses a solenoid -operated valve located in the automatic transaxle to mechanically couple the engine flywheel to the output shaft of the transmission through the torque converter.that reduces the slippage loss in the converter.reducing emissions.but check the vss first.which is called the vehicle speed sensor.they both work together .if the vss is not working right it wont call on the tcc.
check this out..
thank u..
rate me..

Posted on Mar 06, 2009

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SOURCE: 1st and 2nd shift error on code reader in trans

Shift error codes are enabled not only if the solonoids are faulty, does your scanner show you the solonoids switching? you could have a wiring fault. It could also be the pcm not allowing the solonoids to activate. These complicated systems are very difficult to diagnose for us profesionals with all the scanners and machines we have. Find a transmission shop in your area with a system to drive the vehicle bypassing the computor system, this will determine electrical or internal trans failure. But before you do anything check your conections from the transmission to the pcm. Also all the engine conectors and earth straps.

Posted on Dec 20, 2008

stevehinrich
  • 61 Answers

SOURCE: 1997 blazer sluggish in drive reverse is fine

P0740 is TCC circuit malfunction P0753 is shift solenoid A circuit electrical P0758 is shift solenoid B P1406 is EGR pintle position and P01860 is TCC circuit.

Posted on Feb 28, 2009

polarcycle
  • 1392 Answers

SOURCE: I recently had a diagnostics done on my 2000 Isuzu

If it is in the solenoid itself, yes. If it is in the wiring or the computer, no. The only way to tell, is to replace the solenoid and turn off the light. Or do some extensive search in the wiring harness.

Posted on Mar 07, 2009

  • 226 Answers

SOURCE: My name is Kenny from Dalas, Texas I have a 95 1

Shifting hard goes to line pressure. Check the filter you put in. There's a short version and a long version. If you have the long version in there, it will bottom out in the pan. Do not change the solenoids because it already shifts differently after changing the filter.

Posted on Aug 16, 2009

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My 1995 4l80e trans will shift into third only when i floor it but when i let off throttle it seems to go to nutrall and help would be appreashed


run the fault codes and look for faulty servo/solenoids and TCM
it could also be a oil level or oil condition problem
I suggest a visit to an accredited auto shop specialist for a proper diagnosis before you waste money
if a new box is suggested get second and third opinion and quotes

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IS A 1995 CHEVY 2500 4L80E AND 1995 GMC 2500 4L60E THE SAME


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My '93 suzuki sidekick automatic transmission 4 wheel drive after warm up "overdrive off" starts flashing on and off and when on the drivetrain stops working


The O/D light's flashing means there is some kind of transmission trouble.

The codes are..


Trouble Code (1) Probable Cause
12 ............................... System Operation Normal
21 ..................... No. 1 Shift Solenoid Open Circuit
22 .................... No. 1 Shift Solenoid Short Circuit
23 ..................... No. 2 Shift Solenoid Open Circuit
24 .................... No. 2 Shift Solenoid Short Circuit
25 ............................. TCC Solenoid Open Circuit
26 ............................ TCC Solenoid Short Circuit
31 ............ Vehicle Speed Sensor Open Or Short Circuit
32 ................ Throttle Position Sensor Short Circuit
33 ................. Throttle Position Sensor Open Circuit
34 ................ Defective Park/Neutral Position Switch
36 .............. (2) No Signal-Both Vehicle Speed Sensors
(1) - Check listed component for probable cause. Also check wiring and connections of specified component.
(2) - No signal from both transmission and speedometer mounted vehicle speed sensors.

If a trouble code is present, OD OFF light will flash a trouble code. The number of flashes will equal first digit of trouble code. After a one second pause, second digit will be displayed. If more than one trouble code is present, next trouble code will be displayed after a 3 second pause. Smallest number trouble code will be displayed first. Trouble codes will be repeated.

Hope this gave you some insight on the issue.

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VSS is still good if you have your cruise control and speedometer working, it's common for the wire harness to the solenoid on the passenger side to get corroded and or the sires to break due to the heat given off from the catalytic converter beside the transmission. Check the condition of the wire harness and clean the contacts with brake cleaner and reinstall with some grease to keep the corrosion away, hint use marine grease. Marine grease cost a few cents more but resist water longer and better then normal lutetium grease, I use it on everything and get longer life out of my u-joints and front end suspension. Most transmission shop will test drive free of charge and scan the truck for DTC codes that sometimes will not show up in the check engine light, but mostly you do have an electrical problem so check all your fuses and wire harness from the ECM to the transmission. Good luck and keep me posted, be glad to help you get your truck running 100% again soon without some transmission shop getting you to replace the whole transmission for $2,300. If you are going to have the transmission service, "fluid and filter changed" Have them replace your boost valve. The boost valve is around $45.00, the boost valve controls the amount of transmission fluid pressure and low transmission fluid pressure will cause the transmission to fail. I replace mine every second transmission service and i have over 365,000 miles on mine. Keep up the good work friend.

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1 Answer

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Apr 16, 2009 | Chrysler Town and Country Cars & Trucks

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Or you could buy a module just for working the trans but I think they are expensive.

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1 Answer

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