The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1988 - 1998 GMT400 Chevy & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-14-2014, 07:02 PM   #1
samtg555
Registered User
 
Join Date: May 2014
Location: Torrington, CT
Posts: 2
95 Chevy K2500 5.7 4l80e trannie problems

Hi, I've been having some problems with my transmission, the 4l80e. Our friend took the engine out, then we rebuilt it about a year and a half later. Which means, it sat for a little more than a year not installed in the truck. Then recently, my dad and I took it to our house in Connecticut from Vermont on a trailer to work out some bugs with the engine. Runs great now, but doesn't move well. When I put it in drive, and give it gas it doesn't seem to have any torque. It seems to be in a higher gear, or it might be slipping, I don't really know. Nothing changes when i manually select the gear, i.e. 1st, 2nd, 3rd. However, when put in reverse, it has all the power in the world, which I would think would rule out the toque converter. The wiring to the transmission is undamaged, as we checked the wires with an ohm meter. We took off the trans pan, replaced the filter, tested all the solenoids, put in brand new trannie fluid, got a new PCM and a new TPS, all to no avail. So we jacked up the back end. When we put it in drive, it seemed to start in a higher gear, like before. However, manually selecting the gears worked pretty well. Also, there were no computer codes, and the transmission worked perfectly prior to engine removal. We need this truck up and running in about 4 weeks, any and all help is greatly appreciated. Thanks in advance!
samtg555 is offline   Reply With Quote
Old 05-15-2014, 06:42 AM   #2
speedygonzales
Registered User
 
speedygonzales's Avatar
 
Join Date: Jan 2006
Location: Smithfield, VA
Posts: 1,501
Re: 95 Chevy K2500 5.7 4l80e trannie problems

sounds to me like someone did not seat the torque converter all the way when they put it back together. Remember click rotate and click again. Google it.
__________________
99 Z71 (98 body style)
Pride and joy
speedygonzales is offline   Reply With Quote
Old 05-15-2014, 11:10 AM   #3
samtg555
Registered User
 
Join Date: May 2014
Location: Torrington, CT
Posts: 2
Re: 95 Chevy K2500 5.7 4l80e trannie problems

Thanks for the reply.. and it has definite power in reverse, so would the torque converter only convert torque to reverse and not forward?

Last edited by samtg555; 05-15-2014 at 11:17 AM.
samtg555 is offline   Reply With Quote
Reply

Bookmarks

Tags
4l80e, 5.7, chevy, k2500, transmission


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:27 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com