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 01-17-2025, 01:29 PM   #1
Jeepwm69
Registered User
 
Join Date: Jan 2009
Location: Arkansas
Posts: 689
1995 GMC transmission went south yesterday

Was driving home from the city yesterday with a new water heater, and noticed the truck started revving a little and didn't seem to pull as well. Progressively got worse and worse, and I knew the transmission was going out. Checked fluid and it was full but burned smelling and dark. Ended up having to get towed in the last 20 miles to the house.

So, I know the 95 is kind of a transition year between the 700R4 and the 460 transmissions, so will have this one rebuilt. One place has quoted me $1250, and waiting to hear back from the other. Not a lot of reputable places in the boonies where I live, but the places I've asked have been recommended by shop owners/racers.

Truck only shows 70K on the odo, hardly any towing since my grandfather bought it 20 years ago with 35K on the odo. Added a transmission cooler several years ago, but fluid hadn't been changed unless it was done prior to the truck coming into the family. I had a load of Mobil 1 ATF with plans to change it when the weather got nice this spring, but guess I waited too long.

If I have this bench built what is involved with getting it back in the truck? I'm a manual transmission guy so not much to screw up there other than getting the clutch play right. I assume I'd have to adjust the shift cable possibly, or will this thing bolt right back in?
Jeepwm69 is offline   Reply With Quote
Old 01-17-2025, 03:28 PM   #2
Accelo
Senior Member
 
Accelo's Avatar
 
Join Date: Mar 2015
Location: washington
Posts: 2,314
Re: 1995 GMC transmission went south yesterday

1993 and up are 4L60E's
Likely 3rd gear went out. This is the weakest point in this transmission.
$1250 would be a bargain where I live.

It takes a lot of special tooling to replace the bushings, specialized snap-ring pliers, etc.
I recommend getting it done as it will be weeks faster.
If you purchase a used one be careful as the many differences between years need to be considered.
Accelo is offline   Reply With Quote
Old 01-17-2025, 11:37 PM   #3
Myself
Registered User
 
Join Date: Oct 2005
Location: Northern Arkansas
Posts: 1,149
Re: 1995 GMC transmission went south yesterday

Actually.....MOST of that trans can be rebuilt with only one special tool which you can build with threaded rod and c channel. I've built SEVERAL 700r4/4l60 trans. USUALLY when you lose drive but still have first, second, and reverse....the 3-4 clutch pack burned up. It's very common on those. https://transpartswarehouse.com/0577...xoC9PYQAvD_BwE
The special tool you need looks like this......https://www.amazon.com/Bonbo-T-0150-...CTCKPKTCA&th=1 I made mine with threaded rod so I could put the threads THROUGH the assembly and tighten a piece of flat steel on the back side to compress the springs. I can use mine for ALL the sprung assemblies that way. It's not that difficult to replace the 3-4 clutches. You have to drop the pan. Pull the 2-4 band servo/piston. Pull the front pump. Use a magnet to pull out the 2-4 band retaining pin. Pull out the band. Then grab the whole forward assembly and pull it out of the trans.
https://www.youtube.com/watch?v=gSXE-GvWXhA


All that being said.....$1250 is a BARGAIN if it's getting built right.
Myself is offline   Reply With Quote
Old Yesterday, 09:46 AM   #4
D.B
Registered User
 
D.B's Avatar
 
Join Date: Jul 2021
Location: Keller, Texas
Posts: 571
Re: 1995 GMC transmission went south yesterday

Have your converter gone through. It will need flushed out or better yet opened up and cleaned. What trash and debris that was in your transmission is now in your converter. Also, thoroughly clean your transmission lines and transmission coolers. Auto Parts stores sell aerosol cleaners just for this purpose that can be attached to the lines and fittings. I would use several cans, you can never be too clean.
__________________
Darrell



1972 Cheyenne Super C20 (My Fun Drive)
2000 S10 Xtreme (My Drag Truck)
D.B is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 09:19 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com