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 99-06 GMT800 Chevy and GMC Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 07-13-2016, 03:28 PM   #1
Mr-Jack
Beer Drink'n Knuckle Dragger
 
Mr-Jack's Avatar
 
Join Date: Mar 2010
Location: Eatonville, WA
Posts: 493
Transmission is jacked...need suggestions

So this is on my 01' Chevy 2500 HD 4x4 6.0 w/4L80E. (Lifted on 35's w/4.10s...I know...need lower gears)

I mainly use the truck for hauling hay and every now and then I pull a gooseneck trailer with it.

My wife drove up over the pass last weekend and told me that the transmission fluid hot light came on 2 times on the way out there while pulling the gooseneck over the pass loaded w/2 horses. (It's around 12k lbs Loaded) She pulled over and let it cool down and proceeded on without any further problems.

On her way home this last Sunday, she made it about 5 miles from the house and the RPMs maxed out going up the hill to my road (2-3% grade) and she could no longer move the truck, and the transmission fluid hot light came back on. Had to tow the truck and trailer home with a logging truck.

The next day after work, I pull the dipstick and the tranny fluid is black and smells burnt. I started the truck and shifted through the gears (trailer was disconnected at this point). In drive, I would rev to about 3500 RPMs and it would barely move after a few seconds. 1st/2nd/3rd/Rev same thing. I put it in 4wd and the truck moved better, but still acted gutless.

My wife said that she heard a winding noise a few times while driving on level ground but it went away after about 30 seconds...this happened a few times.

My question is, what am I looking at hear? Does this sound like just the transmission is jacked, or could this be a culmination of the trans and transfer case? (Transfer cases switches between 2wd 4hi 4lo no problem.)

If it is a transmission, is there a kit that I could buy to rebuild this thing to where it can handle towing 12k lbs over the pass?

Thanks,

Jack
__________________
GOD BLESS MY BROTHERS & SISTERS THAT SERVE WITH US
- 67 GMC Long-Wide 350/SM420
My BACON Wrapped Meatloaf Recipe
Mr-Jack is offline   Reply With Quote
Reply

Bookmarks

Tags
transfer case, transmission cooler, transmission grind, transmission rebuild

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 02:49 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com