GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 5 of 5

Thread: Tranny slipping

  1. #1

    Default Tranny slipping

    Hey guys. I have a '91 GMC Sonoma 2wd Extd. cab with the 4.3L 262. The transmission is a automatic but I'm not sure of which one. It has been sitting for awhile and when I got it running yesturday the trans started slipping. It's bad when I go around corners, the rpm's jump and the trans dosen't do anything. Also when it's in park it won't go into reverse right away. It didn't do this before it sat for about a year. Is this something that could be fixed by a transmission service kit from a local auto parts store, or dose this sound like something more serious? The fluid level looks good and the fluid is the right consistency and color. Please help me out on this...thanks for your time.

  2. #2

    Default

    cheap fix try running Trans Tune through it
    just take out a quart of trans fluid and add the quart of trans tune run for 500 miles and change out all fluid and filter

    2003 Z71 Silverado LS
    Access roll up cover
    Bed Rails
    Billet Grill insert
    Bed Rug
    CB with PA system
    Waiting to be installed
    Two 8in RF HX2 punch( would have 12s but they got stolen)

  3. #3

    Default

    I'd agree with Z71 GUY, sounds like the trans built up sludge and varnish while it was sitting.
    You did check the fluid level right?

  4. #4

    Default

    Quote Originally Posted by tbplus10 View Post
    I'd agree with Z71 GUY, sounds like the trans built up sludge and varnish while it was sitting.
    You did check the fluid level right?
    Yes, I checked the fluid level and it looks good... both the amount and the color.

  5. #5

    Default

    I am a fan of Trans-X. They sell it at autozones and places like that.
    Dan
    1999 GMC Sierra 2500 350 vortec
    1967 Jeep M725 ambulance 230 tornado
    1990 Cherokee Limited- 3 inch lift on 33's
    ...and every one of em has issues

    If you have any questions or problems don't hesitate to send me or any other GMTC moderators a PM

Similar Threads

  1. Signs of a Slipping Tranny
    By Stealth in forum GM Powertrain
    Replies: 7
    Last Post: 06-13-2010, 03:47 PM
  2. Advise on rear slipping....
    By Silverado 1999 4.3 in forum General Chevy & GM Tech Questions
    Replies: 1
    Last Post: 06-09-2010, 12:13 PM
  3. Transmission slipping and I need your help please
    By b_burdine in forum GM Powertrain
    Replies: 6
    Last Post: 01-02-2010, 02:44 AM
  4. Tranny Slipping? Maybe???
    By goclmbmnt in forum GM Powertrain
    Replies: 1
    Last Post: 06-09-2009, 09:02 AM
  5. transmission slipping
    By foxbmx in forum GM Powertrain
    Replies: 3
    Last Post: 03-18-2009, 10:29 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •