Results 1 to 2 of 2

Thread: Tranny

  1. #1
    Join Date
    Feb 2014
    Location
    Us Minnesota palisade
    Posts
    4

    Default Tranny

    I have a 1982 with a 6.2 diesel. My problem is the tranny doesn’t seem to be shifting into 3rd gear. Any help would be greatly appreciated!

  2. #2
    Join Date
    Apr 2001
    Location
    CA
    Posts
    13,568

    Default

    How's the fluid level and condition. Low and/or due for service. Dark, stinky fluid?

    Which tranny?

    If it's a TH400 (HD 3/4 ton or 1 ton), it could be vacuum related. TPV (vacuum valve on the IP), modulator (on the tranny), vacuum pump fail, vacuum plumbing fail. If not, probably due for overhaul.

    If it's a TH700R4 (1/2 ton or LD 3/4 ton), the list of possibilities is long, but almost always leads to overhaul.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

Similar Threads

  1. Is Mobil 1 Syn Tranny fluid ok in '06 tranny
    By upsguy in forum 2500HD/3500 HD Trucks & Drivetrain
    Replies: 5
    Last Post: 02-11-2010, 14:05
  2. tranny
    By aquaman0001 in forum 6.5L Turbo Diesel - Tech Support - Troubleshooting - Performance
    Replies: 3
    Last Post: 10-05-2007, 17:20
  3. tranny?
    By bonez02 in forum 1982-2000 C/K Truck & SUV Chassis & Drivetrain
    Replies: 2
    Last Post: 05-24-2007, 07:59
  4. B D tranny on its way
    By king D in forum 2500HD/3500 HD Trucks & Drivetrain
    Replies: 3
    Last Post: 06-03-2003, 08:32
  5. New Tranny?
    By Burner in forum Duramax 6600
    Replies: 2
    Last Post: 11-06-2002, 07:19

Posting Permissions

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