GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 3 of 3
  1. #1
    Join Date
    Dec 2012
    San Antonio,Tx
    Blog Entries

    Question What transmission do i have????

    i have a 1990 chevy cheyenne 262 v6 4.3ltr, tbi, it is a manual transmission, has GM8680834 stamped on it (hope this helps someone help me) but i need to know exactly what kind it is, cuz i am thinking of trying to switch it to automatic.... any info would be nice, n thanx
    Last edited by naphidim; 12-24-2012 at 06:29 PM.

  2. #2


    My neighbor did the reverse a few years back. He took the automatic 200R4 out of his 87 Monte Carlo and put a Ford 5 speed in. he had to make a few trips to some junk yards and Chevrolet @Carlisle got the pedals and the linkage.

    In your case it would be the reverse, I'd go to a few breaker yards, or hit some of the auction sites and get your automatic pedals and a gear indicator, I'm willing to bet your dash is already has the space for the indicator in it. The rest is just finding a column and a good 700R4 transmission for it.
    Last edited by JTward1; 01-03-2013 at 11:39 AM.

  3. #3

    mfleetwood's Avatar
    Join Date
    Jul 2010
    Denver, CO
    Blog Entries


    I'm not sure if your still looking for help on this topic, but I moved your thread here as it will garner more responses.

    Good luck!

    Mike (Denver, CO) - 2008 Sierra 1500 Z71 SLE 5.3L 4WD

    SUSPENSION: Rancho 4" Suspension Lift; Rancho RS9000XL Shocks; Rancho Skid Plates; Rancho MyRide Wireless Shock Controller;
    BFG All Terrain KO 315/70/17
    DRIVE TRAIN: 4.56 Gears; Detroit TrueTrac Differential; True Cool 40k Transmission Cooler
    PERFORMANCE: DiableSport Predator Tuner; Custom Tuned by Diablew; Magnaflow Exhaust; AFE Cold Air Intake
    ELECTRONICS: Kenwood DNX6180 Touchscreen; Subthump box w/10" Kicker; Driver Information Center (DIC); Rear View Camera
    ACCESSORIES: Westin Brush/Grill Gaurd; Westin Nerf Bars; Truxedo Tonneau; 20% Tint; Tow Mirrors w/Heat & Signals

Similar Threads

  1. transmission
    By jdaggies84 in forum GM Powertrain
    Replies: 0
    Last: 07-17-2011, 12:29 PM
  2. Transmission Cooler? Need to drain out a quart of Transmission Fluid
    By Fitzi722 in forum General Chevy & GM Tech Questions
    Replies: 7
    Last: 06-30-2011, 10:38 PM
  3. What kind of transmission do I have? Transmission check.
    By groceryman in forum Maintenance & Upkeep
    Replies: 3
    Last: 10-18-2010, 07:41 PM
  4. Replies: 0
    Last: 06-08-2007, 11:53 AM
  5. Replies: 0
    Last: 06-08-2007, 09:20 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