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  1. #1

    Default Rear End codes for 96 Suburban 2500

    Hello what are the rear codes for the rear (and front) diff on this truck and where are they located in the VIN or glove box?
    99 Suburban 2500 4x4
    06 Explorer Ltd 4x4

  2. #2

    Default

    Quote Originally Posted by rowekmr View Post
    Hello what are the rear codes for the rear (and front) diff on this truck and where are they located in the VIN or glove box?
    Yes....In your Glove box is a series of the Letter's and Number's those are your RPO Codes.....you will be looking for one of the following for the gears,

    GU5.....3.23
    GU6.....3.42
    GT4.....3.73
    GT5.....4.10

    MIKE


    99"SILVERADO
    5.3 l 3.73 l G80
    BLACK BEAR CUSTOM TUNE
    SNUGTOP l COLORMATCH l KATZKIN










  3. #3

    Default

    Are you trying to determine the gear ratio, or what axles you have? With it being a 3/4 ton, you should have a GM 14-bolt axle in the rear. If it's got the hub sticking through the middle of the rim, it's the full-float version; if not, it's semi-float. The front is probably a GM 9.5 inch IFS axle if it's 4wd.
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 265K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

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