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gt4, gt5, gt8 spec location 1990 V15

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by skelly1, Nov 27, 2002.

  1. skelly1

    skelly1 1/2 ton status

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    Where do I find the differential number gt# to be able to tell what gear ratio you have??
     
  2. heavy4x4

    heavy4x4 1/2 ton status

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    Open up your glove-box. There will be a lot of RPO codes printed on a piece of paper that's glued to the inside of the flip-down door. Just find the one you're looking for.
     
  3. skelly1

    skelly1 1/2 ton status

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    Thanks, there's a GT4 listed which apparently means that I have 3:73 gears.
     

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