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Front Differential ID

Discussion in 'Technical Specifications' started by 1990 K1500, Feb 12, 2017.

  1. 1990 K1500

    1990 K1500 I'm NEW... What now?

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    Feb 10, 2017
    Northeast Alabama
    I'm sure this has been discussed on here a lot but I'm new to this site. I have a 1990 Chevy K1500 and I'm in the process of buying new seals and bearings. Where do I look on the truck to find the ring gear size ?.....I know the ratio is 3:42, but don't know the size. The sticker in the glove box is worn and not readable. .......The numbers on the case are : ZGS G285 202.....Those are along the edge of the case where it comes apart. ...These are on the side of the case near one of the mounting bushings : GM ADC-5 15572991.....Any help would be appreciated. ...

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