Question about 1999 Chevrolet K2500

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How do I find out what the gear ratio is in my '99 k2500 truck

How do I find out what the gear ratio is in my 1999 chevy k2500 crew cab 4x4 p/u truck?

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Look on the glove box door. There should be a label with the a bunch of codes:

GT4 = 3.73
GT5 = 4.10
GU4 = 3.08

G80 means it has limited slip

If none of those match, Google GM RPO codes

Posted on Mar 02, 2017

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Call dealer with vin number, they can tell you what it was built with.

Posted on Jul 30, 2009


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