Diff oil under truck

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Sep 25, 2006 | 12:19 AM

6.0caddy

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From: sacramento

Diff oil under truck

I just looked under my truck and saw oil all round under my truck near the rear diff. Do i need to rebuild it with new seals. Other question what gears do i have. Its a 99 chevy silverado ext cab. 373 ?

Sep 25, 2006 | 12:20 AM

RoosterMcCandles

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Could just be a bad gasket too...

Sep 25, 2006 | 07:01 PM

Mort

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Look at the RPO codes in your glove box for your diff code.
GT4 = 3.73
GT5 = 4.10
GU4 = 3.08
GU6 = 3.42
GH0 = 3.54

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