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2002 Chevy Express Rear Differential Noise

Old February 11th, 2019, 8:25 AM
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2500, 155", 157K

Has the 2 piece driveshaft

From the look of the cover, it looks like a 9.5/14 bolt.

As I said, I don't know jack about differentials. However, I think what you are talking about only exists on some 99-2000 express with 10.5/14 bolt. I could obviously be completely wrong.
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Old February 11th, 2019, 10:28 AM
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9.5" semi-float 14bolt would require full disassembly for pinion bearing replacement, I think your mechanic is short on labor. If you have 17yrs and 157k miles on original u-joints and center driveshaft carrier you got all the moneys worth from them..
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Old February 11th, 2019, 9:31 PM
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Without being an expert, the only sure way to ID the diff is to have a dealer decode the VIN. A simple decoder like the one in the tool bar (above) doesn't give enough detail.
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