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Old 02-17-2022, 10:14 AM   #6
Kateye_Kenzie
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Join Date: Feb 2022
Location: North Platte, NE
Posts: 7
Re: Decoding rear differential casting number

Quote:
Originally Posted by Bob B. View Post
Yes, check the SPID label, should be in the glove box. Problem is these trucks were available with many rear axles, GM, Eaton, Spicer, ect.. Good news is most medium truck axles were common and used in many makes of trucks, so parts availablilty is usually not a problem.
I feel kind of ridiculous asking but what's the SPID label? How would I read something like that? What does it look like? And why have I never heard of it before?
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2004 Chevrolet Silverado 2500 LB7 Duramax 6.6L
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1970 Chevy Vega Panel Wagon
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