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Rear Axle


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Hey guys, I have 02' Silverado 2500HD. It is 2wd with a 8.1L gas motor with Allison trans. I'm wanting to know what type of rearend it has? I've just had transmission work done, and now I'm wanting to either rebuild or buy new axle. I pull a 4 horse gooseneck trailer so I need to know what I got or what I need, thanks!

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Look at the pinion support and see if there is 6 bolts around the pinion. If there is, it is a 10.5 if there is no bolts it’s a 11.5. Being the 8.1 it is most likely the 11.5 and as far as rowing it’s the biggest one they installed in the trucks. You’ll be fine with it.


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