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GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

Bearing failure

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Old 12-30-2011, 01:02 AM
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that's an old bearing...interesting that the steering knuckle you got came with the hub assembly, the used parts houses i've dealt with usually send the just the knuckle, either way i never assume used wear parts are good at all...lucky no more damage occurred!
Old 12-30-2011, 02:46 AM
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Originally Posted by 1FastBrick
The 4x4 hubs on the 99-07 classic are not the same as a 2wd hub. They use the axle stub to keep the assemby together. Other years and other vehicals Maybe the same or similar in appearnce but on these they are not. Every time I have seen some one put a 4x4 hub on a 2WD it does basically the same thing.

Last tech I saw do this barely made it out of the drive way onto a busy street when this happened.
Originally Posted by Robert91RS
The GMT800 hubs have converged to be the same. Early 2wd hubs and 4wd hubs were different but should all be serviced by the same part# now.
Originally Posted by 1FastBrick
well unfortunitally wether it be old stock, aftermarket, or what ever they are not!!! I have seen this happen sevral times.
Both of you are correct, depending on the manufacturer of the bearing/hub assembly. If you're using a NEW part, then whoever is selling the part can tell you. However, if it is a USED part, you really have no way of knowing, so you should assume that they are different and NOT interchangable.

Luckily(for the driver of the truck) the damage was minimal, and nobody got hurt!
Old 12-30-2011, 02:53 AM
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BTW, my parts supplier(Carquest) lists 2 different part numbers. 515036 for 4x4, and 515054 for 2 wheel drive. NAPA shows 2 different part numbers as well. But I have seen applications where they do actually use the same part numbers, maybe it was GM? I don't remember right now...
Old 12-30-2011, 07:01 AM
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I have always been told since these trucks came out, that the bearings are not inter changeable from 4 to 2 wheel drive. But that’s what happens when you work for know it alls. And we have to use what the insurance wants to stay on the programs. You call a reputable LKQ parts vendor, and one would assume that there parts catalog would tell them that it wouldn't work.
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