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2005 Silverado 1500 - hard knocking in driveline (u-joint?)

Old May 25, 2016 | 7:46 PM
  #1  
ricky891's Avatar
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From: Texas
Default 2005 Silverado 1500 - Hard Knocking in Rear Driveline (u-joint?)

I have a hard knocking in the rear driveline, seems to be either driveshaft, rear axle, or possible drum brakes...

Only happens under heavy load (towing or climbing a hill) at very low speads 0-15mph.

Not feeling any vibration and everything is totally normal under normal loads. My best guess is u-joints... would you agree?

Here is a video of the noise:

Last edited by ricky891; May 25, 2016 at 7:58 PM.
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Old May 26, 2016 | 12:57 AM
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hicksvilleshick's Avatar
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From: Hicksville Ks
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U joints tend to squeak rather or clunk, I couldn't rule out u joints there but it didn't sound like them, but with it being only under heavy load it points to them.

U joints are fairly cheap and easy, if it were me is throw a set at it and see if that resolves the noise.

The only other thing I could suggest to check would be the parking brake, maybe the shoe has broken or something, but you'd think it'd make noise all the time.
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