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Old 02-17-2015, 09:35 PM   #3
Dustinmk4
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Join Date: Aug 2010
Location: varies
Posts: 91
Re: Mystery sound..........help!

Quote:
Originally Posted by ChevyTech View Post
If the pinion bearings in the differential are real bad it could be making the noise you hear.

Get someone to put the truck up on a hoist to listen to it with it running in gear.
That thought had crossed my mind but of course I didn't think about it when we had it on the lift doing brakes I'll check it out.
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1996 K3500 CCLB. 7.4L auto. 140K. Small lift and exhaust with more to come.
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