2001 GMC Sierra 2500 HD Q&A

2001 GMC Sierra 2500 HD Question: getting slight winning noise in cruse, stops in coast.

rear end winning noise in cruse, noise stops when in coast. Oil just replaced at 70k no metal found. also what is a good repair manuel? Thanks Jack -
Answer 1
Chilton makes a good manual. Hope your differential has been fixed by now. But if not most likely the pinion bearing is bad. -