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

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

by in Moses Lake, WA on May 27, 2010
1 answer
ANSWER by on August 17, 2012
Chilton makes a good manual. Hope your differential has been fixed by now. But if not most likely the pinion bearing is bad.