2004 Suburban 115K with the same problem. Kind of a hammering noise coming from the ds rear end. Comes and goes, slows down with decreased speed, stops when in neutral. Rear diff fluid was low but sound continued after topping it off. No leaks. Braking has no effect. Put up on jack stands in gear and after awhile the sound came and went as usual. Rear end is open diff. HELP!
Saturday, March 23rd, 2013 AT 2:47 PM