Hi I just bought a 99 yukon denali with 150,000 miles on it, got it at a very good price. When I test drove it I noticed a grinding noise up front, so once I purched it frist thing I did was replace front rotors and pads, tthe noise is still there. So I had someone look at it and he ssid my right side hub asembly was bad, so I replaced it. The noise was still there plus now I hear a grinding in the rear, I heard befor that noise can travel from the rear. So I replaced the rear brakes, well my breaks work great now but the noise is still there. It is a grinding noise from up front, it seems to be when I let off the gas to coast it grinds, or when I hit the breaks it grinds and when I put it in four wheel drive the noise gets louder and is full time. Someone told me it might be the front differential. Please help me. Thank you!
Tuesday, January 10th, 2012 AT 4:02 AM