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!
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Tuesday, January 10th, 2012 AT 4:02 AM