1999 GMC Sierra V8 Four Wheel Drive Automatic 135000 miles
Most of the time (probably about 80% of the time) when I accelerate from a dead stop, I get a rapid knocking sound from under the hood. It also makes the noise continuously if I’m parked facing up a steep hill. If I rev the engin while not in gear, the is no noise.
have the same problem?
Wednesday, May 20th, 2009 AT 9:06 PM