[JaVeRo]

Take another driver with you and find a speed bump in an empty parking lot somewhere. Stand beside the truck while the other driver goes forward and backward across the bump. If it is something in the control arms, you should be able to find it.

GM makes some little bitty tiny washers to take the slack out of the hood hinges. I have read about many that have looked and replaced parts trying to fix a noise only to find it is the hood hinge and a $3 part. Standing in front facing the motor, raise the hood about 6 inches and pull it left and right. If your hood hinges are bad you will hear it. Post back and I will find the part no. and the website that explains the problem.

James