GM Service Manual Online
For 1990-2009 cars only

A clunk noise that occurs while accelerating during turning may be caused by wear and/or damage to the inboard and the outboard joints in combination. Carefully inspect the joint seals (boots) for cuts, tears or other damage. Joint seals that are damaged may allow lubricant leakage and the entry of foreign materials and contaminates. The loss of lubricant and/or the presence of contaminates can cause damage to the internal components of the joints.

If the seals (boots) are not damaged, remove the wheel drive shaft from the vehicle and rotate the joints in a circular motion. Do not allow the tripot spider to become disengaged from the housing (race). The movement of the joints should be smooth and even. If the joints exhibit any binding or inhibited movement, the joint requires replacement.