#PIT3118M: Pop/Clunk/Click Noise On Right Or Left Turns Felt In The Floor - keywords body bolt insulator mount pan suspension - (Nov 28, 2006)
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Owners may comment of a pop, clunk or thump type noise when turning left or right. This noise may be heard and/or felt at either the driver or passenger floor pan area.
Recommendation/Instructions:
Install insulator part number 15899719 at the right and left side #1 body mounts. The insulator should be installed between the upper portion of the body mount and the frame bracket. The #1 mount is the mount located just under the A-pillar. Clean the threads of the bolt with denatured alcohol or equivalent and allow to dry. Apply Threadlocker, GM P/N 12345493 (In Canada use P/N 10953488). Install the body mount bolts and tighten to specification.
Important: While the body mount is removed, check the underbody area that interfaces with the top of the body mount for excess build-up of E-Coat Primer or other foreign material. If the surface is not smooth use a 90 degree die grinder, or equivalent to remove the excessive build-up. Apply an anti-corrosion protection, P/N 12378398 (in Canada, 10952414), to the bare surface as necessary to prevent rusting.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
