Document ID# 2048898

Subject: Squeak Noise From Under Vehicle During Right Hand Turns - keywords body bounce dual exhaust floor hand hanger hook itch loop noise RH right section shake spring support turn #PIC4743 - (01/15/2008)

Models: 2008 Chevrolet Corvette

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

Some customers may comment of a squeak noise from under the vehicle. Noise may occur on right hand turns and parking lot maneuvers.
This noise may be the result of the exhaust hanger springs that support the dual sections of exhaust squeaking under the vehicle.
These springs are a cylindrical type spring with two bars that run down the center of the springs coil. These bars may contact the inner coils of the spring and induce a squeak noise.

Recommendation/Instructions:
Inspect the exhaust springs for witness marks within the spring itself and where it connects to the exhaust.

After the exhaust has cooled, jouncing or shaking the exhaust by hand can induce this noise on a hoist to help isolate the noise. Use an anti-seize lubricant on all witness marks or were noise is generating and re-evaluate.
If there was no change to the noise or the vehicle has a repeat concern, replace the springs as necessary.