Document ID# 2037928 (updated to ID:2257485)
Subject: Pop Or Creak Noise From Rear Of Vehicle Behind The Seats - keywords body crack creak flex frame link missing noise pop rear suspension turn weld #PIC4678 - (11/12/2007)
Models: 2005-2010 Chevrolet Corvette
Condition/Concern:
Some customers may comment of a creak type noise from behind the seating area. This noise seems to be more induced as the body of the vehicle flexes. An example of this would be turning into a parking lot were the entrance has an incline.
Recommendation/Instructions:
Note: Prior to performing the procedure below, be certain that the noise is not related to any suspension components. One common area of noise are the rear stabilizer links. Isolate the rear stabilizer links and see if the noise has been eliminated.
Note: Prior to performing the procedure below, be certain that the noise is not related to any suspension components or the panel behind the seat.
Common areas of noise can be the rear stabilizer links or "oil canning" on the panel behind the seats. Technicians should isolate the rear body panel behind the driver's and or passenfer's seat to determined if the noisse can be reduced.
If the noise is corrected the panel is "oil canning" and transmitting the noise.
Oil can noise can be reduced by adding a small crease in the metal to reduce panel movment or adding several dimples to add rigidity to the panel. If the noise is not suspension related or the body panel, it may be necessary to continue with this PI.
Remove the fuel tanks and inspect the frame on both the left and right side of the vehicle.
If a void is found, it will be necessary to re-weld this area.
Important: When MIG welding, it will be necessary to use all safety precautions since the area of concern is near the fuel tank(s).
Grind this area clean were welding is needed.
MIG weld area utilizing all safety precautions.
After welding is completed, coat area with rust inhibitor to prevent future corrosion.
Re-evaluate vehicle.
Caution: To avoid personal injury when exposed to welding flashes or to galvanized (Zinc Oxide) metal toxic fumes while grinding/cutting on any type of metal or sheet molded compound, you must work in a properly ventilated area, wearing an approved respirator, eye protection , earplugs, welding gloves, and protective clothing. This information was taken from SI Document 824779.
I noticed a new noise behind the seat area on my last trip. I planned on looking at it the next time I had it up on ramps. I sure hope this is not the problem.