Noise Location

This bulletin is being revised to change the Labor Operation and time for step XV. - Road Noise From Lower Rocker Area.

Customer comments regarding wind noise may be addressed by using the procedures on the individual items listed in this bulletin. Proper diagnosis may be made with a variety of tools and methods including stethoscopes, dust guns, sonic instruments, visual inspections, dollar bill method, etc. It is important to remember that wind noise can best be described as air leaking from inside of the vehicle outward while traveling at highway speeds. Turbulence or wind rush is best described as air passing over and around body openings and moldings.

Prior to any repairs the front and rear door auxiliary weatherstrips and door primary opening weatherstrips should be visually inspected for proper gaps, fits, weatherstrip contact, and sealing. The vehicle should also be road tested to determine location and degree of wind noise/turbulence on the vehicle.





Refer to Service bulletin T-89-46 and Cadillac Roundtable Video RT92-2 for basic Wind Noise Diagnostic Testing Procedures. The recommended materials to be used are illustrated.

3M and American Sure Seal, Inc. may be purchased locally.

Kent Products distribution may be obtained by calling 1-800-654-6333.

We believe these sources and their equipment to be reliable. There may be additional manufacturers of such equipment, however, General Motors does not endorse, indicate any preference for, or assume any responsibility for the products or equipment from these firms or for any such items which may be available from other sources.