Body - Windnoise Diagnosis and Corrections: Overview

Number:
93-103-10

Section:
10

Date:
FEB. 1993

Corporate Bulletin No.:
331005

ASE No.:
B1



Subject:
WINDNOISE


Model and Year:
1991-93 CAPRICE



Customer comments regarding windnoise 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 windnoise can best be described as air leaking from inside of the vehicle outward while traveling at highway speeds. Turbulence or windrush 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 windnoise/turbulence on the vehicle.

The recommended materials to be used with the following procedures are:

3M AUTO BEDDING +GLAZING PART NUMBER 08509
3M ULTROPRO AUTO BODY SEALANT (CLEAR) PART NUMBER 08302
3M STRIP CAULK PART NUMBER 08578
AMERICAN SURE SEAL BEDDING COMPOUND PART NUMBER CGB
AMERICAN SURE SEAL STRIP CAULK (BLACK) PART NUMBER BSC
KENT AUTO BEDDING AND GLAZING COMPOUND PART NUMBER 10255
GM URETHANE ADHESIVE KIT PART NUMBER 12345633
GM GOODWRENCH RTV SILICONE RUBBER PART NUMBER 12345336
KENT TRACING POWDER PART NUMBER 20065

3M and AMERICAN SURE SEAL INC. can be purchased locally.

KENT PRODUCTS distribution can be obtained by calling 1-800-654-6333.

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