For 1990-2009 cars

# REAR BRAKE NOISE CORRECTION INFORMATION

1983 LIMOUSINES MAY EXPERIENCE A CONDITION OF A METALLIC SCRAPING NOISE FROM THE REAR OF THE VEHICLE, ESPECIALLY DURING A RIGHT HAND TURN. THIS CONDITION MAY BE CAUSED BY THE LEFT HAND BRAKE DRUM CON- TACTING THE STATIONARY BACKING PLATE. IF YOU SUSPECT THE ABOVE, REMOVE THE BRAKE DRUM AND CHECK FOR EVIDENCE ON THE DRUM. IF INTERFERENCE IS EVIDENT, MOUNT THE DRUM IN A BRAKE LATHE AND MACHINE TO REMOVE .040" FROM SECTION A AND .10" AT A DEPTH OF .17" FROM SECTION B AS SHOWN IN FIGURE 2. FOR WARRANTY PURPOSES USE OPERATION NO. H0201 AT .7 HOUR. (ILLUSTRATION)

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.