RUBBING/GRINDING NOISE FROM REAR BRAKES

RUBBING/GRINDING NOISE FROM REAR BRAKES (NEW BRAKE SHOE ASSEMBLIES WITH NEW LINING MATERIAL

VEHICLES AFFECTED: 1985-88 M-CAR ------------------

Some of the described vehicles may exhibit a grinding or rubbing noise from the rear brakes on application after an extended period of non-use, approximately 8 hours or more. This condition may be aggravated by high humidity, condensation or rain during the park period.

A new lining material has been developed which eliminates the described noise condition. This lining material was introduced on late 1988 model year vehicles beginning with the following VIN serial numbers: Model Year Code J.

USA Chev. GM Can. Chev. GM Can. Pontiac --------- ------------- --------------- 3 Door (VIN body code 2) 769929 769487 769606 "Metro" 3 Dr. (VIN Carline Code MS) 769666 N/A N/A 5 Door (VIN Body Code 6) 769691 769686 770010 "Turbo" (VIN Engine Code 2) N/A 770041 770034

For vehicles built before these VIN numbers that exhibit the described condition, new style brake shoe assemblies should be installed in place of the existing parts.

Following service manual procedures remove and replace four rear brake shoes using parts obtained in kit, P/N 96061639, shoe set, brake. This kit provides parts for one wheel only, 2 kits will be required for each vehicle.

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.