For 1990-2009 cars

# REAR BRAKE SQUAWK & LOW SPEED ABS CYCLING (REPL. REAR BRAKE)

REVISED: 06/28/94

THIS BULLETIN IS BEING REVISED TO UPDATE THE CORRECTION PROCEDURE AND WARRANTY INFORMATION. PLEASE DISCARD PREVIOUS DIVISIONAL PUBLICATION NUMBERS LISTED BELOW:

BUICK 93-5-3 CHEVROLET 93-65-5 GM OF CANADA 93-5-105 OLDSMOBILE 93-T-29 PONTIAC 93-5-5 ----------------------------------------------------------------------

#### SUBJECT: REAR BRAKE SQUAWK AND LOW SPEED ABS CYCLING WHEN COMING TO A COMPLETE STOP (REPLACE REAR BRAKE LININGS/DRUMS)

#### MODELS: 1992-93 BUICK SKYLARK 1992-93 CHEVROLET CAVALIER AND CORSICA/BERETTA 1992-93 OLDSMOBILE ACHIEVA 1992-93 PONTIAC GRAND AM AND SUNBIRD

#### CONDITION:

SOME OWNERS MAY COMMENT ON A LOW SPEED ABS CYCLING AND A SQUAWK FROM THE REAR BRAKES WHEN COMING TO A COMPLETE STOP. IF THIS CONDITION EXISTS, SOME VEHICLES MAY EXHIBIT CHAFED OR CRACKED BRAKE LININGS.

#### CAUSE:

HEAVY DUTY BRAKE CYCLING MAY CREATE ADDED HEAT WHICH COULD RESULT IN SOME DETERIORATION OF THE BRAKE LININGS. THIS DETERIORATION MAY POLISH THE DRUMS AND INCREASE THE SYMPTOMS OF THIS CONDITION.

#### CORRECTION:

VEHICLES THAT EXPERIENCE ANY OR ALL OF THE ABOVE CONDITIONS SHOULD REPLACE THE REAR BRAKE LININGS WITH CURRENT PRODUCTION P/N 12321412, SERVICE BRAKE LINING. ALSO, THE REAR DRUMS WILL NEED TO BE REPLACED WITH P/N 18020612 WHICH HAS BEEN RELEASED FOR 1994 AND 1995 CURRENT PRODUCTION.

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

#### WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER: H0257 LABOR TIME: USE PUBLISHED LABOR TIME

FIGURES: 0

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.

COPYRIGHT 1994 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.