For 1990-2009 cars

# ABS INDICATOR LAMP ON, DTC 21, 22, 32 OR 33 SET

REVISION: 09/22/97

THIS BULLETIN IS BEING REVISED TO UPDATE APPLICABLE MODELS, YEARS AND PARTS INFORMATION. PLEASE DISCARD CORPORATE BULLETIN NUMBER 63-50-15 (SECTION 5 - BRAKES). ______________________________________________________________________

REVISION: 02/23/98

THIS BULLETIN IS BEING REVISED TO UPDATE PARTS AND APPLICABLE MODEL INFORMATION. PLEASE DISCARD CORPORATE BULLETIN NUMBER 63-50-15A - (SECTION 5 - BRAKES) ______________________________________________________________________

#### SUBJECT: ABS INDICATOR LAMP ON, DTC 21, 22, 32 OR 33 SET (INSTALL FRONT ABS WHEEL SPEED SENSOR WIRING HARNESS CONNECTOR KIT)

#### MODELS: 1992-97 BUICK SKYLARK 1991-96 CHEVROLET BERETTA, CORSICA 1992-97 CHEVROLET CAVALIER 1992-97 OLDSMOBILE ACHIEVA 1992-94 PONTIAC SUNBIRD 1995-97 PONTIAC SUNFIRE 1992-97 PONTIAC GRAND AM 1996-97 TOYOTA CAVALIER

#### CONDITION:

SOME OWNERS MAY COMMENT THAT THE ABS INDICATOR LAMP IS "ON". ALSO, MALFUNCTION DTC 21, 22, 32 OR 33 COULD SET.

#### CAUSE:

THE RIGHT FRONT AND LEFT FRONT ABS WHEEL SPEED SENSOR WIRING HARNESS COULD BE DAMAGED AND RESULT IN AN OPEN CIRCUIT. THE WIRING HARNESS MAY BE DAMAGED APPROXIMATELY 4 INCHES (10 CM) BACK FROM THE HARNESS CONNECTOR TO THE WHEEL SPEED SENSOR. THIS ALLOWS MOISTURE TO ENTER THE HARNESS CAUSING CORROSION AND RESULTING IN THE OPEN CIRCUIT.

#### CORRECTION:

A THOROUGH INSPECTION FOR CORROSION AND/OR DAMAGE SHOULD BE PERFORMED ON SUSPECT VEHICLES. IT MAY BE NECESSARY TO MOVE THE PROTECTIVE CONDUIT AWAY IN ORDER TO INSPECT THE WIRING PROPERLY. IF A FAILURE OCCURS AND DAMAGE IS FOUND, INSTALL THE FRONT ABS WHEEL SPEED SENSOR WIRING HARNESS CONNECTOR KIT(S). THE KIT INCLUDES INSTRUCTIONS, SPLICES, AND "PIGTAIL" CONNECTOR.

#### PARTS INFORMATION:

YEAR(S) MODEL(S) PART NUMBER DESCRIPTION ======= ======== =========== ===========

91-96 L-CAR 12140077 LEFT FRONT ABS WHEEL 92-97 N-CAR SPEED SENSOR HARNESS KIT

12140078 RIGHT FRONT ABS WHEEL SPEED SENSOR HARNESS KIT

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92-94 J-CAR 12128505 LEFT FRONT ABS WHEEL SPEED SENSOR HARNESS KIT

12128504 RIGHT FRONT ABS WHEEL SPEED SENSOR HARNESS KIT

-------------------------------------------------------------------- 95-97 J-CAR 12187091 RIGHT AND LEFT FRONT (INCLUDES ABS WHEEL SPEED SENSOR TOYOTA) HARNESS KIT

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

#### WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER DESCRIPTION LABOR TIME =============== =========== ==========

H2530 RIGHT SIDE USE PUBLISHED LABOR TIME.

H2531 LEFT SIDE USE PUBLISHED LABOR TIME.

FIGURES: 00 ATTACHMENTS: 00

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.

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