BUZZING SOUND WHEN REAR DEFOGGER IS 'ON'. Pontiac Sunbird 1991

SUBJECT: BUZZING SOUND WHEN REAR DEFOGGER IS "ON" (REPLACE TIMER RELAY, BREAKER AND TERMINAL(S) USING KIT)

MODELS: 1989-94 PONTIAC SUNBIRD

CONDITION:

SOME OWNERS MAY COMMENT ON A BUZZING SOUND WHEN THE REAR DEFOGGER IS "ON".

CAUSE:

THE CIRCUIT BREAKER MAY CAUSE THE REAR DEFOGGER TIMER RELAY TO CYCLE "ON" AND "OFF" (I.E. BUZZ). THIS MAY CAUSE A THERMAL CONDITION WHICH WILL ANNEAL THE CIRCUIT BREAKER FUSE BLOCK TERMINALS.

CORRECTION:

USE KIT, P/N 22638225, TO CORRECT THE CONDITION.

PARTS AVAILABILITY:

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER: R2162 LABOR TIME: .4 HR. (NO REAR DEFOG TIMER RELAY TERMINALS NEEDED) LABOR TIME: .5 HR. (ONE REAR DEFOG TIME RELAY TERMINAL NEEDED) LABOR TIME: .6 HR. (ALL REAR DEFOG TIMER RELAY TERMINALS NEEDED)

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.