SLOW DEFROST OF WINDSHIELD (INSTALL NEW DEFROSTER NOZZLE). Chevrolet Cavalier 1991

REVISION 12/02/93

THIS BULLETIN IS BEING REVISED TO CORRECT A PART NUMBER IN THE CORRECTION PROCEDURE. ------------------------------------------------------------------

SUBJECT: SLOW DEFROST OF WINDSHIELD (INSTALL NEW DEFROSTER ======= NOZZLE AND/OR NOZZLE SEAL)

MODELS: 1991-93 CHEVROLET CAVALIER ====== 1992-93 PONTIAC SUNBIRD

CONDITION:

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SOME OWNERS OF THE ABOVE VEHICLES MAY EXPRESS CONCERN ABOUT THE TIME IT TAKES THE DEFROSTER TO CLEAR THE WINDSHIELD. THIS CONDITION IS MOST PREVALENT UNDER VERY COLD CONDITIONS.

CAUSE:

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THE SEAL BETWEEN THE I/P AND THE HVAC MODULE MAY NOT BE THICK ENOUGH. THIS COULD ALLOW DEFROSTER AIR TO ESCAPE BELOW THE I/P PAD AND NOT REACH THE WINDSHIELD. CHEVROLET ONLY - ALSO, THE VANES IN THE DEFROSTER NOZZLE ASSEMBLY MAY NOT BE DIRECTING THE OPTIMUM SUPPLY OF AIR TO THE WINDSHIELD.

CORRECTION:

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PONTIAC ONLY:

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REPLACE THE CURRENT 12MM WINDSHIELD DEFROST NOZZLE AND AIR DISTRIBUTION SEAL WITH THE NEW 23MM SEAL, P/N 22594128.

AFFECTED VEHICLES:

1992 - S.O.P. TO E.O.P.

LORDSTOWN RAMOS 1993 - S.O.P. TO P7584932 PS835281

CHEVROLET ONLY:

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1. REPLACE DEFROSTER NOZZLE ASSEMBLY WITH P/N 22593234.

AFFECTED VEHICLES:

1991-1993 - S.O.P. TO E.O.P.

2. REPLACE THE CURRENT 12MM WINDSHIELD DEFROST NOZZLE AND AIR DISTRIBUTION SEAL WITH THE NEW 23MM SEAL, P/N 22594128.

AFFECTED VEHICLES:

1992 - S.O.P. TO E.O.P.

LORDSTOWN RAMOS 1993 - S.O.P. TO P7315356 PS835231

SERVICE INFORMATION:

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FOLLOW SERVICE PROCEDURES OUTLINED IN SECTION 8C OF THE APPROPRIATE SERVICE MANUAL. NOTE: THE I/P CARRIER DOES NOT NEED TO BE COMPLETELY REMOVED FROM THE VEHICLE TO GAIN ACCESS TO THE DEFROSTER NOZZLE OR THE DEFROSTER NOZZLE SEAL.

PARTS INFORMATION:

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PONTIAC ONLY:

SEAL, W/S DEFROST NOZZLE AND AIR DISTRIBUTION: P/N 22594128

CHEVROLET ONLY:

GRILLE, W/S DEFROST NOZZLE - LEFT: P/N 22593234 SEAL, W/S DEFROST NOZZLE AND AIR DISTRIBUTION: P/N 22594128

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

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LABOR OPERATION NUMBER: T3374 LABOR TIME: 2.2 HRS. - PONTIAC ONLY LABOR TIME: 2.6 HRS. - CHEVROLET ONLY TROUBLE CODE: 92

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.