For 1990-2009 cars

# WIPER BLADE CHATTER ( CORRECT PART USAGE )

REVISION: 06/09/95

THIS BULLETIN IS BEING REVISED TO UPDATE NEW PART INFORMATION, ADD VIN BREAKPOINTS AND 1995 MODEL YEAR. ALSO, A NEW AIR INLET GRILLE HAS BEEN RELEASED. PLEASE DISCARD CORPORATE BULLETIN NUMBER 43-82-06 (SECTION 8 - CHASSIS/BODY ELECTRICAL). ----------------------------------------------------------------------

#### SUBJECT: WIPER BLADE CHATTER (CORRECT PART USAGES)

#### MODELS: 1991-1995 - BUICK ROADMASTER 1993-1995 - CADILLAC FLEETWOOD BROUGHAM 1991-1995 - CHEVROLET CAPRICE 1991-1992 - OLDSMOBILE CUSTOM CRUISER

#### CONDITION:

SOME OF THE VEHICLES LISTED ABOVE MAY EXHIBIT WIPER CHATTER (ESPECIALLY IN COOLER WEATHER).

#### CORRECTION:

IMPROVEMENTS TO THE WINDSHIELD WIPER SYSTEM HAVE RESULTED IN NEW WIPER ARMS BEING RELEASED FOR SERVICE USE ON VEHICLES AFTER VIN BREAKPOINTS LISTED BELOW:

BUICK - SR419520 CADILLAC - SR710430 CHEVROLET - SR147606

ALSO, A NEW AIR INLET GRILLE (P/N'S 10279062-63) WITH REVISED WIPER BLADE PARK RAMP ANGLES TO LIFT THE BLADES OFF THE GLASS TO PREVENT THEM TAKING A SET, HAS BEEN RELEASED FOR PRODUCTION AFTER BREAKPOINT AND SERVICE. THE SCREENS ARE INTERCHANGEABLE FOR 1995 AND PRIOR MODEL YEARS, AND SHOULD BE USED WHEN ADDRESSING A CHATTER CONCERN.

AS ALWAYS, EVALUATIONS OF CHATTER SHOULD BE MADE AFTER THE WINDSHIELD AND BLADES ARE PROPERLY CLEANED.

MAKE SURE THAT THE CORRECT WIPER BLADES ARE IN USE FOR THE VEHICLE IN QUESTION.

VISUAL IDENTIFICATION OF THE DIFFERENT BLADES FROM PRODUCTION ARE AS FOLLOWS:

1991-1994 = RECTANGULAR HOLES IN TOP OF BLADE.

1995 = PRIOR TO BREAKPOINT, TOP OF BLADE HAS NO HOLES AND CAN INSTALL TO ARM ONE WAY ONLY.

1995 = AFTER BREAKPOINT, RECTANGULAR HOLES IN TOP OF BLADE.

#### USAGE CHART:

THE CORRECT SERVICE PART NUMBERS AND USAGES FOR THE ABOVE LISTED 1991 THROUGH 1995 MODEL WIPER ARMS, WIPER INSERTS, AIR INLET GRILLES, AND BLADES ARE AS FOLLOWS:

1991-1994 USAGE 1995 BEFORE B/P AFTER 1995 VIN BREAKPOINT ----- --------- -------------------------

WIPER ARMS RIGHT 22155062 10283600 LEFT 22155063 10283601

WIPER BLADES 22093284 22093284

WIPER INSERTS 12339129 12339129

AIR INLET GRILLE RIGHT 10279062 10279062 LEFT 10279063 10279063

#### IMPORTANT: DUE TO PART IMPROVEMENTS, IT IS POSSIBLE TO USE THE 1995 (PRIOR TO BREAKPOINT) WIPER ARMS ON EARLIER (1991 THROUGH 1994) MODELS WITHOUT CREATING CHATTER, BUT THE EARLIER MODEL ARMS SHOULD *NOT* BE USED ON THE 1995 MODELS.

#### PART AVAILABILITY:

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

#### WARRANTY INFORMATION:

LABOR OPERATION: N3615 BLADE AND/OR INSERT (ONE OR BOTH) N3620 ARM WIPER (ONE OR BOTH) B7351 RIGHT PANEL ASSEMBLY - AIR INLET GRILLE B7352 LEFT PANEL ASSEMBLY - AIR INLET GRILLE

USE PUBLISHED LABOR OPERATION 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 1995 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.