For 1990-2009 cars

# EXCESSIVE VIBRATION OF ELECTRO INSIDE REARVIEW MIRROR

#### SUBJECT: EXCESSIVE VIBRATION OF ELECTROCHROMIC INSIDE REARVIEW MIRROR (REINSTALL MIRROR/ALIGN TO MOUNTING BUTTON)

#### MODELS: 1991-97 BUICK LESABRE, PARK AVENUE 1995-97 BUICK RIVIERA 1992-97 CADILLAC ELDORADO, SEVILLE 1994-97 CADILLAC CONCOURS, DEVILLE 1991-96 OLDSMOBILE NINETY EIGHT 1991-97 OLDSMOBILE EIGHTY EIGHT 1995-97 OLDSMOBILE AURORA 1996-97 OLDSMOBILE LSS, REGENCY 1991-97 PONTIAC BONNEVILLE

#### CONDITION:

SOME OWNERS MAY COMMENT THAT THE ELECTROCHROMIC REARVIEW MIRROR VIBRATES EXCESSIVELY.

#### CAUSE:

THE MIRROR MAY NOT BE PROPERLY ATTACHED TO THE WINDSHIELD MOUNTING BUTTON.

#### CORRECTION:

THE MIRROR DOES NOT NEED TO BE INITIALLY REPLACED. IT CAN BE REINSTALLED USING THE FOLLOWING PROCEDURE:

1. REMOVE THE INSIDE ELECTROCHROMIC REARVIEW MIRROR FOLLOWING THE PROCEDURE IN SECTION 10-2 OF THE SERVICE MANUAL.

2. REINSTALL THE MIRROR FOLLOWING THE PROCEDURE OUTLINED IN THE SERVICE MANUAL, ENSURING PROPER ALIGNMENT OF THE MIRROR TO THE MOUNTING BUTTON. AN AUDIBLE CLICK MUST BE HEARD WHEN THE MIRROR IS ATTACHED TO THE BUTTON TO GUARANTEE PROPER INSTALLATION.

3. ENSURE THAT THE VIBRATION CONDITION OF THE MIRROR HAS IMPROVED AFTER REINSTALLATION. NO MODIFICATION OR BENDING OF THE ATTACHMENT SPRING CLIP SHOULD BE NECESSARY TO IMPROVE THE CONDITION. IF THIS PROCEDURE DOES NOT CORRECT THE CONDITION, THE MIRROR SHOULD BE REPLACED.

#### WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER: C0040 USE PUBLISHED LABOR OPERATION 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.

COPYRIGHT 1997 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.