ELECTRIC OUTSIDE REAR VIEW MIRROR WILL NOT HOLD ADJ./VIB.. GMC Truck GMC C Pickup

********************************************************************** REVISION 10/25/93 * THIS BULLETIN IS BEING REVISED TO INCLUDE THE LABOR TIME. * **********************************************************************

SUBJECT: ELECTRIC OUTSIDE REAR VIEW MIRROR (RPO D48) WILL NOT HOLD ADJUSTMENT OR MIRROR VIBRATION (REPLACE MIRROR GLASS ONLY)

MODELS: 1992-93 C/K TRUCKS WITH RPO D48

CONDITION:

SOME OWNERS MAY COMMENT THAT THE MIRRORS ON THEIR VEHICLES EXPERIENCE SOME VIBRATION OR WILL NOT HOLD ADJUSTMENT.

CAUSE:

THE PLASTIC JACK SCREW SOCKETS ON THE BACK OF THE MIRROR MAY BE BROKEN (FIGURE 1).

CORRECTION:

REPLACE THE MIRROR GLASS (P/N 12546226 RH/12546225 LH) IF THE JACK SCREW SOCKETS ARE BROKEN ON THE MIRROR BACK. BROKEN JACK SCREW SOCKETS CAUSE THE MIRROR GLASS TO BE LOOSE WITHIN THE HOUSING. THE JACK SCREW SOCKET MATERIAL HAS BEEN CHANGED IN ORDER TO MAKE IT MORE DURABLE.

SERVICE PROCEDURE:

1. REMOVE THE MIRROR FROM THE HOUSING BY USING A SCREWDRIVER TO PRY THE TRUNNION FROM THE SADDLE WHICH IS LOCATED ON THE MOTOR PACK. 2. INSTALL THE NEW MIRROR GLASS (P/N 12546226 (RH)/12546225 (LH)).

SERVICE PARTS INFORMATION:

PART NUMBER DESCRIPTION QUANTITY

12546226 MIRROR GLASS REPLACEMENT KIT(RH) 1 12546225 MIRROR GLASS REPLACEMENT KIT(LH) 1

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OP DESCRIPTION TIME

R3240 GLASS, OUTSIDE MIRROR REPLACE(RH) .2 HRS R3241 GLASS, OUTSIDE MIRROR REPLACE(LH) .2 HRS

FIGURES: 1

Object Number: 78785 Size: FS

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.