EXHAUST MOAN/BOOM INSTALL EXHAUST DAMPER. Chevrolet Lumina 1991

REVISION: 10/14/94

BULLETIN BEING REVISED TO ADD MODEL YEARS 1994-95, ART WORK AND WARRANTY INFORMATION HAS ALSO BEEN REVISED. PREVIOUS DIVISIONAL PUBLICATION NUMBERS WERE:

CHEVROLET 93-52-6F PONTIAC 93-6-14 OLDSMOBILE 93-T-22 GM OF CANADA 93-6F-101 ---------------------------------------------------------------------- SUBJECT: EXHAUST MOAN/BOOM (INSTALL DAMPENER)

MODELS: 1991 AND 1993-95 CHEVROLET LUMINA AND MONTE CARLO 1991 AND 1993-95 OLDSMOBILE CUTLASS SUPREME 1991 AND 1993-95 PONTIAC GRAND PRIX WITH 3.4L V-6 ENGINE (VIN X - RPO LQ1)

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CONDITION: SOME 1991 W-CARS ASSEMBLED PRIOR TO VIN BREAKPOINTS INDICATED BELOW AND 1993-95 W-CARS WITH 3.4L V-6 ENGINES (RPO LQ1), MAY EXHIBIT AN EXHAUST MOAN/BOOM AUDIBLE IN THE VEHICLE PASSENGER COMPARTMENT.

VIN BREAKPOINTS

CHEVROLET - 2G1WP11X5M9192950

PONTIAC - 1G2WT54X3MF262219

OLDSMOBILE - 1G3WH14X5MD360170

CAUSE: VEHICLE EXHAUST SYSTEM EXCITED BY ENGINE EXHAUST PULSE INDUCED VIBRATION.

CORRECTION: FOLLOWING INSTRUCTIONS AND ILLUSTRATION BELOW, INSTALL DAMPENER, P/N 10199232.

1. RAISE VEHICLE. 2. REMOVE MUFFLER CROSSOVER PIPE CLAMP NUTS (SEE FIGURE). 3. INSTALL AND POSITION DAMPENER, P/N 10199232 TO CLAMP AS SHOWN, INSTALL CLAMP NUTS AND TORQUE NUTS TO 50 N.M (37 LBS.FT.). 4. LOWER VEHICLE.

PART AVAILABILITY:

PART IS CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE: LABOR OPERATION NUMBER: L2008 LABOR TIME: 0.3 HOURS USE PUBLISHED LABOR OPERATION TIME.

FIGURES: 1

Object Number: 84913 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.