EXHAUST MOAN/BOOM AT IDLE. Buick Century 1994

SUBJECT: EXHAUST MOAN/BOOM AT IDLE (INSTALL EXHAUST DAMPENER ASSEMBLY)

MODELS: 1994-96 BUICK CENTURY WAGON 1994-96 OLDSMOBILE CUTLASS CIERA WAGON WITH 3.1L ENGINE (VIN M - RPO L82)

CONDITION:

SOME VEHICLES MAY EXHIBIT A MOAN CONDITION MOST APPARENT WHEN VEHICLE IS IN GEAR, BRAKES APPLIED, ENGINE IDLING AT NORMAL OPERATING TEMPERATURE AND UNDER A HEAVY LOAD.

CAUSE:

VEHICLE EXHAUST SYSTEM EXCITED BY ENGINE EXHAUST PULSE INDUCED VIBRATION.

CORRECTION:

FOLLOWING PROCEDURE AND ILLUSTRATION BELOW, INSTALL EXHAUST DAMPENER ASSEMBLY, P/N 10281828, SECURING IN POSITION SHOWN, UTILIZING CLAMP, P/N 15595048.

1. RAISE VEHICLE.

2. POSITION EXHAUST DAMPENER ASSEMBLY, P/N 10281828, AND CLAMP, P/N 15595048, ON EXHAUST INTERMEDIATE PIPE AS SHOWN IN ILLUSTRATION.

3. TORQUE CLAMP NUTS TO 50 N.M (37 LB FT) WHILE MAINTAINING DAMPENER IN PROPER POSITION.

4. LOWER VEHICLE.

PARTS INFORMATION:

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER: L2008 LABOR TIME: 0.3 HR

FIGURES: 01 ATTACHMENTS: 00

Object Number: 85549 Size: SF

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.