INFO ON ENGINE KNOCK NOISE AT IDLE. Buick Park Avenue 1997

THIS IS A MONTHLY SERVICE NEWSLETTER ARTICLE. THIS BULLETIN IS NOT INTENDED FOR PUBLICATION.

SUBJECT: INFORMATION ON ENGINE KNOCK NOISE AT IDLE CAUSED BY EXHAUST PIPE CONTACTING STABILIZER BAR

MODELS: 1997 BUICK PARK AVENUE

IF A 1997 PARK AVENUE HAS A NOISE AT IDLE THAT SOUNDS LIKE AN ENGINE KNOCK, CHECK TO SEE IF THERE IS CONTACT BETWEEN THE EXHAUST SYSTEM AND THE FRONT SUSPENSION STABILIZER BAR . THIS CAN BE EASILY MISTAKEN FOR A BASIC ENGINE MECHANICAL PROBLEM. IF POSSIBLE, MOVE THE EXHAUST SO IT DOES NOT CONTACT THE BAR.

WHEN INSPECTING THE VEHICLE FOR THIS CONDITION, USE EITHER A DRIVE ON STYLE LIFT OR AN ALIGNMENT RACK. MISDIAGNOSIS CAN OCCUR IF THE SUSPENSION IS UNLOADED AND THE CRADLE ALLOWED TO TILT.

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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.