BELT RUMBLE NOISE AT LOW IDLE SPEEDS (INSTALL. Chevrolet Corvette 1998

SUBJECT: BELT RUMBLE NOISE AT LOW IDLE SPEEDS (INSTALL ACCESSORY DRIVE BELT TENSIONER/ACCESSORY DRIVE BELT)

MODELS: 1997-1998 CHEVROLET CORVETTE WITH 5.7L ENGINE (VIN G - RPO LS1) AND 4L60-E AUTOMATIC TRANSMISSION

BUILT PRIOR TO VIN BREAKPOINTS: 1997--109680 1998--100060

CONDITION:

SOME OWNERS MAY COMMENT ON ACCESSORY DRIVE BELT NOISE AT LOW IDLE SPEEDS WITH A/C ON AND P/S AT FULL TURNED LOCKED. CONDITION MAY BE MORE PROMINENT AT HIGH AMBIENT TEMPERATURES AND DURING ENGINE SHUT DOWN.

CORRECTION:

INSTALL THE PART NUMBERS LISTED BELOW.

PARTS INFORMATION:

DESCRIPTION PART NUMBER ----------- ---------- ACCESSORY DRIVE BELT TENSIONER 12559325 ACCESSORY DRIVE BELT 12561501

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER DESCRIPTION LABOR TIME --------------- ----------- ----------

J0667 ACCESSORY DRIVE BELT USE PUBLISHED LABOR OPERATION TIME

J0690 TENSIONER, ACCESSORY USE PUBLISHED DRIVE BELT 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.