WHISTLE NOISE FROM THROTTLE BODY AT 2500 RPM. Buick Park Avenue 1998

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

SUBJECT: WHISTLE NOISE FROM THROTTLE BODY AT 2500 RPM (INSTALL NEW THROTTLE BODY ASSEMBLY)

MODELS: 1998 BUICK PARK AVENUE 1998 BUICK LESABRE WITH L36 3.8L VIN K ENGINE

CONDITION:

SOME OWNERS MAY COMMENT THAT WHILE DRIVING APPROXIMATELY 40 - 45 MPH UP A SLIGHT GRADE THEY HEAR A CONSTANT WHISTLE TYPE NOISE. THE CONDITION MAY BE DUPLICATED IN THE STALL BY BRAKE TORQUING TO 2300 - 2500 RPM ABOUT 20 - 25% TPS.

CAUSE:

THE THROTTLE BODY AIR BLADE DESIGN WAS CHANGED FOR 1998 MODEL YEAR ON H BODY AND C BODY VEHICLES. THE NEW DESIGN THROTTLE BLADE HAS A PROTRUSION THAT MAY BE CAUSING THE WHISTLE NOISE.

CORRECTION:

INSTALL THROTTLE BODY P/N 24507238. THIS THROTTLE BODY HAS A NEWLY REDESIGNED THROTTLE BLADE.

PARTS INFORMATION:

PARTS ARE CURRENTLY AVAILABLE THROUGH GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE: LABOR OPERATION J5490 AND CURRENT PUBLISHED LABOR TIMES.

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.