SQUEAK FROM FRONT OF VEHICLE REPLACE EXHAUST PIPE SPRINGS. Pontiac Trans Sport 1990

REVISION 08/27/93

THIS BULLETIN IS BEING REVISED TO INCLUDE ADDITIONAL MODEL YEARS, VEHICLE MODELS AND ENGINE TYPES. ART WORK REMAINS THE SAME. ----------------------------------------------------------------------

APPLICATION: 1990-94 "A AND W" CARS AND U-VANS

CONDITION:

SOME 1990-94 U-VANS AND "A AND W" CARS WITH ENGINES INDICATED BELOW, MAY EXHIBIT A SQUEAK NOISE COMING FROM THE FRONT OF THE VEHICLE. THIS CONDITION IS MOST EVIDENT DURING A "GARAGE SHIFT" MANEUVER, BUT MAY OCCUR DURING ANY MANEUVER OR ACTION THAT RESULTS IN A VEHICLE ROCKING MOTION SUCH AS ENTERING OR EXITING A VEHICLE.

VEHICLE MODEL ENGINE TYPE/RPO VIN ENGINE I.D. ------------- --------------- ---------------

A-CAR 3.1L V-6 / LH0 T 3.3L V-6 / LG7 N

W-CAR 2.5L L-4 / LR8 R 3.1L V-6 / LH0 T 3.4L V-6 / LQ1 X 3.8L V-6 / L27 L

U-VAN 3.1L V-6 / LG6 D 3.8L V-6 / L27 L

CAUSE:

MOVEMENT BETWEEN THE EXHAUST SEAL AND THE EXHAUST MANIFOLD AND/OR THE EXHAUST PIPE GENERATES A NOISE CONDITION.

CORRECTION:

INSTALL DAMPACK DAMPERS, P/N 10218583 (TWO REQUIRED) AND WASHERS, P/N 2441143 (TWO REQUIRED) IN PLACE OF THE EXISTING EXHAUST MANIFOLD PIPE SPRINGS AS SHOWN IN THE ILLUSTRATION.

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

LABOR OPERATION NUMBER: T1844 LABOR TIME: 0.3 HR.

Object Number: 81306 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.