ROUGH RUNNING/HESITATION (RE-ROUTE THROTTLE POS. WIRE). Buick Skylark 1994

REVISION: 03/25/94

DIVISIONS: 2 3 4 7

THIS BULLETIN IS BEING REVISED TO CORRECT VIN BREAK POINTS FOR BUICK AND OLDSMOBILE. ______________________________________________________________________

SUBJECT: ROUGH RUNNING OR HESITATION CONDITION (RE-ROUTE THROTTLE POSITION SENSOR WIRE LEAD AND REMOVE ADJUSTABLE TIE STRAP)

MODELS: 1994 BUICK SKYLARK - VINS (SOP - RC270920) 1994 OLDSMOBILE ACHIEVA - VINS (SOP - RM020070) 1994 PONTIAC GRAND AM - VINS (SOP - RC746875; SOP - RM543936) WITH 3100 ENGINE (VIN M - RPO L82)

CONDITION:

SOME OWNERS MAY COMMENT ON A ROUGH RUNNING OR HESITATION CONDITION. UPON INSPECTION, A CODE 21 OR 22 MAY BE RETRIEVED.

CAUSE:

THE WIRE HARNESS CONTAINING THE THROTTLE POSITION SENSOR (TPS) CONNECTOR, EGR SOLENOID LEAD, AND IDLE AIR CONTROL (IAC) CONNECTOR HAS BEEN RETAINED TO THE ABS MOTOR PACK. THE ADJUSTABLE TIE STRAP MAY RESTRICT THE MOVEMENT OF THE TPS LEAD ON SOME VEHICLES DURING ENGINE TORQUE ROLL. THIS RESTRICTION MAY CAUSE SOME TPS WIRES TO FRAY, BREAK, OR BECOME DETACHED FROM THE CONNECTOR.

CORRECTION: (SEE ILLUSTRATION)

1. REMOVE THE ADJUSTABLE TIE STRAP AT THE ABS MOTOR PACK TO THE WIRE HARNESS.

2. RE-ROUTE THE WIRE LEAD FOR THE IAC CONNECTOR SO THE LEAD PASSES OVER CRANKCASE VENT TUBE INSTEAD OF UNDER IT.

3. RE-ROUTE WIRE HARNESS ALONG LEFT SIDE OF ABS MOTOR PACK.

4. REPAIR ANY DAMAGED CONNECTORS WITH REPAIR KIT, J-38125-A.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER: T3453 LABOR TIME: 0.3

FIGURES: 1

Object Number: 81917 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.