SURGE, ROUGH IDLE / A/C INOP UNPROTECTED WIRE HARNESS

1985-86 PONTIAC 6000 AND STE VEHICLES WITH 2.8L EFI V-6 ENGINE (VIN CODE W)

CONDITION:

--------- SEVERAL CONDITIONS MAY OCCUR WHICH COULD CAUSE INTERMITTENT OR SOLID MALFUNCTIONS, AND INCLUDE:

1. LOSS OF GENERATOR FUNCTION.

2. LOSS OF AIR CONDITIONING COMPRESSOR OPERATION OR BLOWN FUSE.

3. ON PONTIAC 6000 STE ONLY, A TRANSISTOR IN THE A/C CONTROL HEAD MAY BE SHORTED, CAUSING A LOSS OF A/C OPERATION. THIS ALSO RESULTS IN A LOSS OF "A/C CLUTCH APPLIED" SIGNAL TO THE ECM, WHICH MAY RESULT IN A SURGE OR ROUGH IDLE COMPLAINT.

CAUSE:

ENGINE WIRE HARNESS COULD RUB THROUGH IN THE AREA SHOWN IN THE ILLU- STRATION, AND CAUSE A SHORT IN ANY OF SEVERAL CIRCUITS.

CORRECTION:

REPAIR ANY DAMAGED WIRES IN THE AREA SHOWN IN THE ILLUSTRATION. WRAP THE ENTIRE AREA OF THE HARNESS WITH AT LEAST FOUR LAYERS OF ELECTRICAL TAPE, THEN USE TIE STRAPS TO SECURE THE HARNESS AWAY FROM THE SHARP EDGE OF THE BLOCK.

NOTICE: THIS CONDITION WAS CORRECTED IN PRODUCTION AS OF FEBRUARY 17, 1986.

WARRANTY INFORMATION: USE EXISTING LABOR OPERATION.

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.