ENGINE SURGE MAY NEED SERVICE PROM

1985-86 6000 MODELS WITH 2.8L V6 CARBURETED ENGINE (VIN CODE X) AND 4 SPD. AUTOMATIC TRANSMISSION AND FEDERAL EMISSIONS

Customer driveability comments of engine surge may be recieved on subject vehicles. If normal service procedures in Service Manual (Section 6El, Section B--surges and/or chuggle) do not correct the condition, a new service PROM with a revised calibration is now available.

The model applications are:

MODEL EMISSIONS SERVICE YEAR MODELS TRANSMISSION CALIBRATION PROM ----- ------ ------------ ----------- ----

1985-86 6000 4 Spd. Auto. Federal 1228327

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.