ENGINE DETONATION/CHUGGLE MAY NEED SERVICE PROM. Pontiac 6000 1985

For 1990-2009 cars

# ENGINE DETONATION/CHUGGLE MAY NEED SERVICE PROM

1983-84 PHOENIX AND 1983-85 6000 MODELS WI 2.8L V6 (VIN CODE X) ENGINES AND AUTOMATIC 3 SPEED TRANSMISSIONS AND FEDERAL EMISSIONS

Some subject vehicles equipped with LE2 V6 carbureted engines and automatic transmission may exhibit engine detonation or chuggle. If normal service procedures in the Service Manual (Section 6El, Section B) do not correct the condition, new serivce PROMS with revised calibrations are now available.

The model applications are:

#### MODEL EMISSIONS SERVICE YEAR MODELS TRANSMISSION CALIBRATION PROM ---- ------ ------------ ------------ ---- 83 Phoenix, 6000 3 Spd. Auto. Federal 1228323 84 Phoenix, 6000 3 Spd. Auto. Federal 1228325 85 6000 3 Spd. Auto. Federal 1228326

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.