FALSE SETTING TROUBLE CODE 44 LEAN CONDITION

MODELS AFFECTED: 1985 SKYHAWKS EQUPPED WITH 2.0L ENGINE (VIN CODE P) AND AUTOMATIC TRANSMISSION

Some 1985 Skyhawks equipped with the 2.0L engine and automatic transmission may set a false service engine soon light and trouble code 44 after extended periods at idle. The setting of a false Code 44 will exhibit the following characteristics:

1. Vehicle must be started and remain in idle for fifty (50) or more seconds (service engine soon light will then set).

2. Service engine soon light will go out with movement of the throttle (Trouble Code 44 will remain in ECM memory however).

3. Service engine soon light will not reset again until the vehicle is restarted and remains in idle for fifty (50) or more seconds.

4. Code 44 is more likely to set on a cold or semi-warm engine than a hot engine.

Service PRCMs are now available to repair this condition, however, on vehicles exhibiting characteristics other than those listed above (for example: the check engine light does not go out with throttle movement) then normal diagnostic procedures for trouble Code 44 should be used.

Applications for service PROMs on vehicles with 2.0L engines and automatic transmissions are:

P/N 16054804 -All Skyhawks with federal emission, 3.18 axle and without air conditioning.

P/N 16054810 - All Skyhawks withfederal emissions, either the 3.18 or 3.43 axle and air conditioning.

P/N 16054815 - All Skyhawks with California emissions.

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.