With Vehicle Control Module (VCM)

The Vehicle Control Module (VCM) has a "learning" ability which allows it to make corrections for minor variations in the fuel system to improve driveability. When the battery is disconnected to clear diagnostic trouble codes, or for other repairs, the "learning" process resets and begins again. A change may be noted in the vehicle's performance. To "teach" the vehicle ensure that the engine is at operating temperature. The vehicle should be driven at part throttle with moderate acceleration and idle conditions until normal performance returns.

CAUTION: The VCM must be maintained at a temperature below 85°C (l85°F) at all times. This is most critical when the vehicle is put through a paint baking process. The VCM will become inoperative if its temperature exceeds 85°C (l85°F). It is recommended that temporary insulation be placed around the VCM or removed from the vehicle during the time the vehicle is in a paint oven or other high temperature process. Do Not operate the vehicle if insulation is on the VCM.

CAUTION: Since the VCM is located under hood, its connectors are sealed and cannot be backprobed as in previous model years. Do Not attempt to backprobe as connector or seal damage could occur.