GM Service Manual Online
For 1990-2009 cars only

Checks

Action

DEFINITION: The engine continues to run when turn the key OFF, but runs very roughly. If the engine runs smoothly, check the ignition switch and adjustment.

Preliminary Check

Refer to Symptoms .

Fuel System Checks

    â€¢ Check the Evaporative Emission (EVAP) system and fuel tank venting.
    â€¢ Check the fuel injector(s) for leakage.
    â€¢ Perform a fuel system diagnosis. Refer to Fuel System Diagnosis .