GM Service Manual Online
For 1990-2009 cars only

Checks

Action

DEFINITION: Engine continues to run after key is turned OFF, but runs very rough. If engine runs smooth, check the ignition switch and adjustment.

Preliminary Checks

    • Refer to Symptoms , Important Preliminary Checks Before Starting.
    • Search for bulletins.
    • Check PCM grounds for being clean, tight and in their proper locations. Refer to PCM wiring diagrams in Electrical Diagnosis.

Fuel System

    • Inspect injectors for leaking. Refer to Fuel System Diagnosis for procedure.