GM Service Manual Online
For 1990-2009 cars only

Inspections

Action

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

Preliminary Inspections

    • Refer to Important Preliminary Inspections Before Starting in Symptoms - Engine Controls .
    • Search for bulletins.
    • Verify that the powertrain control module (PCM) grounds are clean, tight, and in the proper locations. Refer to Power and Grounding Component Views in Wiring Systems and Engine Controls Schematics .

Fuel System

    • Inspect the fuel pressure regulator hose for the presence of fuel. Replace the fuel pressure regulator if fuel is found in the hose. Refer to Fuel Pressure Regulator Replacement .