GM Service Manual Online
For 1990-2009 cars only

Inspection

Action

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

Preliminary

    • Refer to Important Preliminary Checks Before Starting in Symptoms - Engine Controls .
    • Search for bulletins.

Fuel System

Test for leaking fuel injectors. Refer to Fuel Injector Balance Test with Tech 2 or Fuel Injector Balance Test with Special Tool .