Dieseling, Run-On. GMC Truck GMC MD Steel Tilt (W Model) 2002

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2002 🢒 GMC MD Steel Tilt (W Model) 🢒 Engine 🢒 Engine Controls - 5.0L and 5.7L 🢒 Dieseling, Run-On

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 - Engine Controls .

Fuel System Checks

•	Check the Evaporative Emission (EVAP) system and fuel tank venting.

•	Check the fuel injector(s) for leakage.

•	Perform a fuel system diagnosis. Refer to Fuel System Diagnosis .