Two or More Fuel Injector DTCs Set
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Test the affected fuel injector circuit for the following:
- An open between the ignition position voltage control circuit splice and the fuel injector connector
- An open between the ECM and the ignition positive voltage control circuit splice
- Test the affected fuel injector for high resistance. Refer to Component Testing .
- If the circuit and fuel injector test normal, replace the ECM.