P0279 GMC Cylinder 7 Injector Circuit Low
Possible causes
– Dirty Fuel Injector 7
– Faulty Fuel Injector 7
– Plugged Fuel Injector 7
– Fuel injector 7 harness is open or shorted
– Fuel injector 7 circuit poor electrical connection
– Faulty Fuel Injector 7
– Plugged Fuel Injector 7
– Fuel injector 7 harness is open or shorted
– Fuel injector 7 circuit poor electrical connection
Tech description
Clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Engine Misfire
– Engine Run Rough
– Low MPG
– Engine Misfire
– Engine Run Rough
– Low MPG
P0279 GMC Description
Code P0279 GMC is triggered when the Engine Control Module (ECM) detects a low voltage in the Fuel Injector 7 Circuit. During normal conditions the ECM turns the Fuel Injectors ON and OFF in the Fuel Injection System.
GMC Vehicle:GMC Acadia,GMC Canyon,GMC Envoy,GMC Savana 1500,GMC Savana 2500,GMC Savana 3500,GMC Sierra 1500,GMC Sierra 2500 HD,GMC Sierra 3500 HD,GMC Terrain,GMC Yukon,GMC Yukon XL 1500,GMC Yukon XL 2500,