P0674 GMC Cylinder 4 Glow Plug Circuit Fault
Possible causes
– Faulty cylinder #4 glow plug
– Cylinder #4 glow plug harness is open or shroted
– Cylinder #4 glow plug circuit poor electrical connection
– Faulty glow plug module
– Cylinder #4 glow plug harness is open or shroted
– Cylinder #4 glow plug circuit poor electrical connection
– Faulty glow plug module
What about the obd code?
The Engine Control Module (ECM) has detected a fault in the cylinder #4 glow plug circuit
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Lack/Loss of Power
– The engine may be harder to start
– Engine hesitation
– Lack/Loss of Power
– The engine may be harder to start
– Engine hesitation
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,