C0278 GMC Open or Short Circuit in ABS Solenoid Relay Circuit
Possible causes
– Brake actuator (skid control ECU)
– ABS solenoid relay circuit
– ABS solenoid relay circuit
What about the obd code?
When solenoid relay is turned on, relay contact is off for 0.2 seconds or longer.
Symptoms
– ABS Warning Light ON
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,