P1128 GMC Throttle Control Motor Circuit Short
Possible causes
– Faulty Throttle Control Motor
– Throttle Control Motor harness is open or shorted
– Throttle Control Motor circuit poor electrical connection
– Throttle Control Motor harness is open or shorted
– Throttle Control Motor circuit poor electrical connection
What about the obd code?
Engine Control Module (ECM) detects short both circuits between ECM and throttle control motor.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1128 GMC Description
The throttle control motor is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feedback to the ECM to control the throttle control motor to make the throttle valve opening angle properly in response to driving condition.
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,