Throttle Position Did Not Return To Idle After Self-Test
Table of contents
C1109 GMC Possible Causes
- Faulty Speed Control Actuator
- Speed Control Actuator harness is open or shorted
- Speed Control Actuator circuit poor electrical connection
How do I fix code C1109 GMC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the C1109 GMC code
The cost of diagnosing the C1109 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C1109 GMC Description
The Powertrain Control Module (PCM) monitors the Speed Control Actuator. The PCM sets the OBDII code when the Speed Control Actuator is not to factory specifications.