Starter/Generator Control Module Output Circuit
Table of contents
P1AC0 CHEVROLET Possible Causes
- Faulty Starter/Generator Control Module Cooling Fan Relay
- Starter/Generator Control Module Cooling Fan Relay harness is open or shorted
- Starter/Generator Control Module Cooling Fan Relay circuit poor electrical connection
How do I fix code P1AC0 CHEVROLET?
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 P1AC0 CHEVROLET code
The cost of diagnosing the P1AC0 CHEVROLET 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
- Engine Light ON (or Service Engine Soon Warning Light)
P1AC0 CHEVROLET Description
The Starter/Generator Control Module (SGCM) coolant pump/fan relay supplies battery voltage to the SGCM coolant pump relay and the SGCM coolant fan relay. The SGCM monitors the temperature of the low side driver for the SGCM coolant pump/fan relay. The temperature sensor of the driver is not serviceable and the data for this sensor is not available on the scan tool. This internal driver temperature sensor aids in detecting a control circuit shorted to ground or a shorted relay coil.