Circuit/System Verification
WARNING: This page is about a different car, the 2008 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the SGCM coolant pump operates.
- Ignition ON, command the scan tool SGCM coolant pump output control ON and OFF.
- If the SGCM coolant pump does not operate refer to SGCM Coolant Pump Malfunction in Circuit/System Testing .
- Ignition ON, observe the scan tool SGCM temperature sensor parameters.
- If only the SGCM board temperature sensor reads high, replace the SGCM.