Circuit/System Verification
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Ignition ON, perform the engine coolant gauge sweep test with the scan tool. Verify that the engine coolant temperature gauge sweeps from its low to high position.
- If the engine coolant gauge does not sweep from its low to high position, replace the IPC.