Circuit/System Verification
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 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 gage sweep test with the scan tool. Verify that the engine coolant temperature gage sweeps from its low to high position.
- If the engine coolant gage does not sweep from its low to high position, replace the IPC.