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, observe the scan tool Sensor Voltage Feed Output parameter. The reading should be between 8.0-9.0 volts.
- Perform the LED Test, using the scan tool. Observe the operation of the three LEDs. All three LEDs should illuminate.