Circuit/System Verification
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Start the engine for 1 minute and observe the TCM power up temperature sensor and the TCM temperature sensor.
- The system is operating normally if the TCM power up temperature is within 10°C (18°F) of the TCM temperature sensor.