Circuit/System Verification
WARNING: This page is about a different car, the 2006 Chevrolet Monte Carlo and 2006 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
Using a scan tool monitor the typical parameters listed above for all ignition switch positions. Compare the parameters state with the typical scan tool data above.
- If all parameters are all in the normal range for all ignition switch positions and the DTC is current, replace the BCM.