Conditions for Running the DTC

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.

Battery voltage is between 9-16 volts.
The ignition switch is in the ON position.
The BCM has attempted to energize the left rear power window down relay control circuit.