Conditions for Running the DTC
WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
The ignition switch must be ON. The theft deterrent control module cannot have DTC B1327 set as a current DTC.