Off State
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The CTD system will be in the off state when the ignition switch is in the RUN position and all the doors are closed. The BCM will request the security telltale to remain OFF.