Lights Inoperative in Content Theft Deterrent (CTD) Alarm Mode

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Theft Deterrent System Schematics DEFINITION: The vehicle lights do not flash when the Content Theft Deterrent (CTD) system is in alarm mode.
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	Perform one of the following to activate the CTD alarm mode: Operate the PANIC button on the keyless entry transmitter. Complete the following steps: Open the driver window. Lock the vehicle using the power door lock switch. Wait for the SECURITY telltale to turn off. Reach in and unlock the driver door. Open the driver door. Do all of the alarm mode functions activate, lights flash and horn pulses?	Go to Testing for Intermittent Conditions and Poor Connections	Go to Step 3
3	Are only the parking lamps inoperative?	Go to Park, License, and Tail Lamps Inoperative	Go to Content Theft Deterrent (CTD) Alarm Mode Inoperative