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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 912 (Theft Deterrent System) >> Description and Operation >> Content Theft Deterrent (CTD) Description and Operation >> CTD Circuit Description >> Liftgate/Ligtglass Ajar Switch

Liftgate/Ligtglass Ajar Switch

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.

The CTD system uses the liftgate and liftglass ajar switchs as a status indicator to activate the alarm. The liftgate/liftglass ajar switch is monitored via a discrete input from the switch. If the BCM receives a ground signal from the ajar switch when the CTD system is armed, the BCM activates the alarm.