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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1129 (Theft Deterrent System) >> Diagnostic Information and Procedures >> Content Theft Deterrent (CTD) Does Not Disarm with Key Lock >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, verify the scan tool Key Cylinder Lock/Unlock Switch parameter cycles between Idle and Unlock while turning the driver door lock cylinder with the vehicle key.

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