Operation CHARM
: Car repair manuals for everyone.
Home
>>
GMC Truck
>>
1999
>>
C 1500 Truck 2WD V6-4.3L VIN W
>>
Repair and Diagnosis
>>
Accessories and Optional Equipment
>>
Antitheft and Alarm Systems
>>
Description and Operation
>>
Content Theft Deterrent (CTD)
>>
General Description
>>
Off State
Off State
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 indicator to remain OFF.