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GMC Truck
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1999
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C 2500 Truck 2WD V8-5.3L VIN T
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Repair and Diagnosis
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Accessories and Optional Equipment
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Antitheft and Alarm Systems
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Description and Operation
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Content Theft Deterrent (CTD)
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General Description
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Idle State
Idle State
The CTD system will be in the idle state when the ignition switch is in the RUN position and any door is open. The BCM will request the security indicator to remain OFF.