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Home >> GMC >> 2005 >> Jimmy Part Time, Standard >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Theft Deterrent System >> Description and Operation >> Body Control Module (BCM) >> Door Key Switch
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Door Key Switch

The BCM monitors the door key switches in order to disarm the CTD system. When the lock cylinder turns in order to unlock the door, the switch grounds the disarm input to the BCM.