Sierra 2500 Denali 2WD V8-6.0L (2011)
Door/Trunk Ajar Indicator/Lamp: Description and Operation
Door Ajar Indicator (w/o AN3)
Door Ajar Indicator Description and Operation (w/o AN3)
Door Ajar Indicator System Components
The door ajar indicator system consists of the following components:
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The body control module (BCM)
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The instrument panel cluster (IPC)
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The driver door ajar switch
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The passenger door ajar switch
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The left rear door ajar switch
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The right rear door ajar switch
The body control module (BCM) receives a discrete inputs from the front and rear door ajar switches to indicate the status of the doors. The BCM then
communicates this status to the instrument panel cluster (IPC) via GMLAN message. The IPC, upon receipt of this GMLAN message, will illuminate the
appropriate door ajar message in the driver information center (DIC) and also send a GMLAN message to the radio to activate the door ajar audible
warning when the following conditions are met:
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The transmission is removed from PARK
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The vehicle speed is greater then 8.05 km/h (5 mph)
