Grand Prix V6-3.8L VIN K (1998)
Body Control Module: Component Tests and General Diagnostics
Body Control Module (BCM)
This vehicle is equipped with one of three Body Control Module (BCM) types. The BCM type installed on this vehicle is based on vehicle equipment
content and options.
The BCM types are:
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BCM type 2.
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BCM type 3.
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BCM type 4.
Refer to Diagnostics for more information on how to identify the BCM type installed. See: Reading and Clearing Diagnostic Trouble Codes
BCM Type 2
The BCM Type 2 provides Retained Accessory Power (RAP), audible warnings, interior lighting, and automatic power door locks.
BCM Type 3
The BCM Type 3 provides all of the features of the BCM type 2 plus keyless entry. Vehicles with RPO AU0 are equipped with a BCM type 3.
BCM Type 4
The BCM Type provides all of the features of the BCM type 2 and 3 plus content theft deterrent Vehicle with RPO AU0 and UA6 are equipped
with a BCM type 4.
Introduction
This vehicle is equipped with a Body Control Module (BCM). The BCM performs multiple body control functions. Several vehicle systems are directly
connected to the BCM, such as the Retained Accessory Power (RAP), audible warnings, interior lighting, door locks, keyless entry, and the content theft
deterrent. These systems are controlled by the BCM's outputs. The BCM controls its outputs based upon input information obtained from sensors and
switches that are directly connected to the BCM. The BCM evaluates input information and controls body systems by commanding an output on or off.
