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Body Control System Schematics

WARNING: This page is about a different car, the 2009 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: BCM Power, Ground and DLC
GM2081272Courtesy of GENERAL MOTORS CORP.
Fig 2: BCM Inputs and Outputs 1 of 4
GM2081273Courtesy of GENERAL MOTORS CORP.
Fig 3: BCM Inputs and Outputs 2 of 4
GM2081274Courtesy of GENERAL MOTORS CORP.
Fig 4: BCM Inputs and Outputs 3 of 4
GM2081275Courtesy of GENERAL MOTORS CORP.
Fig 5: BCM Inputs and Outputs 4 of 4
GM2081276Courtesy of GENERAL MOTORS CORP.