GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Body Control System Schematics
Figure 1:

BCM Power, Ground and DLC
Object Number: 2081272 Size: FS
Figure 2:

BCM Inputs and Outputs 1 of 4
Object Number: 2081273 Size: FS
Figure 3:

BCM Inputs and Outputs 2 of 4
Object Number: 2081274 Size: FS
Figure 4:

BCM Inputs and Outputs 3 of 4
Object Number: 2081275 Size: FS
Figure 5:

BCM Inputs and Outputs 4 of 4
Object Number: 2081276 Size: FS