GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Object Detection Schematics
Figure 1:

Rear Park Assist (UD7)
Object Number: 2081661 Size: FS
Figure 2:

Lane Departure Warning (UFL)
Object Number: 2081712 Size: FS
Figure 3:

Side Object Detection (UFT)
Object Number: 2081732 Size: FS