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

Without A45
Object Number: 2081742 Size: FS
Figure 2:

With A45
Object Number: 2081746 Size: FS
Figure 3:

Position Sensors
Object Number: 2081749 Size: FS