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

FE1, FE3, F41
Object Number: 2081245 Size: FS
Figure 2:

F55
Object Number: 2081246 Size: FS