GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Instrument Cluster Schematics
Figure 1:

Power, Ground, Serial Data, and Gages (L26)
Object Number: 2081343 Size: FS
Figure 2:

Power, Ground, Serial Data, and Gages (LS4)
Object Number: 2081344 Size: FS
Figure 3:

Indicators (U2E)
Object Number: 2081356 Size: FS
Figure 4:

Indicators (UH8)
Object Number: 2081358 Size: FS
Figure 5:

Ambient Air Temperature Sensor, Electronic Compass Module, and Oil Level Switch
Object Number: 2081360 Size: FS