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

Power, Ground and Blower Controls
Object Number: 2081659 Size: FS
Figure 2:

Compressor Controls and Serial Data (L26/LS4)
Object Number: 2081663 Size: FS
Figure 3:

AIR Temperature and Sunload Sensors
Object Number: 2081670 Size: FS
Figure 4:

Air Delivery/Temperature Controls
Object Number: 2081675 Size: FS