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

Power, Ground, Serial Data and Blower Controls
Object Number: 2179951 Size: FS
Figure 2:

HVAC Faceplate
Object Number: 2179952 Size: FS
Figure 3:

Mode Controls
Object Number: 2179954 Size: FS
Figure 4:

Temperature Controls
Object Number: 2179955 Size: FS
Figure 5:

Temperature Sensors
Object Number: 2179956 Size: FS
Figure 6:

Compressor Controls (LTD/LE5)
Object Number: 2179957 Size: FS
Figure 7:

Outside Moisture and Ambient Light/Sunlight Sensors
Object Number: 2179959 Size: FS
Figure 8:

Air Quality Sensor
Object Number: 2179960 Size: FS