GM Service Manual Online
For 1990-2009 cars only
Figure 1:

HVAC Blower Control Schematics (Cell 66) Front


Object Number: 488956  Size: FS
HVAC Components
HVAC Blower Controls Circuit Description
HVAC Blower Control Schematics (Cell 66) Rear
Cell 10: INDVERT Fuse
Cell 10: INDVERT Fuse
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
Handling ESD Sensitive Parts Notice
HVAC Connector End Views
Cell 14: G204
Cell 50: Power, Ground, and Class 2
Cell 50: Power, Ground, and Class 2 (Export)
Cell 50: Power, Ground, and Class 2
Cell 50: Power, Ground, and Class 2 (Export)
Figure 2:

HVAC Blower Control Schematics (Cell 66) Rear


Object Number: 488959  Size: FS
HVAC Components
HVAC Blower Controls Circuit Description
HVAC Blower Control Schematics (Cell 66) Front
Cell 10: CONSOLE Fuse
Cell 10: CONSOLE Fuse
Interior Lights Schematics
Interior Lights Schematics
HVAC Connector End Views
Cell 14: G302 (DeVille 1 of 2)
Cell 14: G302 (Eldorado 1 of 2)
Handling ESD Sensitive Parts Notice