the Following Vehicles with AUTO A/C Controls

Compatible with Chevy
Trailblazer 4.2/5.3/6.0L 2003-2009
Silverado 1500 4.3/4.8/5.3/6.0L 2003-2006
Silverado 1500 Classic 4.3/4.8/5.3/6.0L 2007
Silverado 2500 / 3500 5.3/6.0/6.6/8.1L 2003-2006
Silverado 2500 / 3500 Classic 6.0/6.6/8.1L 2007
Tahoe 4.8/5.3L 2003-2006
Avalanche 1500 / 2500 5.3/8.1L 2003-2006
SSR 5.3/6.0L 2003-2005
Suburban 1500 / 2500 5.3/6.0/8.1L 2003-2006

Compatible with GMC
Envoy 4.2/5.3L 2003-2009
Sierra 1500 4.3/4.8/5.3/6.0L 2003-2006
Sierra 1500 Classic 4.3/4.8/5.3/6.0L 2007
Sierra 2500 / 3500 6.0/6.6/8.1L 2003-2006
Sierra 2500 / 3500 Classic 6.0/6.6/8.1L 2007
Yukon 4.8/5.3L 2003-2006
Yukon Xl 1500 5.3/6.0L 2003-2006
Yukon Xl 2500 6.0/8.1L 2003-2006

Compatible with Isuzu
Ascender 4.2/5.3L 2003-2008

Compatible with Buick
Rainier 4.2/5.3L 2004-2007

Compatible with Cadillac
Escalade 5.3/6.0L 2003-2006

Compatible with Oldsmobile
Escalade 4.2L 2003-2004

Compatible with Saab
9-7X 4.2/5.3/6.0L 2005-2009

Installation Instruction
Unscrew Factory Part
Locate the factory blower motor resistor just above the passenger side floor board. Remove the 2 screws that secure the blower motor resistor to the blower and unplug the connector to the blower motor.

Remove Factory Plug
Disconnect the vehicle's battery and cut the red, black, and purple wire on the 3 wire connector that connects to the blower resistor. Cut the wires 1 at a time

Connect New Harness
Using the included wire harness and crimp connectors match each wire from the vehicle to the new harness and crimp securely. Heat shrink each wire to insure an insulated connection.

Install New Resistor
Install the new resistor into the blower motor using the included screws and washer. Plug the connector from the new harness into the blower motor.