GM Service Manual Online
For 1990-2009 cars only

If your vehicle is equipped with this system, there are controls located in the overhead console and on the back of the console in the rear seat area. The system can be controlled from the overhead controls or the rear controls.

Front Controls


Object Number: 874078  Size: B2

The overhead control has three knobs that control airflow speed, temperature and airflow location. To adjust the airflow speed turn the knob located on the left side of the control panel. To adjust the air temperature turn the temperature knob on the center of the control panel to increase or decrease the temperature. To regulate airflow location adjust the right knob on the control panel.

The system also has AUTO settings that can automatically control the fan speed and/or mode of the air delivery to the rear seating area.

(Off): An off setting, located on the overhead climate control panel also allows the driver to turn off the rear seat passenger controls from the front seat.

Rear Controls


Object Number: 870560  Size: B3

The rear seat controls have the following settings:

(On/Off): Press this button to turn the rear seat comfort controls on or off.

(Mode): Press this button to select the air delivery, setting, and AUTO mode.

(Temperature): Press this button up or down to increase or decrease the temperature setting.

(Fan): Press this button up or down to adjust the fan speed.