GM Service Manual Online
For 1990-2009 cars only

Your vehicle has one of the following rear climate control systems. With either system, the rear climate controls will be disabled when the front climate control system is in defrost. This occurs to provide maximum airflow to clear the windshield.


Object Number: 810127  Size: B3

The rear mode and temperature positions now mimic the front control system mode and passenger side temperature.

(Panel): When panel mode is selected in the front controller, the rear system will distribute air from the four headliner outlets.

(Bi-level): When bi-level mode is selected in the front controller, the rear system will distribute air from the four headliner outlets and the third seat floor outlet.

(Floor): When floor mode is selected in the front controller, the rear system will distribute air from the third seat floor outlet.

The temperature of the air coming through the rear outlets is determined by the front passenger's temperature setting. Press the PWR button to turn the rear climate controls on and off. Use the mode knob to change the direction of airflow (upper, bi-level or floor) to the rear seat area.


Object Number: 947446  Size: B2

If your vehicle has the rear seat audio system, the lower buttons are used to adjust the rear seat climate control system. The temperature of the air coming through the rear outlets is determined by the front passenger's temperature setting.

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

(Mode): Press this button to change the direction of airflow (panel, bi-level or floor) to the rear seat area.

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

The rear control will only turn on if the front is on and not in defrost mode.

Outlet Adjustment

Your vehicle may have rear seat outlets that can be used to adjust the airflow toward either seating area, the floor or upward. Move the control in the center of each outlet in any direction to direct airflow.