GM Service Manual Online
For 1990-2009 cars only

Your vehicle has one of the following rear climate control systems. With either of these systems, 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 temperature of the air coming through the rear outlets is determined by the front passenger's temperature setting. Use the mode knob to change the direction of airflow (upper, bi-level or floor) to the rear seat area.

PWR (Power): Press this button to turn the rear climate controls on or off.

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

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

(Floor): When floor mode is selected, the rear system will distribute air from the second seat side floor outlets and the third seat floor outlet.


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.

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

(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.

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