GM Service Manual Online
For 1990-2009 cars only

Object Number: 1545278  Size: B3

If your vehicle has a rear climate control system, the rear seat passengers can adjust the direction of the airflow, fan speed and temperature for the rear seating area. This system also works with the main climate control system in the vehicle.

The control panel for this system is located on the back of the center console.

Press the AUX button located on the front climate control panel to turn the rear climate control system on or off. When turned on the rear system operates in automatic mode and the temperature settings selected for the front climate control panel will also be selected for the rear passengers.

To adjust the rear climate control system, the rear passenger can select a different temperature, mode or fan speed.

Whenever the rear passengers have adjusted settings on the rear climate control system, the AUX light is lit on the front climate control system.

When the front climate control system is turned off or in defrost mode, the rear climate control system is turned off. The rear system will turn back on once another front mode is selected.

For more information on how to use the climate control system, see Dual Climate Control System . For more information on the air outlets, see Outlet Adjustment .

Automatic Operation

(Fan): Press this button until AUTO appears on the display to place the system in automatic mode. When automatic operation is active, the system automatically controls the fan speed. If in auto fan mode, pressing the up arrow button will cancel automatic operation and places the system in manual mode. If in auto mode, pressing the down arrow will turn the rear climate control system off.

(Mode): Press the this button until AUTO appears on the display to place the system in automatic mode. When automatic operation is active, the system automatically controls the air delivery mode.

Manual Operation

(Fan): Press these up or down arrow buttons to increase or decrease the fan speed.

(Temperature): Press these up or down arrow buttons to increase or decrease the temperature for the rear seat passengers. Once the rear setting temperature is altered from following the front setting temperature, it will no longer follow changes to the front setting temperature until the front climate control AUX button resets it.

(Mode): Press these buttons to change the air delivery mode. If in AUTO air delivery mode, pressing the up arrow button will cancel automatic operation and place the system in manual mode.

(Vent): This mode directs air to the upper outlets.

(Bi-Level): This mode splits the air between the upper outlets and the floor outlets.

(Floor): This mode directs the air to the floor outlets.

For more information on how to use the front climate control system, see Dual Climate Control System .

For more information on the air outlets, see Outlet Adjustment . Be sure to keep the area under the front seats clear of any objects so that the air inside of the vehicle can circulate effectively.