GM Service Manual Online
For 1990-2009 cars only

Your vehicle may have a rear climate control system that lets the driver adjust the fan speed for the rear seating area. This system works with the main climate control system.


Object Number: 1488346  Size: B2

This lever used to adjust the fan speed for the rear seat passengers is located below the main climate control system.

(Fan): Slide the lever to 1, 2, or 3 to increase or decrease airflow to the rear seating area. Slide the fan knob to 0 to turn the fan off.

AUX (Auxiliary): Slide the lever to AUX to let the rear passengers adjust the temperature and airflow to the rear seating area.

Your vehicle may also have a rear climate control system that lets the rear passengers adjust the temperature and fan speed for the rear seating area.

When the front climate control is in AUX and the rear climate control fan or temperature button is pressed, the display will show the same airflow modes as the front climate control system. See Dual Climate Control System .


Object Number: 1693503  Size: B1

The front control must be in the AUX position to enable adjustment of the temperature and fan speed on the rear control system. If it is not in AUX, pressing the fan or temperature button on the rear climate control will show a DISABLED message on the Rear Seat Entertainment (RSE) system display.

(Decrease Setting): Press this button to decrease the fan or temperature setting while arrows are displayed.

(Increase Setting): Press this button to increase the fan or temperature setting while arrows are displayed.

(Fan) (Temperature): Press this button once to enable adjustment of the fan speed. The current fan speed setting and arrows are highlighted on the display screen. Press either the left or the right arrow button to increase or decrease fan speed. The on screen display disappears after a few seconds. Press this button twice to enable temperature adjustment. After pressing this button, the current temperature settings are highlighted and appear in the on screen display. The arrows indicate that to increase or decrease temperature, press either the left or right arrow button. The on screen display disappears after a few seconds. Press this button a third time to turn off the on screen display.

Press the up and down arrows to toggle between the fan and temperature settings.

Rear Air Outlets

The outlet behind the driver side rear seat is for the cold air return. Be sure to keep it free from obstructions. Also, keep the area around the base of the center instrument panel console, between and under the front seats, free of objects that could also obstruct airflow to the rear seating area.

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