GM Service Manual Online
For 1990-2009 cars only

For vehicles with a rear climate control system, the driver or rear seat passengers may be able to 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 is located below the main climate control system and it is used to adjust the fan speed for the rear seat passengers.

(Off): Turns the fan off.

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

AUX (Auxiliary): Slide the lever to AUX to let the rear passengers adjust the temperature and airflow to 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 shows the same airflow modes as the front climate control system. See Dual Climate Control SystemDual 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 to decrease the fan or temperature setting while arrows are displayed.

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

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

Press 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.

See Climate Control Systemor Dual Climate Control System for more information on the main climate control system. See Outlet Adjustment for information on ventilation.