2008 Chevrolet Tahoe Owner's Manual - Page 201

Driver's Side Temperature Control The driver's side temperature buttons are used to adjust the temperature of the air coming through the system on the driver's side. The temperature can be adjusted even if the system is turned off. This is possible since outside air will always flow through the system as the vehicle is moving forward unless it is set to recirculation mode. See "Recirculation" later in this section. Press the + or − buttons to increase or decrease the cabin temperature. The driver side temperature display will show the temperature setting decreasing or increasing. Passenger's Side Temperature Control The passenger's temperature buttons can be used to change the temperature of the air coming through the system on the passenger's side of the vehicle. The temperature can be adjusted even if the system is turned off. This is possible since outside air will always flow through the system as the vehicle is moving forward unless it is set to recirculation mode. See "Recirculation" later in this section. Press the + or − buttons to increase or decrease the cabin temperature. The passenger side display will show the temperature setting decreasing or increasing. The passenger's temperature setting can be set to match the driver's temperature setting by pressing the PASS button and turning off the PASS indicator. When the passenger's temperature setting is set different than the driver's setting, the indicator on the PASS button will illuminate and both the driver's side and passenger's side temperature displays will be shown. 3-27