GM Service Manual Online
For 1990-2009 cars only

For vehicles with a rear heating system, it lets you adjust the amount of air flowing into the rear of the vehicle, from the front-seating area. This feature works with the main climate-control system in the vehicle.


Object Number: 1869995  Size: B3
AUX: The thumbwheel for this system is located in the switchbank below the audio system.

(Fan): Turn the thumbwheel up or down to increase or decrease the amount of heated air sent to the rear-seating area.

(High): This position supplies the most amount of heat to the rear-seating area.

(Medium): This position supplies half the amount of heat to the rear-seating area.

(Low): This position supplies the least amount of heat to the rear-seating area.

(Off): Turns the rear heating system off.