: AUX 07 Escalade

11-28-11, 01:29 PM
What is the AUX button for on the AC/Heater console

11-28-11, 03:03 PM
Rear air

11-29-11, 10:14 AM
I may be wrong but it seems that in my 07, the aux button changes the HVAC from a 3 zone to a 2 zone. When engaged the back of the vehicle matches the drivers temperature settings and when not, the rear controls take precedence.