GMC 2007 Envoy - Manual (Page 195)

Rear Climate Control System
Your vehicle has one of the following rear climate
control systems. With either of these systems,
the rear climate controls will be disabled when the
front climate control system is in defrost. This
occurs to provide maximum airflow to clear
the windshield.
The temperature of the air coming through the
rear outlets is determined by the front passenger’s
temperature setting. Use the mode knob to
change the direction of airflow (upper, bi-level or
floor) to the rear seat area.
PWR (Power): Press this button to turn the rear
climate controls on or off.
H
(Panel): When panel mode is selected,
the rear system will distribute air from the
four headliner outlets.
)
(Bi-level): When bi-level mode is selected,
the rear system will distribute air from the
four headliner outlets, the second seat side floor
outlets, and the third seat floor outlet.
195