GMC 2011 Sierra - Manual (Page 28)

Black plate (22,1) GMC Sierra Owner Manual - 2011
1-22 In Brief
Climate Control System (With Heater Only)
A. Fan Control
B. Temperature Control
C. Air Delivery Mode Control
See Climate Control Systems
(with Air Conditioning) on page 8‑1
or Climate Control Systems
(with Heater Only) on page 8‑4.