GMC 2010 Sierra - Manual (Page 25)

Climate Controls
These systems control the heating, cooling, and
ventilation.
Climate Control System (With Air
Conditioning)
A. Fan Control
B. Temperature Control
C. Air Delivery Mode
Control
D. Air Conditioning
E. Outside Air
F. Air Recirculation
G. Rear Window Defogger
Climate Control System (With Heater Only)
A. Fan Control
B. Temperature Control
C. Air Delivery Mode Control
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