GMC 2010 Sierra Owner's Manual page 26

Dual Automatic Climate Control System
A. Driver and Passenger
Temperature Controls
B. Fan Control
C. AUTO
D. Defrost
E. Air Recirculation
F. Outside Air
See Climate Control System (With Heater Only) on
page 4 19 or Climate Control System (With Air
Conditioning) on page 4 20 and Dual Automatic
Climate Control System on page 4 23.
1-20
G. Air Delivery Mode
Control
H. Display
I. Power Button
J. Rear Window
Defogger
K. Air Conditioning
L. PASS (Passenger)
Transmission
Range Selection Mode
The Range Selection Mode switch is located on the
shift lever. To enable the Range Selection feature, move
the column shift lever to the M (Manual) position. The
current range will appear next to the M. This is the
highest attainable range with all lower gears accessible.
As an example, when 4 (Fourth) gear is selected,
1 (First) through 4 (Fourth) gears are available.