GMC 2012 Sierra Series Owner's Manual page 329

Recommended Transfer Case Settings
Driving Conditions
Normal
Severe
Extreme
Vehicle in Tow*
*See Recreational Vehicle Towing on page 10 96 or Towing the Vehicle on
page 10 96.
Notice: Driving on clean, dry
pavement in four-wheel drive for
an extended period of time can
cause premature wear on the
vehicle's powertrain. Do not drive
on clean, dry pavement in
Four-Wheel Drive for extended
periods of time.
Transfer Case Settings
2 4 4
YES
YES
YES
I n f o r ma t i o n P r o v i d e d b y :
Driving and Operating
4 (Four-Wheel Drive Low): This
setting also engages the front axle
and delivers extra torque. You may
N
never need Four-Wheel Drive Low.
It sends maximum power to all
four wheels. You might choose
Four-Wheel Drive Low if you are
driving off-road in deep sand, deep
mud, deep snow, and while climbing
YES
or descending steep hills.
If the vehicle has StabiliTrak
shifting into Four-Wheel Drive Low
will turn Traction Control and
StabiliTrak off. See StabiliTrak
System on page 9 59.
9-45
®
,
®