Drive Systems; Four-Wheel Drive - GMC Sierra Instruction Manual

Drive Systems

Four-Wheel Drive

If equipped, four-wheel drive
engages the front axle for extra
traction. Read the appropriate
section for transfer case operation
before using.
Caution
Do not drive on clean, dry
pavement in 4 and 4 (if
equipped) for an extended period
of time. These conditions may
cause premature wear on the
vehicle s powertrain.
Driving on clean, dry pavement in
four-wheel drive may:
Cause a vibration to be felt in
the steering system.
Cause tires to wear faster.
Make the transfer case harder to
shift, and cause it to run noisier.
Warning
Shifting the transfer case to
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). You or someone else
could be seriously injured. Be
sure to set the parking brake
before placing the transfer case in
N (Neutral). See Parking Brake
0 300.
Caution
Extended high-speed operation in
4 may damage or shorten the
life of the drivetrain.
Engagement noise and bump when
shifting between 4 and 4 or from
N (Neutral), with the engine running,
is normal.
Shifting into 4 will turn Traction
®
Control and StabiliTrak off. See
Traction Control/Electronic Stability
Control 0 301.
I n f o r ma t i o n P r o v i d e d b y :
Driving and Operating
Manual Transfer Case
Move the lever to shift into and out
of four-wheel drive.
An indicator light comes on when
four-wheel drive is engaged. See
Four-Wheel-Drive Light 0 142.
291