GMC SIERRA 2002 Manual page 137

QUADRASTEER
(If Equipped)
The QUADRASTEER System has a control and
diagnostic module that monitors and records current
system status and operational information.
If your vehicle is equipped with the 4 Wheel Steer
system it has the ability to steer the vehicle with all
four wheels.
Once the 4 Wheel Steer mode is selected, it is
recommended to leave the vehicle in this mode
at all times.
The 4WS system is equipped with three different
driving modes:
D
Two wheel steering (2WS)
D
Four wheel steering (4WS)
D
Four wheel steering with a trailer mode (4WS TOW)
2-56
t
(4WS)
The switch is located on the instrument panel.
2WS: In this mode the vehicle will operate like any
other vehicle with two wheel steering. If you want to use
2WS and your vehicle is not in this mode, press the 4
Wheel Steer button until the 2WS indicator, located to
the right of the 4 Wheel Steer button, lights up. If the
2WS indicator is flashing you will have to center the
steering wheel by turning it to the left or right.
If you want to use tire chains, the vehicle needs to be in
2WS mode.