GMC 2003 Sierra - Manual (Page 296)

The 4 Wheel Sleer system is equipped with three
drtferent driving modes:
• Two wheel steering (2)
• Four wheel steering (4)
• Four wheel steenng with a traiJer mode ( )
Z: fn this mode the vehicle will operate like any □ther
vehicle wilh Iwo wiieal steering. If you want lo use
2 wheel steer mode апй your vehioio is not fn this тос1е+
press the button until Ihe 2 ir>dicat□г^ located lo the
right of the 4 Wheef Steer button, fights up, ff the
2 Indicalor is flashing yog will have to center Die steering
wheel by turning it lo the lett or right.
Your vehicle will return lo 2 when the transmission is
shifted into NEUTRAL tor йяатр1е when entering a
car wash.
It ycKj want to use lire chains, ihe vehicle needs to be
in 2 wheel steer mode,
4: In this mocte alJ four wheels will help steer the vehicle.
If you went to use 4, and your vehicte Is not In Ihla mode,
press the button, until ihe 4 JncfIcalor, located to the right
of the 4 Wheel Steer button, comes on and stays on. If
the 4 indicator Is flashing you will have to center
Ihe
sieering wheel by luming it to thg left or right
The switch is located on the instrument paneL
4-1S