Locking Rear Axle; All Wheel Drive - GMC SIERRA DENALI 2002 Manual

Locking Rear Axle

If your vehicle has this feature, your locking rear axle
can give you additional traction on snow, mud, ice, sand
or gravel. It works like a standard axle most of the time,
but when one of the rear wheels has no traction and
the other does, this feature will allow the wheel with
traction to move the vehicle.
All Wheel Drive
-
With this feature, engine power is sent to all four wheels
when extra traction is needed.
-
This is like four wheel drive, but there is no separate
lever or switch to engage or disengage the front axle.
It is fully automatic, and adjusts itself as needed for
road conditions.
QUADRASTEER
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 4WS system it has
the ability to steer the vehicle with all four wheels.
Once this 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)
t
(4WS)
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