Locking Rear Axle - Hummer 2006 H2 Owner's Manual

If you restart your engine, the system reverts to the
standard TCS mode.
See Traction Off Light on page 3-36.
When the traction off light is on, adjust your driving
accordingly.
The traction control system, as delivered from the
factory, will automatically come on whenever you start
your vehicle.
Adding non-GM accessories can affect your vehicle's
performance. See Accessories and Modifications
on page 5-3 for more information.
4-10
The traction off light will
come on when a Traction
Control System or
Anti-Lock Brake System
problem has been detected
and the vehicle needs
service.

Locking Rear Axle

The locking rear axle can give your vehicle additional
traction from the rear wheels when traveling in off-road
situations such as mud, snow, sand, steep hills and
uneven terrain.
To lock the rear axle, do the following:
1. Place the transfer case in the Four-Wheel-Low Lock
mode. This is the only mode which will allow the rear
axle to lock. See Full-Time Four-Wheel Drive on
page 2-30 for more information regarding the transfer
case and Four-Wheel-Low-Lock mode.
2. Press the button with the vehicle stopped or moving
less than 2 mph (3 km/h).
The button used to turn
this feature on or off is
located above the transfer
case buttons to the
right of the steering wheel.