Hummer 2008 H2 - Manual (Page 274)

To turn the system off,
press the TCS button for
five seconds.
This light will come on
steady when the traction
control system has been
turned off. This light
flashes when TCS is
active.
If you press the TCS button, the traction control system
will turn off and a TRACTION CONTROL OFF
message will appear on the DIC. Press the TCS button
again to turn the system back on. The TRACTION
CONTROL OFF message will then go off. The Traction
Control System will reset itself at each ignition cycle.
Adding non-dealer/non-retailer accessories can
affect your vehicle’s performance. See Accessories and
Modifications on page 5-3.
Locking Rear Axle
The locking rear axle can give the vehicle additional
traction from the rear wheels when traveling in off-road
situations such as mud, snow, sand, steep hills and
uneven terrain.
The button used to turn
this feature on or off is
located below the transfer
case dial to the right of
the steering wheel.
To lock the rear axle:
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 2-36 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).
4-6