Hummer H2 2005 Getting To Know Manual page 13

Traction Control System
The H2's standard Traction Control
System operates only when it senses
that a wheel is spinning or beginning to
lose traction. When this happens, the
system applies the brakes to limit
wheelspin.
TC2 allows limited wheelspin to help
gain additional traction in deep sand or
mud conditions.
The TC2 system operates only in the
following transfer case modes:
• 4HI Lock
• 4LO Lock
• 4LO Lock and Locking Rear Axle
Activate the TC2 System
• Press the TC2 button located on the
instrument panel to the right of the
steering wheel. The orange indicator
light next to the "2" will illuminate
when the feature is active. If the
transfer case is in a mode where the
feature is not allowed, the indicator
light will flash for 15 seconds and
then go out.
Selectable Extended Rear Ride Height
(if equipped)
This feature is part of the optional elec-
tronically controlled air suspension sys-
tem. The selectable rear ride height
allows you to raise the rear of the
vehicle approximately 2 inches (5 cm)
over the normal ride height for additional
running ground clearance.
To use this feature, the following condi-
tions must be met:
1. All the doors must be fully closed (the
suspension will not rise or lower if a
door is open).
2. The vehicle must be traveling less
than 35 mph (56 km/h), or the system
will not activate.
Tow/Haul Mode
Your vehicle is equipped with a
Tow/Haul mode that assists you when
towing or hauling a heavy load.
When pulling a heavy trailer or load, the
Tow/Haul mode:
• Reduces the frequency and improves
the predictability of transmission
shifts.
• Provides more solid shift feel.
• Improves the control of vehicle speed
while requiring less throttle pedal
activity.
See Section 2 of your Owner Manual.
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