GMC 2008 Yukon Denali Owner's Manual page 289

The traction control part of StabiliTrak
off by pressing and releasing the StabiliTrak
if both systems (traction control and StabiliTrak
previously on. To disable both traction control and
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StabiliTrak , press and hold the button for five seconds.
Traction control and StabiliTrak
pressing and releasing the StabiliTrak
not automatically shut off for any other reason.
When the TCS or StabiliTrak
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StabiliTrak light and the appropriate TCS off or
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StabiliTrak off message will be displayed on the DIC to
warn the driver. Your vehicle will still have brake-traction
control when traction control is off, but will not be
able to use the engine speed management system. See
"Traction Control Operation" next for more information.
The traction control disable
button is located on the
instrument panel below the
climate controls.
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can be turned
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button
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) were
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can be turned on by
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button if
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system is turned off, the
When the traction control system has been turned off,
you may still hear system noises as a result of the
brake-traction control coming on.
It is recommended to leave the system on for normal
driving conditions, but it may be necessary to turn
the system off if your vehicle is stuck in sand, mud, ice
or snow, and you want to "rock" your vehicle to
attempt to free it. It may also be necessary to turn off
the system when driving in extreme off-road conditions
where high wheel spin is required. See If Your
Vehicle is Stuck in Sand, Mud, Ice, or Snow on
page 4-32.
Traction Control Operation
The traction control system is part of the StabiliTrak
system. Traction control limits wheel spin by reducing
engine power to the wheels (engine speed
management) and by applying brakes to each individual
wheel (brake-traction control) as necessary.
The traction control system is enabled automatically
when you start your vehicle. It will activate and the
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StabiliTrak light will flash if it senses that any of the
wheels are spinning or beginning to lose traction while
driving. If you turn off traction control, only the
brake-traction control portion of traction control will work.
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4-7