Hummer 2008 H2 User Manual download pdf (Page 277)

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101

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

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. The engine speed management will be disabled.

In this mode, engine power is not reduced automatically

and the driven wheels can spin more freely. This can

cause the brake-traction control to activate constantly.

Notice: If you allow the wheel(s) of one axle to spin

excessively while the StabiliTrak

, ABS and brake

warning lights and the SERVICE STABILITRAK

message are displayed, you could damage the

transfer case. The repairs would not be covered by

your warranty. Reduce engine power and do not

spin the wheel(s) excessively while these lights and

this message are displayed.

The traction control system may activate on dry or

rough roads or under conditions such as heavy

acceleration while turning or abrupt upshifts/downshifts

of the transmission. When this happens, you may notice

a reduction in acceleration, or may hear a noise or

vibration. This is normal.

If your vehicle is in cruise control when the system

activates, the StabiliTrak

light will ﬂash and the cruise

control will automatically disengage. When road

conditions allow you to use cruise again, you may

re-engage the cruise control. See Cruise Control on

page 3-12.

StabiliTrak

may also turn off automatically if it

determines that a problem exists with the system.

If the problem does not clear itself after restarting the

vehicle, you should see your dealer/retailer for service.

Steering

Power Steering

If you lose power steering assist because the engine

stops or the system is not functioning, you can steer but

it will take much more effort.

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Hummer 2008 H2 User Manual Page 277

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