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HILL DESCENT CONTROL
Hill Descent Control sets and maintains vehicle speed from 3–19 mph while descend-
ing a steep incline in a forward or reverse gear.
1. Press the
Hill Descent Control button on the center of the instrument panel.
Vehicle speed must be below 37 mph to enable the system. The
Control symbol will illuminate on the instrument cluster.
2. Increase or decrease speed by applying the accelerator or brake pedal. The adjust-
ed speed becomes the new set speed. The
actively applying the brakes to maintain vehicle speed.
FOUR-WHEEL DRIVE
Use the electronic four-wheel drive transfer case knob on the left side of the instru-
ment panel to shift into and out of four-wheel drive. The indicator light on the knob
flashes while the transfer case shifts and remains on when the shift is complete. The
current four-wheel drive status is displayed on the Driver Information Center.
2
Two-Wheel Drive High – Use for most streets and highways.
Shift into this mode at any speed except when shifting from 4 .
AUTO Auto Four-Wheel Drive High – Use when traction conditions
vary. Shift into this mode at any speed except when shifting from 4 .
4
Four-Wheel Drive High – Use when extra traction is needed or
in most off-road driving. Shift into this mode at any speed up to 75
mph except when shifting from 4 .
4
Four-Wheel Drive Low – Use when driving off-road in deep
sand, mud or snow, or on steep hills. Shift into or out of this mode when the vehicle is
stopped or moving less than 3 mph with the transmission in Neutral. Shift the trans-
mission into gear when the indicator light stops flashing.
N Neutral – Use when towing the vehicle.
DIESEL EXHAUST BRAKE (
The engine exhaust brake enhances the vehicle brake system by using engine braking
and automatically downshifting the transmission, depending on the length of time the
brakes are applied, to help slow the vehicle on downhill grades.
Press the
Diesel Exhaust Brake button on the center of the instrument panel to
turn the system on or off.
TIRE PRESSURE MONITOR
The
Low Tire Pressure light on the instrument cluster illuminates when one or more
of the vehicle's tires is significantly underinflated. Fill the tires to the proper tire pres-
sures listed on the Tire and Loading Information label, located below the driver's door
latch. Current tire pressures can be viewed on the Driver Information Center.
Optional equipment
F
F
See Driving and Operating in your Owner's Manual.
F
See Driving and Operating in your Owner's Manual.
DIESEL MODELS ONLY
See Vehicle Care in your Owner's Manual.
symbol flashes when the system is
)
See your Duramax Diesel Owner's Manual.
Hill Descent
15
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