2009 GMC YUKON light

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Page 130 of 576

GMC YUKON 2009  Owners Manual To program the new additional key:
1. Verify that the new key has a
1stamped on it.
2. Insert the original, already programmed, key in the
ignition and start the engine. If the engine will not
start,

Page 131 of 576

GMC YUKON 2009  Owners Manual Ignition Positions
The ignition switch has
four different positions.
To shift out of P (Park), the ignition must be in ON/RUN
or ACC/ACCESSORY and the regular brake pedal
must be applied.
A (LOCK/OFF)

Page 136 of 576

GMC YUKON 2009  Owners Manual See “Range Selection Mode” later in this section.
P (Park):This position locks the rear wheels. It is the
best position to use when starting the engine because the
vehicle cannot move easily. When

Page 141 of 576

GMC YUKON 2009  Owners Manual Tow/Haul Mode
The vehicle has a Tow/Haul mode. The selector button
is located on the end of the column shift lever. You
can use this feature to assist when towing or hauling a
heavy load or if there i

Page 143 of 576

GMC YUKON 2009  Owners Manual Four-Wheel Drive
If the vehicle has four-wheel drive, you can send the
engine’s driving power to all four wheels for extra
traction. Read the following before using four-wheel
drive.
Notice:Driving

Page 144 of 576

GMC YUKON 2009  Owners Manual 2m(Two-Wheel Drive High):This setting is used for
driving in most street and highway situations. The
front axle is not engaged in two-wheel drive. This setting
also provides the best fuel economy.
AUT

Page 145 of 576

GMC YUKON 2009  Owners Manual Shifting Into Four-Wheel Drive High or
AUTO (Automatic Four-Wheel Drive)
Turn the knob to the Four-Wheel High or AUTO position.
This can be done at any speed, except when shifting
from Four-Wheel Driv

Page 146 of 576

GMC YUKON 2009  Owners Manual Shifting Out of Four-Wheel Drive Low
To shift from Four-Wheel Drive Low to Four-Wheel Drive
High, AUTO, or Two-Wheel Drive High, the vehicle must
be stopped or moving less than 3 mph (5 km/h) with the