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GMC 2005 Yukon - Page 121

GMC 2005 Yukon
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If the SERVICE 4WD message stays on, you should
take your vehicle to your dealer for service. See
SERVICE 4WD under Driver Information Center (DIC)
on page 3-54.
Shifting Into Four Wheel Low
To shift to the Four-Wheel Low position, the ignition
must be in RUN and the vehicle must be stopped
or moving less than 3 mph (5 km/h) with the
transmission in NEUTRAL (N). Press and release the
Four-Wheel Low switch. You must wait for the
Four-Wheel Low indicator light to stop flashing and
remain on before shifting your transmission in gear.
Notice: Shifting the transmission into gear before
the Four-Wheel Low indicator light has stopped
flashing could damage the transfer case. To
help avoid damaging your vehicle, always wait for
the Four-Wheel Low indicator light to stop flashing
before shifting the transmission into gear.
If the Four-Wheel Low button is pressed when your
vehicle is in gear and/or moving, the Four-Wheel Low
indicator light will flash for 30 seconds and not complete
the shift unless your vehicle is moving less than
3 mph (5 km/h) and the transmission is in NEUTRAL (N).
After 30 seconds, the transfer case will return to the
setting last chosen.
When in Four-Wheel Low, StabiliTrak
®
is automatically
disabled. For more information see StabiliTrak
®
System on page 4-10.
Shifting Out of Four Wheel-Low
To shift from Four-Wheel Low to All-Wheel Drive, your
vehicle must be stopped or moving less than 3 mph
(5 km/h) with the transmission in NEUTRAL (N) and the
ignition in RUN. Press and release the all-wheel drive
button. You must wait for the All-Wheel Drive indicator
light to stop flashing and remain illuminated before
shifting your transmission into gear.
If the All-Wheel Drive button is pressed when your
vehicle is in gear and/or moving, the All-Wheel Drive
indicator light will flash for 30 seconds but will not
complete the shift unless your vehicle is moving less
than 3 mph (5 km/h) and the transmission is in
NEUTRAL (N).
Shifting Into NEUTRAL
To shift the transfer case to NEUTRAL, do the following:
1. Make sure the vehicle is parked so that it will
not roll.
2. Set the parking brake. See Parking Brake on
page 2-35 for more information.
3. Start the vehicle or turn the ignition to RUN.
4. Put the transmission in NEUTRAL (N).
5. Shift the transfer case to All-Wheel Drive.
2-33

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