GMC 2014 Yukon/Yukon XL Owner's Manual page 423

3. Firmly set the parking brake.
See
.
4. Put the transmission in P (Park).
5. Secure the vehicle to the dolly
following the manufacturer's
instructions.
6. Use an adequate clamping
device designed for towing to
ensure that the front wheels are
locked into the straight position.
7. For four-wheel drive vehicles
with a single speed automatic
transfer case, shift the transfer
case into Two-Wheel Drive High.
See
or
8. Turn the ignition to LOCK/OFF.
Use the following procedure to dolly
tow a four-wheel drive vehicle from
the rear:
1. Attach the dolly to the tow
vehicle following the dolly
manufacturer's instructions.
2. Drive the rear wheels onto the
dolly.
3. Firmly set the parking brake.
See
.
4. Put the transmission in P (Park).
5. Secure the vehicle to the dolly
following the manufacturer's
instructions.
.
6. Use an adequate clamping
device designed for towing to
ensure that the front wheels are
locked into the straight position.
Shifting a four-wheel-drive
vehicle's transfer case into
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). The driver or others
could be injured. Make sure the
parking brake is firmly set before
the transfer case is shifted to
N (Neutral).
7. Shift the transfer case to
N (Neutral). See
.
8. Turn the ignition to LOCK/OFF.
After towing, see Shifting Out of
N (Neutral) under
or
or
.