GMC 2010 Yukon/Yukon XL Owner's Manual page 408

5-46
Use the following procedure to dolly tow the 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 Parking Brake
on page 3 48.
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, turn the transfer case
knob to the Two-Wheel High position.
8. Turn the ignition to LOCK/OFF.