Buick LaCrosse 2014 Owner's Manual page 331

Use the following procedure to dolly
tow the vehicle from the front:
1. Attach the dolly to the tow
vehicle following the dolly
manufacturer instructions.
2. Drive the front wheels onto the
dolly.
3. Shift the transmission to
P (Park).
4. Firmly set the parking brake.
5. Use an adequate clamping
device designed for towing to
ensure that the front wheels are
locked into the straight-ahead
position.
6. Secure the vehicle to the dolly
following the manufacturer
instructions.
7. Release the parking brake only
after the vehicle being towed is
firmly attached to the towing
vehicle.
8. Turn the ignition to OFF.
Vehicles with all-wheel drive cannot
be dolly towed.
The vehicle cannot be dolly towed
from the rear.