Buick LaCrosse Owner's Manual page 438

Here are some important things to
consider before recreational vehicle
towing:
What is the towing capacity of
the towing vehicle? Be sure to
read the tow vehicle
manufacturer's
recommendations.
What is the distance that will be
traveled? Some vehicles have
restrictions on how far and how
long they can tow.
Is the proper towing equipment
going to be used? See your
dealer or trailering professional
for additional advice and
equipment recommendations.
Is the vehicle ready to be
towed? Just as preparing the
vehicle for a long trip, make sure
the vehicle is prepared to be
towed.
The vehicle was not designed to be
towed with all four wheels on the
ground. If the vehicle must be
towed, a dolly should be used. See
Dolly Towing that follows for more
information.
Vehicles with front-wheel drive can
be dolly towed from the front.
Use the following procedure to dolly
tow the vehicle from the front:
1. Attach the dolly to the tow
vehicle following the dolly
manufacturer's instructions.
2. Drive the front wheels onto the
dolly.