GMC Canyon Owner's Manual page 296

Dolly Towing
Front Towing
(Front Wheels Off the Ground)
Two-Wheel-Drive Vehicles
Notice: If you tow a two-wheel-drive vehicle
with the rear wheels on the ground, the
transmission could be damaged. The repairs
would not be covered by your warranty.
Never tow your vehicle with the rear wheels
on the ground.
Two-wheel-drive vehicles should not be towed with
the rear wheels on the ground. Two-wheel-drive
transmissions have no provisions for internal
lubrication while being towed. To dolly tow a
two-wheel-drive vehicle, you must tow the vehicle
with the rear wheels on the dolly. See "Rear Towing
(Rear Wheels Off the Ground)" later in this section
for more information.
296
Four-Wheel-Drive Vehicles
Use the following procedure to dolly tow your
vehicle from the front:
1. Drive the vehicle onto the dolly.
2. Firmly set the parking brake. See Parking
Brake on page 130 for more information.