Cadillac CTS Owner's Manual page 436

10-116 Vehicle Care
Dinghy Towing Notice: If the vehicle is towed
with all four wheels on the
ground, the drivetrain
components could be damaged.
The repairs would not be
covered by the vehicle warranty.
Do not tow the vehicle with all
four wheels on the ground.
The vehicle was not designed to be
towed with all four wheels on the
ground. If a rear-wheel-drive vehicle
must be towed, a dolly or a trailer
should be used. If an all-wheel-drive
vehicle must be towed, a trailer
should be used. See "Dolly Towing"
following for more information.
Dolly Towing
(Rear-Wheel-Drive Vehicles)
Use the following procedure to dolly
tow a rear-wheel-drive vehicle from
the rear:
1. Attach the dolly to the tow
vehicle following the dolly
manufacturer's instructions.
2. Put the rear wheels on the dolly.