Cadillac 2011 DTS Owner's Manual page 304

The vehicle can be towed using a dolly. To tow the
vehicle using a dolly, follow these steps:
1. Put the front wheels on a dolly.
2. Put the gear shift lever in P (Park).
3. Set the parking brake.
4. Clamp the steering wheel in a straight-ahead
position with a clamping device designed for
towing.
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5. Remove the key from the ignition.
6. Secure the vehicle to the dolly.
7. Release the parking brake.
The Cadillac Professional Vehicle cannot tow a trailer.
The driver can lose control when pulling a trailer if
the correct equipment is not used or the vehicle is
not driven properly. For example, if the trailer is
too heavy, the brakes may not work well
even at all. The driver and passengers could be
seriously injured. The vehicle may also be
damaged; the resulting repairs would not be
covered by the vehicle warranty. Pull a trailer only
if all the steps in this section have been followed.
Ask your dealer for advice and information about
towing a trailer with the vehicle.
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