Black plate (27,1)Cadillac DTS Owner Manual - 2011Pulling A TrailerHere are some important points:. There are many different laws, including speedlimit restrictions, having to do with trailering. Makesure the rig will be legal, not only where you livebut also where you will be driving. A good sourcefor this information can be state or provincialpolice.. Do not tow a trailer at all during the first1,000 miles (1600 km) the new vehicle is driven.The engine, transmission or other parts could bedamaged. The repairs would not be covered by thevehicle's warranty.. Then, during the first 500 miles (800 km) that atrailer is towed, do not drive over 50 mph (80 km/h)and do not make starts at full throttle. This helpsthe engine and other parts of the vehicle wear in atthe heavier loads.. Vehicles can tow in D (Drive). Shift thetransmission to a lower gear if the transmissionshifts too often under heavy loads and/or hillyconditions.. Obey speed limit restrictions when towing a trailer.Do not drive faster than the maximum postedspeed for trailers, or no more than 55 mph(90 km/h), to save wear on the vehicle's parts.. Do not tow a trailer when the outside temperatureis above 100°F (38°C).. If the vehicle has the Side Blind Zone Alert (SBZA)system and it doesn't seem to be working properlywhile pulling a trailer, turn the system off. See SideBlind Zone Alert (SBZA) on page 3‑40 for moreinformation.Three important considerations have to do with weight:. The weight of the trailer. The weight of the trailer tongue. The total weight on the vehicle's tiresWeight of the TrailerHow heavy can a trailer safely be?It should never weigh more than 1,000 lbs (454 kg).But even that can be too heavy.It depends on how the rig is used. For example, speed,altitude, road grades, outside temperature and howmuch the vehicle is used to pull a trailer are allimportant. It can depend on any special equipment onthe vehicle, and the amount of tongue weight thevehicle can carry. See “Weight of the Trailer Tongue”later in this section for more information.5-27