Buick 2004 Rendezvous Owner's Manual page 316

can tow up to 2,900 lbs. (1 300 kg) with up to five
occupants or up to 3,500 lbs. (1 575 kg) with up to two
occupants. But even that can be too heavy.
It depends on how you plan to use your rig. For
example, speed, altitude, road grades, outside
temperature and how much your vehicle is used to pull
a trailer are all important. And, it can also depend
on any special equipment that you have on your vehicle.
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You can ask your dealer for our trailering information or
advice, or you can write us at:
Buick Customer Assistance Center
P.O. Box 33136
Detroit, MI 48232-5136
In Canada, write to:
General Motors of Canada Limited
Customer Communication Centre, 163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7