2003 GMC Safari Owner's Manual - Page 209

The following chart shows how much your trailer can weigh, based upon your vehicle model and options. Two-Wheel Drive (Passenger) All-Wheel Drive (Cargo) All-Wheel Drive (Passenger) Maximum trailer weight is calculated assuming the driver and one passenger are in the tow vehicle and it has all therequired trailering equipment. The weight of additional optional equipment, passengers and cargo in the tow vehicle must be subtracted from the maximum trailer weight. You can ask your dealer for our trailering information or advice, or you can write us at address listed in your the Warranty and Owner Assistance InformationBooklet. In Canada, write to: General Motors of Canada Limited Customer Communication Centre, 163-005 1908 Colonel Sam Drive Oshawa, Ontario L I H 8P7 4-34