2008 Hummer H3 Owner's Manual - Page 248
2008 Hummer H3 Manual
Page 248 highlights
Weight of the Trailer How heavy can a trailer safely be? 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. It can depend on any special equipment that you have on your vehicle, and the amount of tongue weight the vehicle can carry. See "Weight of the Trailer Tongue" later in this section for more information. Engine Automatic Transmission, 3.7L Engine Automatic Transmission, 5.3L Engine Manual Transmission Axle Ratio 4.56 4.10 4.56 Maximum trailer weight is calculated assuming only the driver is in the tow vehicle and it has all the required trailering equipment. The weight of additional optional equipment, passengers and cargo in the tow vehicle must be subtracted from the maximum trailer weight. Use the following chart to determine how much your vehicle can weigh, based upon your vehicle model and options. Maximum Trailer Weight 4,500 lbs (2 041 kg) 6,000 lbs (2 721 kg) 3,000 lbs (1 364 kg) *GCWR 9,500 lbs (4 309 kg) 11,400 lbs (5 171 kg) 8,000 lbs (3 629 kg) *The Gross Combination Weight Rating (GCWR) in the total allowable weight of the completely loaded vehicle and trailer including any passengers, cargo, equipment and conversions. The GCWR for your vehicle should not be exceeded. Ask your dealer/retailer for our trailering information or advice, or write us at our Customer Assistance Offices. See Customer Assistance Offices on page 7-5 for more information. 4-52