2005 Pontiac Grand Prix Owner's Manual - Page 285
2005 Pontiac Grand Prix Manual
Page 285 highlights
Total Weight on Your Vehicle's Tires Be sure the vehicle's tires are inflated to the upper limit for cold tires. These numbers can be found on the Tire Loading Information label, that is on the inside of the trunk lid. See Loading Your Vehicle on page 4-33. Be sure not to go over the GVW limit for the vehicle, or the GAWR, including the weight of the trailer tongue. If a weight distribution hitch is used, make sure not to go over the rear axle limit before applying the weight distribution spring bars. When using a weight-carrying hitch or a weight-distributing hitch, the trailer tongue (A) should weigh 10 to 15 percent of the total loaded trailer weight (B). After the trailer is loaded, weigh the trailer and then the tongue, separately, to see if the weights are proper. The correct weight could be achieved simply by moving some items around in the trailer. Hitches It is important to have the correct hitch equipment. Crosswinds, large trucks going by, and rough roads are a few reasons why the correct hitch is needed. Here are some rules to follow: • The rear bumper on the vehicle is not intended for hitches. Do not attach rental hitches or other bumper-type hitches to it. Use only a frame-mounted hitch that does not attach to the bumper. • If any holes need to be made in the body of the vehicle to install a trailer hitch, then be sure to seal the holes later when the hitch is removed. If the holes are not sealed, deadly carbon monoxide (CO) from the exhaust can get into the vehicle. See Engine Exhaust on page 2-33. Dirt and water can, too. 4-43