2012 Buick LaCrosse Owner Manual - Page 336

9-62 Driving and Operating 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 Information label. See Vehicle Load Limits on page 9‑12. Make sure not to go over the GVW limit for the vehicle, including the weight of the trailer tongue. Towing Equipment Hitches Use the correct hitch equipment. See your dealer or a hitch dealer for assistance. . The trailer tongue (A) should weigh 10 to 15 percent of the total loaded trailer weight (B). After loading the trailer, weigh the trailer and then the tongue, separately, to see if the weights are proper. If they are not, adjustments might be made by moving some items around in the trailer. Trailer Towing (eAssist) The vehicle is neither designed nor intended to tow a trailer. . 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. Will any holes be made in the body of the vehicle when the trailer hitch is installed? If there are, seal the holes when the hitch is removed. If the holes are not sealed, dirt, water, and deadly carbon monoxide (CO) from the exhaust can get into the vehicle. See Engine Exhaust on page 9‑30.