The all-new 2011 Jeep® Grand Cherokee can tow an unsurpassed 3357 kg when properly equipped. Trailer Sway Control[1] senses trailer sway and takes action by automatically applying the right amount of braking to maintain control. Just knowing it's there offers a level of security and confidence for the driver. In order to increase capability for high-load applications including trailer-towing, Pentastar V6 test engines were subjected to a substantial 50-percent increase in severity testing versus previous V6 engines.