Enjoy a full length video from Truck Trend. The way a trailer is loaded can have a big impact on trailer stability and driver safety. Now General Motors has introduced Electronic Trailer Sway Control technology to keep a trailer from swaying and affecting control of the lead vehicle. According to GM, loading too heavily in the rear of the trailer can cause it to sway, an effect called “the tail wagging the dog.” This motion can cause drivers to lose control and endangering themselves and others on the road. The new technology senses that When you’re done you can browse our video library to watch all of our high quality videos covering a wide array of topics.