Integrated trailer brake control module fails to provide adequate voltage/amp to safely stop heavy trailers. trailer wiring issues can be ruled out, as brakes operate correctly if trailer hooked to another vehicle. problem affects many vehicles and owners as documented at: http://www.cumminsforum.com/forum/2013-general-discussion/1730945-2013-integrated-trailer-brake-control-problem.html and also at http://www.ramforum.com/f119/brake_controller-71708/
Serpentine belt broke from supposed "wear" at 37k miles with such force that it broke the fan and radiator on a 2013 3500 ram hd truck, rendering the truck's steering, brakes, etc., useless, if on mountain/curvy road extremely dangerous; this vehicle was on interstate highway and difficult to get from left lane to right median. would have been impossible to correct if in curve. truck is still in for repairs at dealership 12 days later. no invoice received; amount due $1500+