I had to replace all four of my brakes and hubs said it was my brake release that controls the brakes when the trailer breaks lose or the trailer gain set to high, will I now have new brakes and hubs and guess what it was a short in the trailer wires going to the truck, I told my wife I broke our rule never buy any new product wait a year for them to get the bugs out, had a Carriage Cameo pulled it 30,000 plus miles with out brake problems. I still love my GD but if one more thing goes that cost over a 1000.00 and am total Lippert will not cover it the GD is gone. On a litter note GD has went the extra mile on other things that have gone wrong. I replaced with Dexter hubs and adjustable brakes made in the USA. :'(