On my way home. Going through in town (slow)traffic all of sudden I notice I had no power steering & no brakes, no please pull out , I noticed if I keep my rpm about 1500, I would get a little power steering & brakes back!, 4 miles to get home , I drove home slowly What happened was I lost my serpentine belt tensioner!!! .MY MAIN Purpose, for my truck is to t my fifth wheel RV!!, I live in the north west of US, LIKE! in the mountains!! Terrified that it wonât happen again!ðŸ³â¹ï¸