2014 136" Promaster gas- flexplate failure at 31K miles. Broken trans mount might have been causing the issue. 3 months past 5-year power train warranty and the dealer/ morpart would not cover it. 5-7 hour job plus parts. Cost me $1500 after tax at the dealer with trans mount replaced. But I was quoted around $900 at local shop. Metallic rattle at start-up and idle - but fixed now!