I have a 2011 GC with the 3.6L Pentastar and recently I've been having intermittent electrical issues. I'll be driving and suddenly hear the ding, a few warning lights on the dash will light up for a split second, the speedo goes to zero, the engine loses power, and then everything rights itself in an instant. Sometimes when I try to start the van all I hear is a click. If I turn the key to ON for a few seconds and then try to start the van it's fine and fires right up.

Failing TIPM? Bad ground? All of the above? Where should I start troubleshooting? I need my van to be reliable for our vacation next week. Any hints are appreciated.