Pentastar Overvoltage?

Recently had power spikes while out driving around. Started out as the speedometer and tachometer dropping to zero then kicking back up. Now, it's flashing ABS, TCS, and Brake lights at me. Took it in to Jeep to get it checked out as I'm on the downward slope of my warranty, but they can't get it to trip. It is throwing a code for overvoltage. Only thing I can think of is that there might be a build up of ice/snow causing a short somewhere. I'll be deicing and chasing wires after I get off work in the morning to be sure. Anyone have any thoughts or having the same problem?:idontknow:

I had the same issue, it turned out to be the TIPM (Totally Integrated Power Module). The dealership had to replace it.

Thanks Mac. Back at the dealer I bought from. Couldn't find anything wrong done by me. Lol