Hey all. I'm having an intermittent problem with my voltage gauge pegging at 18 volts once in a while. The first time it happened I pulled over, took a look, didn't see a problem, then it went back to normal. When it happens, if I shut it off/restart, it's fine. Haven't troubleshot much yet, wondering if it's a common problem some of you might have had and can steer me in the right direction? Thanks! 2000 Ram 1500 5.9