My 2004 GTP actually did this to me once when i was doing some extra-heavy cornering BEFORE I installed my aeroforce. I think it was due to the fact of my PCM just hanging out in my air box not strapped down because it did the same thing under heavy cornering a couple days later. After my aerofoce install and PCM tray, I have only seen it once when i hit a HUGE pothole. For some reason I think the gauges go out due to a abrupt shake of the PCM.