I have a 2004 Pathfinder Armada. This week, my speedometer has quit working on a couple of occasions. All other gauges are working fine. If I turn the vehicle off and restart, it begins working again. After the first time it quit, it worked fine for a couple days, and quit again this morning. I also noticed this morning, it kind of shuttered for a couple seconds while driving. Didn't do it again. Anyone know what could be going on?