I continue to have issues with erratic gauges on my '05. Each and every time it acts up I pull over somewhere and turn the van off and restart. This seems to get rid of the erratic cluster for several days. This has always worked for me. Other threads suggest ground wires or bad solder joints. What's different about my van is my ignition switch has been kind of sloppy since I bought it. I'm not sure why. Perhaps it was stolen previously and the switch/column was somehow messed up. I usually always have to play with the key to get the key to turn the ignition lock. If I move the key sideways a bit it will allow the key to rotate and start. I wonder if my erratic cluster might somehow be caused by a bad ignition switch. Aren't there electrical connections that make contact when the switch is rotated? If it were bad solder joints or a ground, wouldn't those same issues still be there after a restart? However if the ignition switch contacts were fouled up and restarting cures it for a while, maybe its an issue with the switch or something similar. I've tried to attach a link to a short video of the instrument cluster in action.