My driver information center on my 02 GP GT is the one with the four settings. MPG, oil life, range and fuel used. The oil life and fuel used work just fine. However the MPG and range just read 0 and don't change even after resetting, filling up the fuel tank, etc. I unplugged it and blew into the connections, made sure all the wires are snug and everything looks fine. Car isn't giving any error codes. Anyone know why it might be doing this?