Mpg, and oil life.. He's talking about the DIC - digital information center.
Sounds like you have a bulb loose, or burnt out. There's a few threads on here about removing the DIC and replacing the bulbs. Could also be a connector, either way if you pull the dash trim and remove the DIC you'll get it figured out.
Edit, check this link:
http://www.clubgp.com/newforum/tm.as...heck=675549179