I recently bought an 04 Impala. The Driver Information Center (DIC) is very innacurate. It is off by five mpg and the fuel used portion is off by about 3 gallons.

Does anybody else have this problem? Chevrolet says that the DIC is calibrated correctly. I can't believe this is acceptable. I have had a buick and a caddilac and both were spot on with the DIC informatin.

Does anybody know of any tsb's that Chevy has put out to rectify this problem?

Any suggestions? Help!?

jontao