I'm posting this in the general tech questions since it may apply to other vehicles. I recently purchased a used 2005 Chevrolet K2500 Suburban. Trip A seems to have been used for around the town trips, to check fuel mileage, etc. The problem comes with Trip B vs. the odometer reading. Trip B shows approximately 137,000 yet the odometer only reads 86,000. How is it possible that Trip B reads more than the odometer? The 86,000 odometer reading corresponds to Carfax. The major service work for the vehicle was performed at a Chevrolet dealer and I think that feeds into Carfax. I also believe the seller to be an honest person. But I don't understand how Trip B can be higher than the odometer. Even if you never reset Trip B it should read the same as the odometer. Any ideas? Thanks for your comments. - - - Updated - - - I've been looking around on other car forums and several people have asked a similar question to mine. Most of them have subsequently determined there is a decimal place (for tenths of a mile) on the trip meter but not on the odometer. That doesn't seem to be true with mine although I could certainly be wrong. I looked closely at the Trip A and Trip B readout and I don't see a decimal point. Am I overlooking something?