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  1. Fuel Economy
  2. GM DIC Accuracy
  3. GMC Sierra Fuel Mileage Results
  4. Volt 230mpg Claims
  5. 2007 GMC Sierra fuel mileage update.
  6. Difference in the fuel
  7. Oxygen Sensors ?
  8. MPG Drop Drastically ? **Updated See Post #72**
  9. 5.3 with 4.10s
  10. Fuel Level Question???
  11. Surprised the heck out of me! MPG wise.
  12. 10% Ethanol?
  13. 50.58 mpg
  14. How MUCH is gas in your area?
  15. GM pickups to adopt active grille louvers for fuel economy?
  16. Gas Saving Devices; Ummm.....Money Talks?