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#1
05-18-2010, 08:58 PM
Hummer Novice
Join Date: Apr 2010
Posts: 15
Terrible MPG
Ok ok, I know this is a very heavy vehicle, AWD, Big engine etc etc but how in the world am i averaging only 7.8 mpg?? I just had a tune-up, replaced a Catalytic converter, new alignment and new tires, I'm on stock wheels too. I know I should be averaging better mileage considering Im easy on the pedal. What would be the first things to check?
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