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Thread: gas milage???
02-11-2008, 02:39 PM #11
I've got a 2007 Suburban with the 5.3L V8. I'm getting 12.4 MPG in the city and around 15-17 MPG on the highway. Really sucks intown but what can you do. I've noticed you can buy "chips" on e-bay that will increase your horsepower and also increase your gas miliage. I've always wondered about them. I'm guessing they can't be too good for the engine. There's a reason the fuel settings are set the way they are. I'm afraid if I mess with it something else will break down.
I don't complain too much about my gas miliage. I knew going into the purchase I'd be paying more a month for gas. Something you have to live with I guess.
02-11-2008, 02:46 PM #12
2009 GMC Sierra Denali AWD
02-12-2008, 12:18 PM #13
ive got an 07 burban and im only getting 11-12 highway and around town, the guy at the dealership told me after the engine breaks in it will get better
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