Just wondering if there's any programmers out yet for the new 5.3 flex fuel engines in GM's trucks??
We have a '07 Avalanche that we use E85 on almost every fill up ($2.89 a gal. here in northern Illinois ) but the mileage stays the same on the highway as it does in city driving. I'm thinking a computer tune up would do this thing wonders.
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GM 5.3 flex-fuel question
) but the mileage stays the same on the highway as it does in city driving. I'm thinking a computer tune up would do this thing wonders.
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