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Extreme poor gas mileage

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Old Aug 29, 2023 | 5:35 PM
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Jldije's Avatar
Jldije
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Default Extreme poor gas mileage
My 2008 5.3, 55,000 miles silverado decreased the gas mileage driving the same distance from one day to the next day. What do i check to fix?
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Old Aug 29, 2023 | 7:29 PM
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mountainmanjoe
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Have you tried running a diagnostic scan?
Also, how did you come to this conclusion?
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