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2013 Chevrolet Suburban
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2005 Suburban z71 Flex Fuel

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Old May 22nd, 2023, 3:49 PM
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Default 2005 Suburban z71 Flex Fuel

I have a 2005 Suburban Z71 5.3l with Flex Fuel.
Used to get 19-21 mpg. After fuel pump went out, Changed fuel pump and flex fuel sensor. Now it's getting about 10-11.5
I now also am getting code P0449

Could tCoulee the reason my milage is waaaay down? It's not making sense to me.
Old May 22nd, 2023, 4:14 PM
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absolutely
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