miles per tank has crashed

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dpsaunders

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Mar 5, 2015
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Got a question:

I have a 2011 tahoe LTZ with about 70k miles on it. I am regular about changing all the fluids (usually doing it myself since I can't stand the costs for someone else to do it), swapped out air filter, etc.

Over the past few months, I have noticed that the computer is telling me that the miles per tank I am getting is about 80 miles less than it used to be. Any insight? Anything I should be doing to help it get it back up there? I know the MPG sucks anyways for the ride but any little change can help

thanks
 
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