GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

2008 crewcab z71

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Old Dec 8, 2010 | 07:19 AM
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Staging Lane
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From: south TeXz
Default 2008 crewcab z71

Its a 5.3 with flowmaster cat back. What do u guys average gas mileage on the hwy?
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