Question about 2007 GMC Sierra 1500
I have a 2007 GMC 1500 5.3 V8. Once I got 45,000 Miles gas milage went from 19MPG to 17 MPG. Engine runs good no miss, good idle.
Ever tuned it up? sounds like its due. plugs, wires, fuel filter (if equipped), PCV, and an intake system cleaning should restore your fuel economy to where you want it.
Posted on Dec 11, 2009
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Posted on Jan 02, 2017
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