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I believe GM rated the vehicle at 14 MPG city and 18 MPG highway for 4WD. I have 135,000 miles on my 2000 Z71 and get around 15.5 MPG driving back and forth to work. If I set the cruise control at 63 MPH and leave it alone, I can still get 19.5 MPG.

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16y ago

What else can I help you with?