Is this normal for gas mileage?
 

I have an 05 Silverado Crew Cab 2wd 5.3l 3.73 gears and 275-55-20 tires that I bought 3 months ago and I get around 13-14 miles per gallon. Is this normal or should I be getting better mileage?

Thank you

Mike

I would imagine you should get better than that actually... might be time for a tune up

A crew cab with a 5.3 should be average around 16 mpg's at least. So a full tune up would help quite a bit.