I have the 1500 ext cab 2wd model that includes the 5.3 l v-8 with management. The truck gets 26 mpg on the highway! The average for the truck with over 6000 miles city/highway is now 20.6!
see full Chevrolet Silverado 1500 review
2007
4dr Crew Cab 5.5ft bed 315-horsepower 5.3L V8 4-speed automatic 4WD w/low range
Unlike other fuel economy surveys, TrueDelta's Real-World Gas Mileage Survey includes questions about how and
where a car was driven. So you can get an idea of the Chevrolet Silverado 1500's
real-world MPG based on how and where you drive a car.
What Our Members Are Saying about the Real Gas Mileage of the 2008 Chevrolet Silverado 1500
4-speed automatic RWD
4-speed automatic 4WD w/low range
4-speed automatic 4WD w/low range
4-speed automatic 4WD w/low range