I am thinking of purchasing a 2004 Silverado 2500HD with the Duramax 6.6 and Allison trans. I hear the mileage I should expect is about 16-17 city and
19-20 highway (65-70mph) not towing. Towing is a whole new story - I wouldn't expect much more that 11. Most of my driving will not be towing. When I do tow it is at least 250 miles at a clip.Are these non-towing numbers mileage numbers in the ball park? Any insight on this truck is appreciated.
Thanks Guys, Dom