"I bought my 3500 new in 2006. I love this truck. I haul a 35ft horse trailer all over the country. I out pull f350, f450, f550, and get 3 to 4 more miles per gallon. I did install a after market chip. It makes a big difference. I have 100,000 miles on this truck with no problems. 80,000 of these miles were pulling a trailer. I will buy Chevrolet when the time comes......."