Without a doubt the best truck I have ever owned. The more I drive it, the better I like it. Fuel ecomony is 18-24 highway . In town is 16-18. High headwind, tall hills and foot to the floor bring mileage way down. Not lacking power for anything I do. Quiet, smooth and comfortable. Normal conversation at any highway speed is not a problem.
Climate control - set the temp & forget. Duramax w/cruise control constant speed w/no shifting, no matter the hill. The economy at reasonable highway speeds really helps out. 20-24MPG under 70 & flat. I guess the main thing is the smooth, quiet, comfort. It really helps on the 16 hr drives I do.
A fold up console in the front seat for a bit more room instead of buckets. Up governor limit above 95MPH. Improve front seat adjustment with rear seat down. Provide lock for annoying accidental auto seat adjustment & seat heaters. Provide wiring for aux fuel tank or allow computer to accept add'l tank.
† Edmunds.com received the highest numerical score in the proprietary J.D. Power 2014 Third-Party Automotive Website Evaluation Study℠. Results based on responses from 3,381 responses, measuring 14 companies and measures third-party automotive website usefulness among new and used vehicle shoppers. Proprietary study results are based on experiences and perceptions of owners surveyed from January 2014. Your experiences may vary. Visit jdpower.com.