My '05 Chevy diesel has 225,000 on it. I hope to keep it for many years yet. It's been the most trouble free vehicle I've ever owned. If I don't get at least 300,000 out of it I'll be disappointed. My daily driver is a 202,000 mile '02 Jeep and the family car, a Buick, has 192,000 on it. I don't plan to get rid of any of them any time soon.
Your truck particularly is a keeper. The '07 classic is highly desirable and one of the best combinations of drive train and lack of emissions equipment. I'd keep up on the maintenance and drive it another 100,000 or more.
The new trucks can actually give a lot more trouble than the older ones. There's a lot more fragile things to break on a new diesel than on the one you have.
