Starting in 2010 after Michigan economy tanked my dad and I went to pulling campers out of factories in Indiana. We have over 2.3 million miles on five GM diesel trucks.
Pictured is a white 2009 with 630 thousand miles. Had the motor replaced around 250k do to bad injector which my dad swears was bad from factory.
The Grey 2010, which was sold at 853k to the transport company I work for down in Indiana. Original motor, dpf filter was replaced around 470k and then whole emmisson delete after I sold it. The guy who drives it now used to drive Dodge. Loves this truck.
Next is the White 2013 I'm currently driving. 643k has had the whole emmisson system replaced once now. And at 595k the fuel injection pump was replaced. This newer truck runs cooler, has more power and better brakes compared to the older ones.
The Red one is a back up truck I bought new in 2013. Cab and chassis model dually has a 9 foot flatbed. 82k miles. Do to the extended length of the bed and the 40 gallon behind rear axle tank the truck does not handle bumper pull trailers as well as the other trucks.
Not pictured is my dad's current truck 2017. Up to 187k miles. Truck needs it's first front end alignment. This newer engine has even more power compared to the 2013s. Downside the hood is higher, lights are not as bright. The truck runs very quite compared to the older diesels, can't really even tell when the truck is working.