[buzzinhalfdozen]

I see quite a few Duramuts in our shop (chevy dealer) mostly small issues very few major problems. The most problems we see are usually caused by "power up" software or controllers. Please be aware that if you add one of these to your Chevy diesel and you have a failure GM is aware of what is causing them and will deny any Warranty repairs. Even if you have a programmable that you can switch back and forth to stock setting it leaves a trace in the software that can be detected by GM. Just want to give you guys a HEADS UP so you don't get denied. Personally I pull with a 7.3 Power stroke never had a moments trouble with it, it will pull anything you hook to it and delivers good mileage, obviously the 6.0 and 6.4 has had issues.The Cummins I have no personal experience with however the guys I know that have them LOVE the Engines don't have alot to say about the trucks themselves though. You have to remember Cummins was building diesels before GM or Ford and have much more experience doing so. Joe