For you guys that like the cummins, what mods are you doing to them to get them to run? We have two cummins at work that are the biggest dogs Ive ever driven in. Nobody wants to drive them. At idle they'll pull your house, but at highway cruising rpms with a decent load, I mean they are scary slow. If you want to pass you better have about 5 miles of clear straight away or forget about it. Im not a big diesel guy, its not a chevy vs dodge thing, thats just been my real world experience with them and why I dont understand why so many people swear by them.
As for the duramax, they are awesome to drive, no question about it. Just tough for me to justify the cost unless you do a lot of heavy pulling.
If you're a real cheapskate, do what I did and pick up an early 90's 6.5 turbo diesel for about $3-4 grand. I honestly love mine, not one problem yet and gets the job done without having to sign your life away to the bank.
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2006 2500HD, RCLB, 4X4
6.0, 4L80e, 14 bolt