I would stay away from a 2004 with the 6.0 diesel. There are a lot of documented problems with that engine. It wasn't until the 2006 model year that changes were made to the engine that made it more reliable.
The main problem with that engine was the EGR carbon deposit issue. Other problems were the the unreliable variable-vane turbocharger solenoid, defective Exhaust Back Pressure (EBP) sensor/connector, numerous PCM (Powetrain Control Module) recalibrations, fuel injector harness chafing/crushing and other driveability and QC issues.
Bob and Joyce
2013 CC Silverback 29RL
2010 Ford F250 XL Crew Cab 6.4 liter diesel
ATU Local 788
This is a good summary of the good and bad for GM, Ford and Dodge. I used this to narrow my search to a 2005 or 2006 GM. If a diesel has been properly taken care of 125k is not that much in terms of miles.
If your looking for a tow vehicle, we still have our 2005 GMC 2500 4 x 4 crew cab for sale. i don't know if its still in the for sale area. It's loaded with the durmax engine. And it only has 31000 miles on it. We towed a Montana 5th wheel for two years before we bought the motor home. We added electric brakes, air bags in the rear, a 45 gal tank, and is still under an extended warranty. It has been garage kept and everything is orriginal on it
Ken and Velda
2008 Georgetown XL 378
2010 Ford Escape Limited
Good Choice - I also own a Dodge - not a diesel but I can tell you as long as it is well taken care of it will give you many years of service.
Besides you will see alot of stickers that say "Would Rather be cummin then strokin"
__________________ 2011 Rockwood Mini Lite 2306 - Matt
2004 Dodge Ram 1500 Qaud Cab 4x4 with 35" tires and 3.92 gears, Dynatech Longtube Headers & Fabtech 6" lift + Superchips with shift Tuning Nights Camped 2011 (37) - 2012 (16)-2013 (2) -2014 (5) -2015(0) USMC 91 - 95 - F/A-18 Aviation Ordnance