I had an '02 Duramax 2500 that ran well and was reliable. I had a Van Aiken chip that was detachable for service and never abused my truck always doing the regular maintenance. One Sunday while running through the Kentucky mountains I encountered low oil pressure (I am a guage reader). I was traveling at a steady 70mph with a full tank of fuel and no other visable issues w/otherwise normal guage readings. I pulled over to the nearest rest stop and smelled a strong odor of raw diesel. Nearest dealer was 80 miles south. So with no cell service and in the mid. of nowhere, I had to head out. When I finally arrived at another stop, I had no oil pressure and realized the truck was somehow losing fuel rapidly (my fuel guage was near half). I had the truck towed to a diesel shop in GA who told me that the crankcase was FILLED with diesel fuel and had NO oil left! Chevy fixed what it called a service bulletin item, a broken fuel injector, and the truck was out the door. The independent diesel shop said I should definately get a new motor (I agreed) as I knew my bearings took a hit running without any oil in them. I called GM and asked for at least an extension of my powertrain wrnty. to about 150k miles. and they wouldn't go for it, offering me a free oil change instead! I spoke to a manager who told me the diesel 'acted as a lubricant to the motor in the absence of oil'. I told him he was delerious (I was a mechanic as a teenager) and asked him to put that in writing. He declined. They were NOT going to do anything for me and I knew that motor was doomed somewhere in the future. I read where a kid with a Duramax blew his motor and had to fight GM for a year, spending thousands on legal fees. He hired an engineer who agreed with the kid and GM eventually gave him his money back after a year or so(Read it in Motor Trend). I traded the truck in even though I owned it outright (no payments) and it had good oil pressure/no immediate problems. GM extended the warranty on the injectors only to 100k, but that did little for the rest of a motor that ran on diesel in it's crankcase for over 100 miles in the summer heat. I believe the Duramax is a very good engine with only the injectors being faulty units (produced possibly in Germany by Bosch). I wasn't prepared to fight that huge company but was none the less crushed as I was a former chevy PU owner (had a new '98 2500 before the diesel), and a loyal customer. Their product is better than Ford's fateful former "new" 6.0 diesel, (I heard their horror stories about their vaulted F250 with Ford offering $2500 to owners to buy a new 6.4 Liter diesel), but GM's powertrain warranty is as useful as the paper it's printed on. Just wanted to pass this on as a caution to those who might be drawn in by the new 100k warranty. Read ALL the fine print.