Last week, I was filling-up at the Flying-J, here in Phoenix, & ran across a guy with a Duramax ('01 or '02) with a huge trailer. Since I love "talking diesels" I asked him how he liked his truck?
Turns out that he tows commercially, out of Phoenix, & had over 600,000 miles on his unit. The engine has never been touched & has some Banks performance goodies, on it. The Allison was replaced by GM at about 450,000 miles. There was nothing wrong with the trans but, GM wanted to see what the inside of the trans. & transfercase looked like with heavy towing miles. He did not want to give up the trans. because it had been trouble-free. So, GM offered a new transmission warranty on a brand new trans & transfercase. He took the deal.
I'm not trying to "promote" the Duramax/Allison but, I thought it was interesting that this guy was having good luck with his.
Personally, I wish ALL the trucks had good engine/trans. combinations. That would create more competition in the industry & we, probably, would end up with better trucks, in the long run. A variety of quality vehicles would keep the industry on their toes.
BTW, I have two Dodge/Cummins products. However, it's good to know that the GM product seems to be pretty good, also.
Joe F. (Buffalo)