I am driving my second Cummings Dodge with 5 speed manual and have never had a problem with Tranny or clutch. The latest one had a crank seal leak but thats the only problem in like 160,000 miles of driving and towing.

I have been hearing about problems with the chevy but its been the tranny. Its funny, Chevy sells ya a Duramax for 38,000 bucks and the first thing you see when you look at it from the side is the cheap ass emergancy brake cable running along the frame on the outside... the frame that is covered with big white stickers of some sort.