Our's had all the problems mentioned above. No power (like the turbo was not making boost).
It idled at different rpms and would surge at times which would cause the truck to surge forward while at a stop light (very dangerous).
The rear main seal went out at 1800 miles.
the turbo had to be replaced at 2500 miles.
the computer had to be re-flashed 6 times.
total loss of power twice while driving on the freeway here in San Diego (again very dangerous).
The dvd player had to be replaced.
This is by far the biggest POS I have ever owned.
I had a 99 F-250 with a 7.3 and a 02 F-350 with a 7.3. Both were great trucks.
The GM at the dealership we were working with even said that in his opinion the 6.0 was a POS. He said it has cost him sales because people are afraid to by them. He sent me to their GM dealer to look at the GMC's.