On every trip I have been on with my 98' Chevy, I have been very frustrated with it's towing. On our last trip, I had a hard time keeping up with the pack from st louis onto Flat Nasty.
I am not trying to do what the cool guys are doing, I don't care about fuel mileage, I don't care about cost to get one over a gasser. I just want to set the cruise and drive, tow 70 mph and not have to loss 10mph going up a slight hill.
I have problems with my 4L80E jumping into 2nd gear on pretty big hills and ppl with the 6.0L have the same issues from what I have read.