This issue was brought up in another tread and I didn't want to hijack it so.. On our first trip out with the new TV we went to the NC mountains...of course :B. Going up the 6-7 % grade was awesome...
Maybe a difference between OP's 2500, 68RFE with 3.42 compared to my truck, a 3500 DRW/Aisin with 4.10? We're both towing same type terrain ...Alluded to earlier by Transamz9