05 LLY w/edge. when the tow/haul is activated i get turbo bark between setting 3 & 5(edge). Not quite at full throttle. With tow/haul off it runs great. I didn't realize until a week ago. after previously towing realizing my tranny had to learn with the tow on. So I am driving around with the tow on for the tranny. And thats when it did it. I forgot the truck was unloaded. Does this make since or am I crazy.
Thanks in advance,

Mike

I'm not up on the co-pilot settings but if it set in race position it should shift fast enough to bark the turbo.
I've heard other trucks doing it at Muncie last year on the drag strip.

I was on a lower level (copilot). I didn't think of that though. I was on a level 2 with co-pilot.

Thanks,

Mike