i have a 04 F350 Harley Davidson edition with the 6.0. I just put a edge programmer in it and it works great except when i have it in level 5 (which is the highest setting) i get real bad slipping in my tranny. I have tried it with overdrive off and even in the tow/haul mode. Any suggestions...

I have an 04 F350 Harley Davidson ed with the 6.0L and the four wheel drive wont stay engaged. It will kick in for a couple of seconds and kicks out. its never done this before any help?