2011 T660, ISX Cummings No accel.

So going throught the mountains of South Carolina, I found that while going down a steep incline, my truck instead of free wheeling after the governer kicked in, that my truc actualy started to slow down by itself. I just barley made it into to the rest area. I shut the truck off, got out took a look around, no lights on, no leakes, no nothing. So I got back in, started the truck, rev'd it up, which it did, and left the rest area. Went through the gears made it to 9th and same deal, except it decelerated much faster this time, with my foot to the floor. It's at a KW dealer, but just in case they tell me nothing is wrong I wanna see if anyone has heard or had the same same issue. Also, when i was standing outside the truck waiting to be towed, I could smell a burning type electric type smell.

 

Nope i know the difference between the 2 smells. Since they perofmred some recall, which was some update for the ecm, i haven't had the problems since...