Driving down the road with the cruise on at 110km the boost gauge fluctuates up and down between 10 psi and somewhere around 2psi. There is no change in rpm. I took the truck to the dealer as soon as I got it to town, they scanned it and tell me nothing is wrong no engine codes or lights. The truck still seems to have power which makes me think the gauge might have crapped out. Does anyone have any idea what is going on here? since the dealer dosent seem to be able to help.