[2eyefishclaw]

search the site for post on the trans range switch it can be disassembled cleaned and reassembled
as far as the APP sensor more than likely just needs an adjustment infor them that you would like it to be adjusted to 11% and clear the DTC that more ethan likely will take care of that if not then replace it, it is a very easy job but the dealer will have to adjust it to 11% SUGGESTION WALK INTO THE SHOP TALK TO ONE OF THE GUYS ASK IF THEY DO ANY SIDE WORK one of them may be willing to do that and I am willing to bet it would be less than the shop rate