I have a 2006 ram 1500 hemi and I have had this problem for a while now... For some reason when I go to start the truck and put it into drive or reverse the tran does not want to build pressure but if I put it in neutral and rev it and build pressure first its fine... but then after sitting for awhile once again does it..... has anyone else had this problem and.how did you fix it and how much did it cost..... the dealer said they.have.never seen this.