NEW FAULT CODE 2215

[rgreen]

Just need some advice before I go spend my Xmas money on my truck. I know on the last post i did Rawze said i would need to replace the gear pump and lift pump but when I called the dealer that act like they never heard of a lift pump so may I was wondering if it was called a transfer pump part#4925092 &4925013 quickserve says i need 1 or do i need both of them. also should I change the pressure sensor. I am getting white smoke out the pipe and loss of PSI and here is my engine serial #79288044 also posted a picture. Thank you!!!!!