This is what the dealer did to mine over 13,000 miles. Many trips to dealer.
1- solenoid switch
2- valve body assembly
3- powertrain control module
4- tranduce-pressure sensor
5- had for five days, could not duplicate
6- pump kit & filters
So far so good.
It's my truck and I want it the way I want it!
IF YOU DON'T HAVE TIME TO DO IT RIGHT, WHEN WILL YOU FIND TIME TO DO IT OVER??