Hello. When I drive up from the front range (5400 ft) in Colorado to my house at 8400 ft the truck has consistently stalled in the same spot 4 times. It has a new fuel pump, sending unit and the tank has been cleaned so don’t think it’s a fuel issue. I did notice the evap canister is missing and the second hose from the sending unit runs up near the stock fuel pump and terminates. Could this be part of the problem?