After the tank cover and shield are dropped, disconnect the harness from the pump.
Unlike Ohio Boss, I did not drop the tank.
I did not Remove 5 bolts and carefully drop tank down and remove line on top of tank.
I replaced the pump with the tank still installed.
Note, the location of the tab on the pump. The tank under this tab is engraved "Locator" to show the location of this tab. The tab points to the corner of the control module.
I needed a lock ring removal tool like this and 2ft. 1/2" breaker bar to release my lock ring.
Arrows showing all electrical/injector connections. Circles showing clips for the lines in the tank cover.
Last thing to do is install the access cover with the two plastic tabs and the single push fastener, and replace the spare tire heat shield with its three plastic fasteners.
Don't forget to reconnect your DEF fill line to the tank if you didn't immediately replace it after draining the tank.
I added one gallon of DEF, reconnected the negative battery cable. My CEL for P1050 was gone. I did not have to run any scan tool tests to reset or delete the CEL.
DEF Fluid level read "OK."
Because I disconnected the battery, I had to drive the truck for a couple minutes to relearn Tire Pressure.
Also, the display showed outside temperature of 32 degrees F in Florida, which was wrong. I learned that the truck has to be driven at least 20mph for five minutes without dropping below 20mph.
I drove the truck to pick up another 2.5 Gal DEF and added it to the tank. I will not top off the tank, if I don't have to.
I let the DEF sit overnight to soak the pump. The outside temperature was correct in the morning and "Possible Ice warning" was gone despite me not driving 20 mph for five minutes.