Lower Spray Arm WD22X10055

First off on this model, if one of the telescopic spray arm weld assembly comes out it is NOT repairable you have to replace the whole part.
The assembly on my model number was simple you do NOT have to PRY anything out...(I broke the base spray arm trying to shove a screw driver into the Spray arm weld.(You could try this but chances are the plastic will break and I recommend replacing both parts why not???.)
There are two bolts on the sump protector basket that has to be removed first. They are 1/4 inch.
Once that cover is free there is a bolt (also 1/4 inch) on the base spray arm it is easy to see but hard to get to I used a very thin open ended wrench
1/3 turn at a time till I could get the socket on it.
Next there is a rubber gromet like thingy that just pulls loose remove it also.
Next take the spanner wrench (I used one with a rubber belt) wrap around base spray arm and turn counter clockwise it just unscrews.

reassembly is simple but this is GE so I inspected the sump and found one medal impeller and one black screw at the bottom!!!!!
The impeller is threaded and just screws onto the shaft (look at the diagrams on this web site to see placement.)
Throw the screw away it does nothing except if left there jacks up the impeller I am guessing it fell out of some factory workers pocket.
If after you put all the parts back in and the washer does not drain check your reassembly if you don't line the parts up just right the unit will not drain.
Don't forget the rubber grommet (not sure what it does but it's easy to replace after all is assembled) also there is a metal washer that is inbetween the base spray arm and the spray arm weld put it back before you click those two parts together it protect the plastic from wearing it is a bearing!!
If you found this site you are doing really good This site had all the diagrams I was looking for I love you guys you so rock!!! I wish the diagrams were bigger but they were adequate. GE 's site was no help and I doubt I will ever buy another one from them.
Good luck just remember look at the parts diagrams before attempting the repair.

There's a video on youtube from this site on how to install spray arm and base. Great video. Great price

The part came in as ordered. After removing the dish rack, I loosened three 1/4" screws (two on the strainer basket and one at the base of the spray arm. I had to slide the rubber hose down and back to disconnect the base which I did by turning counter clockwise. The new one went in by reversing what I just described. Other than two of the screws being difficult to reach, everything worked fine.Thanks for your site.