More Tranny Issues after Sol Replacement

I change solenoids thanks to the posts on here.Pretty simple.Just got to pay attention.I put kit 1355 in,Both solenoids w/bracket.All balls back in right place.However, now if I leave car in 3rd gear it will shift 1st 2nd 3rd,and can drive all day like that no problems.If I put it in overdrive though It will go 1st 2nd 3rd, then when its time to shift to OD , it goes back to 2nd like it did before I put solenoids in. I had it scanned it said solenoid A(before replacing them it scanned B).I took the pan back off and check the solenoid, wires and,plugs.Looked ok.But went ahead and checked all with volt ohm meter from solenoid to PCM(Light green wire). All checked good.Does any one have any ideas. Also,is OD mechanical or electric.Thanks for any input you can give(besides new tranny)LOL

Do you mean o/d or lock up? and yes these are all electronic controls then of course the hydraulics take over. Did it do this before?

When in o/d shifts through 1-2-3, then when it should shift to o/d goes back to 2nd and locks up there
Previous problem was shifting 1-2nd, and when it should of shifted 3rd it went back to 2nd (scan showed sol (B) bad)
Replaced both sol with bracket(Delco Kit 1355)
Now it goes 1-2-3rd back to 2nd and locks up there, if in o/d
If in 3rd, shifts 1-2- 3rd(can drive all day as long as I dont go to o/d)
New scan shows bad sol (A) this time
Took back apart tested new sol, wires,connectors,all the way back to Pcm (All tested good)
Had extra PCM (used) tried it today.Did same thing

You need a good diagnostic trouble tree for this condition, this could be a problem in the valve body itself, or the unit sees the problem and reverts to a default function thru the pcm.