2002 Cadillac Seville transmission

2002 Cadillac Seville had a P0741 code alone no other codes. C/E light on. Changed Tcc solenoid, tranny fluid, filter and gasket. Old solenoid was broken, fell apart in my hands when removing. Put all back together, filled with new tranny fluid, drove car around my yard, stopped put it in park, now it will not go into any gear, just revs when put into drive or reverse etc. Took everything apart again, drained fluid to double check my work all ok put back together still not going into gear. Trans shifted fine prior to replacing solenoid for C/E light. No slipping or anything. When car was running after putting everything together for second time trans fluid was not moving. Again car ran like a dream prior to this "fix" for the P0741 code. What would cause trans to stop going into gear? Solenoid really has nothing to do with gears only overdrive right? Please any help would be appreciated car is apart again, trans pan is off, fluid drained looking for answers. Thanks Only did this to pass inspection and get C/E light to go off