Sous - 2004 5.3l 4l60E

Hi guys I’m new to this. I swapped in a 04 5.3l with a 4L60E in my 58 Chevy Apache. Starts and runs fine but my transmission will not transfer power when I shift it into rev or drive. Not sure what’s going on. Did I miss some connections or is my pcm program wrong? Any suggestions would help, thanks in advance.

test a b Solenoid first maybe reverse band or servo

I just installed it so I’m thinking it’s something I missed but I will manually send power to the solenoids individually just to make sure thx for the tip.