When you said you replaces everything, did you make sure you connected all the wires to the module? In my 84 c10 I have a black wire to the module, I made that simple mistake because I was working in a low light area and I could not see the black wire in the shade. Beat my head for about 6 hours trying to figure out why all the new parts would not work on mine. As soon as I took it all apart again I quickly saw what I missed. I connected it and BOOM! cruize time.
You wires might be a bit different, but worth looking at the wires to make sure they are connected.