installed pro start 2years ago in my 91 z-24 3.1 auto
worked great till 1 month ago, the lights would come on only ,when pressing the button, it was the fuse under the dash, ok for 3 weeks. Now doesnt work at all, lights dont even come on. Fues is ok, battery in remote ok. valet off/on is on and powred up,but nothing happens when remote is pressed.
Please help me out with this pro start CT 3100 thankyou very much Andrew.

My guess it's a bad unit. Those Prostart systems are not known for being long lasting.