2001 remote instructions wont work

I have a 2001 blazer that i tried the remote program instructions on and i get no feedback from the truck. I did the put key in ign, hold unlock turn key on off on off but one i let go of the unlock button the doors dont lock and unlock. Is there a fuse someplace or some reason why the program wont work ?

Did you get the remote working? The only I see that you might have done wrong is you did not mention if you had all doors closed. They must be closed for it to work.