1994 olds Bravada keyless issues

Well, I dont know whats going on with this, put new batteries in my remote and programmed it but now does not work, tried to repeat process with no luck, is it a bad remote, or are these things funny like that. Its not really a big deal, am planning on adding remote start with keyless by winter anyways. But for now need help. Thanks

Do you have the correct remote? (was this remote working before with your Bravada?)

Well when I bought it, the remote didnt work, then I reprogrammed it and it did work for a day then stopped again.....dunno