I have a 2004 Chevy Silverado with power door locks. I bought the truck second hand and I didn't get any remotes from him. I bought a remote on ebay and I'm going through the process to program the remotes and it confirms the programming before I can push the lock and unlock buttons to program the remote. I'm wondering if the truck is set up for keyless entry, is there a way to tell? I assume it is because the truck is able to go into programming mode. Any help would be great!!!