2004 2 door Chevy Blazer. Just started having problems with the locks. I can lock the side doors with the remote but they will not lock when you hit the lock/unlock switch on the doors. The tailgate will not open at all . Have checked the fuses/relay and for loose connections with the switches and found nothing. Any thoughts?

 

Do you have power mirrors and do they work? There is a MIR/LOCK 3A fuse that may be bad. The switches are powered by a 3amp fuse but the remote works the relay through a 15amp fuse.