2000 lumina door lock problems

Hello, I have a 2000 lumina 4 door and the door locks works about 50% of the time, I have used the key fob and it works the same way 50%, I opened the doors with the fob and went to town then tried to use it again and woudn't work even the door lock switch on the drivers door didn't do anything, Can anyone help. Thank you

i have the same problem with my 98 . sometime the doorlocks work sometimes it doesnt. Im not sure what the cause is, but i hope that someone can tell ius what it is.