door open, but locked

When I went out to get in my '99 Yukon today, the driver's door was slightly ajar. I quickly found out that the door lock was set in the locked position. It does not resond to key, remote or electronic buttons. I disconnected the battery and reconnected. Nothing.

Any tips?

why the hell are you posting this in a honda thread? you own a gmc... post in the gmc section! this isn't even the right section anyway!!

Yeah try the GMC or Chevy forums they will have a lot better chance at knowing what is wrong.