Door locks stuck in the lock position won't un lock
I had this happen with my '99 Lumina. It ended up draining my battery when I was on vacation for a week. So I unscrewed the part over the handle to get at it and unplugged the wiring because IT WILL drain your battery. I ended up having to replace the small lock part. Sorry I don't remember the cost; it was a couple years back. I'm now having the same problem with my drivers window button being jammed (luckily not up or down).
The lock part as in the actual piece the button is attached to
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