The latest on the Silverado, though.....I couldn't get the door unlocked from the outside on the driver side door.
Key went in - but wouldn't turn either way. I figured I would pull off the inner door panel and see if a clip came loose or broke.
A few days went by with me using the passenger side door to unlock the driver side door from the inside (I keep my outside vehicles locked at night here) - all of a sudden.....the lock starts working again.
No telling if the issue will return but for now - one less repair matter to deal with!