Sierras do it too. If you watch the interior door locks/release handles (if they move) you'll notice one, usually the passenger one, doesn't actuate properly. My old Sierra did this, but I never sorted it as it only happened once in a blue moon.

It comes from either the lock siezing from lack of use. Clean up the locks and check the operating cables are free and don't have any broken retaining clips. You may notice that the other door lock is 'stiffer' to turn than the one you normally use.