How do you fix a driver's side electric lock that only unlocks about half way on a 1989 Chevy Cavalier with keyless entry that uses a remote only?

I would remove the inner door panel; then you can watch the problem; chances are you have binding linkage or a weak actuator motor. I hope this helps you. Mark on second gen cavaliers, they need a double pulse to unlock correctly, find your manual for keyless entry and reprogram it for sual pulse instead of single.