My car won't unlock. I can use key to unlock the drivers side, not other doors.

Hello, This is normally the case when a key has lost its charge, needs to be re-learned, or the general body main control module (GM5 module) has gone bad. The test is to see if the central locking button on the console locks and unlocks the doors. Since you stated that you are locked in the car sometimes, the GM5 module is likely at fault here. If you hardly ever drive the vehicle, or if the battery is new but uncharged, you will need to drive the vehicle with the key in the ignition for a while to recharge it. If the central locking button works 100% of the time, the key is the likely suspect.