This will help with diagno.
Saturn vue doors wont lock.
2003 saturn vue rear liftgate won t open the easy part is you just need the latch for the liftgate.
2002 saturn vue rear passenger door will not lock it sounds like the the linkage actuator power locks or the mechanism has broken or become dislodged.
Rear driver door on a 2006 saturn vue will not open from the inside or out.
Read more door won t open from outside.
Check out the diagrams below please let us know what happens.
You will need to remove the door panel with the door closed which can be done easier if you remove the seats.
Locking devise seems to work and the door latch seems to be working door will not open seatbelt is not stuck in door.
On the inside trim you can remove screws that are by the door handle arm rest under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don t want to break them.
To lock the doors insert the key into the lock on the driver s door and rotate the key counterclockwise until you hear the doors lock.
You should be able to pull the liftgate trim off most of the way with the gate closed and try to manually actuate the latch to open the gate.