Hi, I have a 03 Magna.
Every time I go to unlock the car it will lock back up and will unlock and lock by itself. Which makes putting my two children in the car difficult. It dosen't matter if I use the key or the remote it still plays up. Any ideas on whats going on? and how to fix it?

As repeatedly posted before - i.e. use the search function first please.
Had a similar problem on a KS Verada touring wagon.

Inside each lock actuator there is a quadrant that flips from side to side.
Inside the housing, on each side, there is a small rubber pad so the quadrant does not smash onto the outer housing and overtravel the associated microswitch
One pad had disintegrated so the quadrant then over travelled, this means that the attached microswitch does not work correctly. This is the cause of the system cycling problem.
This meant that it then just rapidly cycled the locking system from unlock to lock.

The difficult bit is working out which actuator is the culprit.
Start with the drivers door then the front passenger one.
I opened up the actuator and glued a piece of rubber in place of the pad.
This fixed the problem.

Hope that this helps.
Gerry