Why my Saturn Vue 2002 shuts off & starts back as I am driving down the road.

What is your question?

It shuts off and sometimes before I pull over to the side of the road, it starts itself back up. I believe that there is a security problem somewhere and if that is the case, how do I fix it. Also When doors are unlocked and locked using remote, it makes a loud humming noise. What can be done to fix. Passenger side doors will allow you to lift handles to open the door, but sometimes you have to try to open it 2 or 3 time to get the door to actuall open for you to get in or out