Use a slim jim. A slim jim is a long, thin tool that can be used to bypass the locking mechanism in a van door. To use a slim jim, insert it into the door handle and push it down until it reaches the locking mechanism. Once the slim jim is in place, you can use it to turn the locking mechanism and open the door.
Use a coat hanger. If you don't have a slim jim, you can also use a coat hanger to open locked van doors. To do this, bend the coat hanger into a hook and insert it into the door handle. Once the hook is in place, you can use it to pull up on the locking mechanism and open the door.
Use a screwdriver. If you don't have a slim jim or a coat hanger, you can also use a screwdriver to open locked van doors. To do this, insert the screwdriver into the door handle and push down on the locking mechanism. Once the screwdriver is in place, you can use it to turn the locking mechanism and open the door.
If you are unable to open the locked van doors using any of these methods, you may need to call a locksmith. A locksmith will be able to open the doors without damaging the vehicle.