In this video i repair the side door on my 2009 chevy 2500 work van.
Sliding door on 2014 chevy van not opening.
It would not move either way.
Check the child safety lock if the problem door is a rear door.
The rear door lock actuator can fail in two ways electrically or mechanically.
1999 gm chevy astro van sliding door got stuck open.
Dodge chrysler caravan town and country sliding door will not open or close get this checked and done first.
If it fails mechanically like the gear stripping internally it will have a grinding or whirring noise.
If it fails electrically you will not hear the actuator try to operate when you try to lock unlock the door.
The front lower bracket was wedged under the guide channel.