If you can open all doors but one get into the van and try to open the malfunctioning door by using the internal handle.
How to fix a stuck sliding van door.
This simple diy trick may solve your issues.
However if the rollers are worn cracked or bent remove them photo 4 and replace them with a new pair.
Dirty or blocked tracks.
Your sliding door operates on a track to open and close.
Check your door s alignment.
Your door is old and worn out.
Open and close the door a few times to completely spread the oil.
If the door is still sticking try using a screwdriver to adjust the height of the rollers.
In addition to cleaning and lubricating sliding door tracks you want to lubricate the door lock.
If this is successful try locking and unlocking the doors a few times to check whether the problem is solved or continues to reoccur.
Find the cause of your sticking sliding door.
Most sliding doors manage to get knocked off kilter at one point or another.
Sometimes this can free the mechanism if it is just stuck in position.
Apply a lubricant to both upper and lower tracks to keep the door hardware clean and operating freely.
If the sliding door on your van is hard to open and close or if it feels like the door of your van is stuck when you open and close it you can fix the stuck door by oiling the rollers.
Each time you vacuum your floors use a small brush attachment or cordless vacuum to clean the sliding door tracks.
If the rollers or sliding glass door wheels are full of dirt and debris give them a good cleaning and a few drops of lubricant and see if they spin freely.
To realign your doorin the tracks at the top and bottom of the frame remove the door from the track and reinsert it.