The first thing we suggest checking is your sliding door’s fuse. Open the fuse compartment, remove the sliding door fuse, and swap in one of the other fuses of the same type. If the sliding door starts working again, your problem is solved! You just need to go buy a new fuse and put it in.
Another common issue is dirty door tracks. If you can manually open the door, check the sliding door tracks for gunk and dirt. Over time, this kind of build-up can stop your power sliding door from functioning properly. Give the tracks a good cleaning and lubricate them, and try your power sliding door again.