1. Remove the cover from the head of the belt buckle mounting bolt.
2. Unscrew the bolt…
3. …and remove the seat belt buckle assembly with the bushing and bolt.
4. Remove the decorative cover of the upper belt mounting bolt.
5. Holding the belt, unscrew the bolt…
6. …and remove the upper belt bracket with bolt and bushing.
7. Remove the four screws securing the B-pillar trim and remove it.
[The article is taken from an online resource: vazbook]
8. Remove the belt inertia reel mounting bolt…
9. …and remove the coil from the middle pillar box.
10. Install the seat belt in the reverse order of removal.