Astra L4-1.8L (2009)
5. Remove the rear seat back cushion cover.
Remove the 9 clips.
6. Remove the left (1) and right (2) brackets.
Remove the 3 bolts.
7. Remove the upholstery covering all the way around.
8. Remove the head restraint guide sleeve.
Remove the 2 head restraint guide sleeves with a suitable tool.
9. Remove the seat belt panel.
Remove the cover.