Astra L4-1.8L (2009)
5. Remove the rear seat back cushion cover.
Remove the 9 clips (l).
6. Remove the right bracket.
Remove the 2 bolts (1) (ll).
7. Remove the left bracket.
Remove the bolts (2) (III).
8. Remove upholstery covering all the way around.
9. Remove the head restraint guide sleeve.
Remove the 2 head restraint guide sleeves with the appropriate tool.