Opel Automobile Owner's Manual page 35

Seat adjustment
9 Danger
Do not sit nearer than 25 cm (10
inches) from the steering wheel, to
permit safe airbag deployment.
9 Warning
Never adjust seats while driving as
they could move uncontrollably.
Seat positioning
Pull handle, slide seat, release
handle.
Seat backrests
Turn handwheel. Do not lean on
backrest when adjusting.
Seats, restraints
Seat height
Lever pumping motion
up = higher
down = lower
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