Pontiac G5 2009 Owner's Manual page 7

Seat Height Adjuster
The driver's seat height adjuster is located on the
outboard side of the seat.
To raise the seat, move the lever upward repeatedly
until the seat is at the desired height. To lower the seat,
move the lever downward repeatedly until the seat is
at the desired height.
Manual Lumbar
Turn the knob clockwise or counterclockwise to increase
or decrease the lumbar support.
On vehicles with this
feature, the knob is
located on the front of the
driver seat lower cushion
on the inboard side.
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