Oldsmobile 1999 Silhouette - Manual (Page 10)

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Manual Lumbar Control
The knob for the lumbar
control is located on the
side of the seat.
Turn this knob to adjust the support for the lower back.
Reclining Front Seatbacks
All front seats recline.
To adjust the seatback, turn
this knob. It is easier to
recline the seat if you lean
forward, taking your weight
off the seatback.