Chevrolet 1993 S-10 Pickup Owner's Manual page 18

Seats & Safety Belts
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Manual Lumbar Adjustment
I
PO326
If you have this feature, there will be a knob with six settings on the outside
of
the driver and passenger bucket seats.
Turn the knob counter-clockwise to increase lumbar support and clockwise to
decrease lumbar support.
Fronf Seafback Latches
The front seatback folds forward to let people get into the back seat or reach
the storage area behind the seat. Your seatback will move back and forth
freely, unless you come to a sudden stop. Then it will lock in place.
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