Power Seats; Manual Lumbar - GMC 2003 Sonoma Owner's Manual

Power Seats

If your vehicle has this feature, there will be a control on
the outboard side of the front seat(s).
Horizontal Control: Raise or lower the front of the seat
by raising or lowering the forward edge of the control.
Raise or lower the rear of the seat by raising or lowering
the rear edge of the control. Move the seat forward or
rearward by moving the whole control toward the front or
the rear of the vehicle.
Moving the whole control up or down raises or lowers
the whole seat.
1-4
Vertical Control: Move the reclining front seatback
forward or rearward by moving the control toward
the front or rear of the vehicle.

Manual Lumbar

Turn the knob counterclockwise to increase lumbar
support and clockwise to decrease lumbar support.
If your vehicle has this
feature, there will be a
knob located on the
outboard side of the
driver's seat.