GMC 1999 Jimmy Owner's Manual page 9

Manual Lumbar Support
If you have this feature,
there will be a knob on the
outside of the driver and
passenger bucket seats.
Turn the knob
counterclockwise to
increase lumbar support and
clockwise to decrease
lumbar support.
Power Seats (If Equipped)
If you have this feature, there will be a control pad on
the outside of your seat.
Horizontal Control: Raise the front of the seat by
raising the forward edge of the button. Lower the front
of the seat by lowering the forward edge of the button.
Move the seat forward by moving the whole button
toward the front of the vehicle.
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