Power Lumbar Adjustment - Chevrolet 1996 Tahoe Owner's Manual

You can use the round center knob to move the seat
where you want it. To raise the seat, move the knob up.
To lower the seat, move the knob down. To move the
seat forward, move the knob toward the front of the
vehicle. To move the seat rearward, move the knob
toward the rear of the vehicle.
You can also raise and lower the front and rear of the
seat. To raise the front of the seat, move the'.front
lever up. To lower the front of the seat, move the front
lever down. To raise the rear of the seat, move the rear
lever up. To lower the rear of the seat, move the rear
lever down.
Power Lumbar Adjustment
If you have power lumbar
adjustment, you can
increase or decrease lumbar
support in an area of the
lower seatback.
To increase support, press and hold the front of the
rocker switch. Let go of the switch when the lower
seatback reaches the desired level of support.
To decrease support, press and hold the rear of the
rocker switch. Let go of the switch when the lower
seatback reaches the desired level of support.