Chevrolet 2003 Silverado 1500 Pickup Owner's Manual page 11

Power Seats
If your vehicle has power reclining seats, you can use
the vertical control to adjust the angle of the seatback.
Move the reclining front seatback rearward or forward
by moving the control toward the rear or the front of the
vehicle. See Reclining Seatbacks
on
page 1-5.
Power Lumbar
e
e
e
e
Raise or lower the front of the seat cushion by raising
or lowering the forward edge of the horizontal control.
Move the seat forward or rearward by moving the
whole horizontal control forward or rearward.
Raise or lower the rear of the seat cushion by raising
or lowering the rear edge of the horizontal control.
If your vehicle has this
feature, the four-way
control is located on the
outboard side of the seat.
To increase or decrease support, press and hold the
front
or
rear of the control. Let go of the control when the
lower seatback reaches the desired level of support.
You can also reshape the side wing area of the
lower seatback for more lateral support. To increase or
decrease support, press and hold the toc, or bottom
Moving the whole horizontal control up or down of the control.. Let go of the control when'the lower
raises or lowers the entire seat cushion.
seatback reaches the desired level of support.
1 -4