Chevrolet 1999 Monte Carlo Owner's Manual page 12

Driver's Side Power Seat (Option)
FRONT (A): Raise the front of the seat by holding the
switch up. Hold the switch down to lower the front of
the seat.
CENTER (B): Move the seat forward or backward by
holding the control to the front or to the back. Raise or
lower the seat by holding the control up or down.
REAR (C): Raise the rear of the seat by holding the
switch up. Hold the switch down to lower the rear of
the seat.
1-4
Reclining Front Seatbacks
Lift the lever to release the seatback, then move the
seatback to where you want it. Release the lever to lock
the seatback into place. Pull up on the lever without
pushing on the seatback and the seatback will
move forward.
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