How to remove the back seat - 2002 Lincoln LS

there are usually 2 little buttons, 1 on each side, underneath the seat in the front. push and pull up

Remove the seat cushion retaining bolts, detach the seat cushion and remove it up and out from the vehicle.

Remove the rear seat back retaining bolts at the bottom of the seat back. Pull up then out to disengage the upper frame from the hangers and remove seat back from the vehicle.

Installation is the reverse of removal.

Courtesy: Haynes GM repair Manual #38025. You can probably find a copy of it on Amazon or eBay cheap

PUSH IN CENTER FRONT EDGE CUSHION TO DISENGAGE PART OF SEATS WIRE FRAME FROM CLIPS.WITH CLIPS UNHOOKED LIFT UP AND REMOVE SEAT.IF REAR SEAT NOT HELD IN PLACE WITH CLIPS. LIFT UP THE REAR SEAT CUSHION AND PIVOT IT FORWARD. DETACH THE RETAINING BOLTS AT THE LOWER EDGE OF THE SEAT BACK AND IF NECESSARY REMOVE THE SEAT BELT ANCHOR BOLTS.LIFT UP ON SEAT BACK REMOVE IT..

I searched the owner's manual and there was no mention of folding the rear seats down. If you don't have a manual, you can get one here: http://www.extendedgmwarranty.com/owners-manual/buick/1999-Buick-Century.pdf

You can remove the seats following the instructions below from autozone.com.
Rear Seats
SEAT CUSHION

Fig. Typical W-Body rear seat cushion removal

1. Locate and remove the small bolts at the front lower edge of the seat cushion.
2. Pull the tabs on the rear cushion retainers.
3. Remove the seat cushion by lifting up and pulling out of the retainer.
4. Installation is the reverse of the removal procedure. Make sure the retainer tabs are snapped into place. Tighten the bolts to 18 ft. lbs. (25 Nm).

SEAT BACK

Fig. Typical W-Body rear seat back removal

1. Remove the seat cushion as described above.
2. Remove the anchor nuts securing the rear seat retainer at the bottom of the seat back.
3. Grasp the bottom of the seat back and swing upward to disengage the offsets on the upper frame bar from the hangers.
4. Lift the seat back upwards to remove from the vehicle.
5. Installation is the reverse of the removal process. Make sure the hooks on the seat back are properly installed to the hangers. Tighten the anchor nuts to 89 inch lbs. (10 Nm).

Head Restraints Removal

1. Unscrew front seat head rest guide rod retainers (610A18) .
   

1. Pull up on front seat back head restraint (611A08) . Compress foam in area of front seat head rest guide rod sleeves (610A16) .
   

1. Remove front seat back head restraint positioning springs. Pull front seat back head restraint up and out.
   

Installation

1. Slide front seat head rest guide rod retainers onto front seat back head restraint posts.
   

1. Compress foam in front seat head rest guide rod sleeve area. Install positioning springs on front seat head rest guide rod sleeves .
   

1. Insert front seat back head restraint posts (notches on posts facing rearward) into front seat head rest guide rod sleeves and push down to engage positioning spring.
   

1. NOTE: Front seat back head restraint must operate smoothly throughout its range of travel, must remain in any fixed position, and must not be freely removable from the seat back. If any of these conditions are not met, check for proper installation of positioning spring onto front seat head rest guide rod sleeve .
   
   Tighten front seat head rest guide rod retainers onto front seat head rest guide rod sleeves .
   

1. Adjust front seat back head restraint by applying hand pressure, either up or down, to center area of front seat back head restraint .
   

please rate highly if this is what you need

Section 01-10: Seats and Tracks 1994 Mustang. Workshop Manual
REMOVAL AND INSTALLATION Seat Cushion, Rear Removal and Installation

1. Release pin from locks by pressing release button under rear seat cushion.

1. Pull rear safety belt and buckle (60044) through openings in rear seat cushion pad and frame (600A88) and remove rear seat cushion pad and frame .

1. To install, reverse Removal procedure.
   

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Section 01-10: Seats and Tracks 1994 Mustang. Workshop Manual
REMOVAL AND INSTALLATION Seat Back, Rear Sedan
Removal

1. Remove rear seat cushion as outlined.

1. Remove rear seat bolster. Refer to Section 01-05 .

1. Remove rear seat bolster mounting bolts. Remove bolster assembly.
2. Remove four seat back to package tray retaining bolts.

1. Remove seat back.

1. To install, reverse Removal procedure.

it is not designed to be removed. It is designed to slide back and forth as needed.

Section 01-10: Seats and Tracks 1998 Villager Workshop Manual
REMOVAL AND INSTALLATION Seat, Rear Bench
Removal

1. Remove the center seat(s) if equipped. Refer to the procedure in this section.
   

1. Slide the bench seat forward to the center row seating position.
   

1. Use a flat-blade screwdriver to remove the cover caps from the front of the rear seat cushion latch cover.
   
   
   
   
   

1. Remove the two rear seat bolts from the front of the rear seat cushion latch cover.
   
   
   
   
   

1. Lift the rear seat cushion floor cover on the back of the rear bench seat and remove the two inboard rear seat bolts and the two outboard rear seat bolts.
   
   
   
   
   

1. Remove the bench seat from the vehicle through the body side door opening.
   

I imagine you're talking about the seat 'BOTTOM'? two 12mm bolts in between the seat back and bottom (at the seam where they meet). remove them and you can remove the seat bottom). Afterward, you will detect the fasteners holding the seat backs in place. If you remove those, the seat backs will come out.

fold top seat down first
then there is seat clip push seat forward with upward motion
this releases back floor clamps once released pull seat back this releases the front clamps then pull seat out of back door