Replace rear speaker

Remove the door opening weather-strip. Refer to Door Opening Weatherstrip Replacement in Doors.
Remove side sill trim plate. Refer to Door Sill Plate Replacement in Interior Trim.
Remove the lower quarter panel trim. Refer to Rear Quarter Trim Panel Replacement in Interior Trim.
Remove the center pillar upper trim panel. Refer to Center Pillar Upper Trim Panel Replacement in Interior Trim.
Remove the quarter upper trim panel. Refer to Rear Quarter Upper Trim Panel Replacement in Interior Trim.
Remove the center pillar outer applique. Refer to Center Pillar Applique Replacement in Exterior Trim.
Remove the roof drip molding. Refer to Body Side Roof Drip Molding Replacement in Exterior Trim.

Important: It is necessary to use new nuts when reinstalling the quarter window.
Remove the nine quarter window nuts (1), securing the quarter window assembly (2) to the body opening.
Caution: When working with any type of glass or sheet metal with exposed or rough edges, wear approved safety glasses and gloves in order to reduce the chance of personal injury.
Important: When removing the quarter window from the body opening make sure that the attaching pins are clear of the outer body.
Remove the quarter window (2) from the body opening.

Remove the rear seat cushion. Refer to Rear Seat Cushion Replacement in Seats.
Remove the rear seat back. Refer to Rear Seat Back Replacement in Seats.
Remove the door sill plate. Refer to Door Sill Plate Replacement .

Remove the 3 quarter trim panel retaining screws (1).
Starting at the lower edge of the trim panel and moving alternately clockwise and counterclockwise, pull outward on the trim panel to disengage the eight rear quarter trim panel attaching clips (2).
Remove the quarter trim panel from the vehicle.
Remove the 4 radio speaker grille speed clips (1), securing the speaker grille.
Remove the speaker grille (2).
Remove the rear quarter trim panel insulator (1), from the back of the quarter trim assembly (2).
Remove 7 rear quarter trim panel armrest retaining clips (1).
Remove 7 rear quarter trim panel armrest retaining nuts (2).
Gently pry the quarter trim panel armrest insert assembly (3), away from the rear quarter trim panel and remove.

You mite look for a video on youtube !

Section 01-09: Mirrors, Rear View 1999 Taurus/Sable Workshop Manual REMOVAL AND INSTALLATION Procedure revision date: 06/25/1998 Mirror, Power-Outside Rear View Removal

1. Disconnect battery ground cable (14301).
   

1. Remove front door trim panel (23942). Refer to Section 01-05.
   

1. Remove radio speaker grille from cover assembly by squeezing or pinching between thumb and index finger.
   

1. Remove two screws from cover assembly.
   

1. Disconnect outside rearview mirror wiring connector (C515-LH; C615-RH). Remove wiring guides as necessary.
   

1. Remove three outside rear view mirror retaining nuts. Remove outside rear view mirror (17682) while guiding wiring and connector through hole in door.
   

Item Part Number Description 1 17682 Outside Rear View Mirror 2 N621906-S36 Nut (3 Req'd) 3 F8DB-17D699-
AAW Cover Assembly Rear Substrate-LH 3 F8DB-17D698-
AAW Cover Assembly Rear Substrate-RH 4 N808968 Screw 5 F8DB-18B984-
AAW Speaker Grille-Standard (No Badge)-LH 5 F8DB-18985-
AAW Speaker Grille-Standard (No Badge)-RH 5 F8DB-18K901-
BAW Speaker Grille-Mach-LH 5 F8DB-18978-
BAW Speaker Grille-Mach-RH 5 F8DB-238A35-
AAW Speaker Grille-Blank (No Speaker)-LH 5 F8DB-238A34-
AAW Speaker Grille-Blank (No Speaker)-RH A - Tighten to 6-8 Nm (54-70 lb-in) ------------------
Trim Panel, Door Front
Removal

1. Remove cover behind inside door handle.
   

1. Remove screw from bottom of pull cup retaining front door trim panel to front door (20124).
   

1. Remove three screws retaining front door trim panel to front door.
   

1. NOTE: Do not attempt to remove more than one pushpin at a time.
   
   Using Rotunda Windshield and Molding Trim Removal Kit 107-R0401 or equivalent, remove the door trim panel by pulling one door trim panel pushpin at a time from the inner door skin.
   

1. Disconnect electrical connectors as necessary. Refer to Section 01-14A.
   

Installation

1. Follow removal procedure in reverse order.
   

1. Replace all pushpins with new pushpins (N808994-S).
   

Front Door Trim Panel

To remove that whole lid you need to remove the rear seat. the bottom half just pulls up and out and the back side pieces have two bolts down low, one on each side, then you can remove the rear seat back and that lid should be held in place with either bolts or push pins. The lid should come out and give you access to replace the speaker grills.

Remove the rear seat, pull up and out on the bottom half, remove the sides of the back- one bolt on bottom of each side,remove the backrest, then remove the whole deck lid with speaker grills in it , then you can replace the speaker grills.

Remove entire rear seat assembly
Pry out the rear portion of the seat belt trim bezel.
Partialy remove the rear parcel shelf trim panel, slide it down and out of the way.
Remove the screws and detach the speakers.
Installation is reverse of removal, making sure that wire connectors face toward the center of the vehicle

NO' YOU DONT NEED TO REMOVE THE ENTIRE DOOR PANEL, TO REPLACE SPEAKERS CONNECT WIRING CONNECTOR TO SPEAKER FIT SPEAKER BACK IN GRILLE AND REPLACE RETAINING SCREWS.

• remove the hinged brackets for rear seats remove locking bracket too
• open front door carfully pull up plastic scuff plate
• lift rear seat (push clip in centre of each seat)
• push back the panel hard from door piller
• pull panel out at bottom and puch down top of panel.Pig of a job but can be done.

There is a lot involved in replacing these speakers. You should also know that the original factory speakers are 10 ohm speakers. This means that if you replace them with new speakers (most of which are 4 ohm) you run the risk of damaging the stereo, the speakers, or both. This can also cause a potential fire hazard in your car. If you want new speakers, you really should look at installing a new stereo as well.

To get to the back speakers, you will need to remove 2 bolts located under the front edge of the rear seat (bottom). After you remove the bottom, you will need to remove the rear seat (back). This involves removing the bolts that hold down the rear seat belts, which is a large sized torx bit (T-45, T-47, or T-50... Don't remember which). After removing these, lift straight up on the seat back to remove. Now remove the deck brake light housing, and the bracket that holds it. Now the deck cover can be removed. Be careful not to bend it too much getting it out from under the side trim on both sides.

For the front speakers, you must disassemble a good portion of the dash. Remove the screw holding the light switch and the wiper switch housings. This screw is underneath each housing. Once removed, there are dash mounting screws behind them. These screws (and many of the other dash screws) are a smaller torx-bit (T-10 or T-15, don't remember which). Sometimes they use a 7mm bolt. There is a cover panel just above the glove box. This panel is held on with 2 screws located in the glove box. After removing this panel, you will find 2 or 3 bolts holding on the dash. Last but not least, you will find 2 bolts inside each of the defroster vent grilles. These grilles just snap out for easier access to the bolts.

1991 Pontiac Grand Am Car Radio Stereo Audio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger: Pink
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 4" Round
Car Audio Front Speakers Location: In Dash
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: 6" x 9" Oval
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

You need to remove the entire rear seat, the bottom & the seat back. Remove both of the rear inner C pillar trims, remove the rear parcel shelf, under the back window.
The speakers come UP from where they are mounted. You cannot take them out thru the trunk.
Hope this helps, and thanks for choosing FixYa.

You need to remove the entire package tray to access the speakers. Remove the side interior plastic panels, and the seat back small piece on each side to help.