I need to know if i can lift up my back seat without removing screws? I know how to fold the rear seat forward but i need to get underneath the bottom seat

https://www.youtube.com/watch?v=zCOVX1APhI4

all seats are removable its how far are you willing to go to most ar bolted and these very tight hex heads or torx will require some work

To fold the seats flat you need to lift the seat portion upwards so that it sits vertical behind the driver's seat and then remove the headrests on the rear seats. Then use the large button to release the seat rest portion and drop it into the cavity created by lifting the seat vertical.

To fold down, follow these steps:
1. There is a loop located in the middle of the back seat - pull it forward and the bottom part of the rear seat will fold down
2. Wedge the the back seat, and it should not give you any trouble in folding down
3. To ensure that the seat goes all the way down- remove the headrest.
If your seat can not be folded-down, follow these steps to remove it:
1. Put some pressure on the bottom cushion of the back seat.
2. To release the bottom seat, pull the T handles, and then remove the cushion
3. There will be some bolts and screws on the bottom of the seat - remove them, and then you can pull out the seat.

LIFT THE REAR SEAT BOTTOM CUSHION UP SHARPLY AT THE TWO FRONT CORNERS UNTIL THE TWO CLIPS COME OUT OF THE BODY,THEN SLIDE THE SEAT CUSHION FORWARD AND OUT OT THE VECHICLE. AT EACH LOWER CORNER REMOVE THE NUTS SECURING THE TWO REAR SEAT BACK TABS WITH THE NUTS REMOVED PULL THE SEAT BACK FORWARD ENOUGH FOR THE TABS TO CLEAR THE STUDS THEN PULL THE SEAT BACK SHARPLY UP AND TOWARD THE INSTRUMENT PANEL TO DISENGAGE THE UPPER SEAT CLIPS FROM THE BODY.REMOVE THE SEAT BACK FROM THE VECHICLE.

Rear Bench
(see Figure 4)

1. Bearing down with your knee on the rear seat cushion, push the cushion rearward and disengage it from the retaining brackets.
2. Remove the rear seat armrests if applicable.

Fig. 4: Pull the bottom of the seat upwards and pull out

1. Remove the seatback lower retaining screws and seat belt bolts.
2. Grasp the seatback at the bottom and lift it up to disengage the hanger wire from the retainer brackets.
   

To install:

1. Position the seat back assembly so that the hanger wire is fully engaged in the package tray slots.
2. Install the lower retaining screws and tighten to 13-19 ft. lbs. (17-37 Nm).
3. Position the seat cushion assembly into the vehicle.
4. Apply knee pressure to the lower portion of the seat cushion assembly. Push rearwards and down to lock the seat cushion into the seat retainer.
5. Check the seat cushion to ensure it is secured into the floor retainer.
   

Rear, Fold-Down Seats

1. Push the rear cushion rearwards, then lift to release. Remove the cushion.
2. Remove the 2 lower retaining screws attaching the seat back to the floor.
3. Lift up and disengage the upper clips of the seatback from the top of the folding floor.
4. Remove the seat assembly.
   

To install:

1. Position the seat back assembly and align the retaining hooks. Ensure hooks fully engage in slots.
2. Install the two outboard retaining bolts, then tighten to 13-19 ft. lbs. (17-27 Nm).
3. Lower the seat backs and install the upper retaining screws.
4. Install the lower center retaining screw, tighten to 13-19 ft. lbs. (17-27 Nm).
5. Install the rear seat cushion. Ensure the rear seat cushion front retainers latch properly.

Hope helps (remember rated this).

Open the rear lift gate on the Yukon. You need to have access to the seat controls to remove it from the vehicle.

Lift the release lever located near the bottom of the back side of the seat. Fold the seat-back forward and lay it flat.

Locate the carrying handle at the base of the seat in the rear. Grasp the handle and pull it toward the rear of the vehicle to release the seat from the floor latch.

Roll the seat backward along the track built into the floor of the vehicle. The track will guide the wheels so that you can roll the seat completely out of the rear of the vehicle

I have had the exact same problem , the actaual cause of the seat not sliding back is due to the small cable retaing clip which fastens at the underneath of the seat this is a very common problem and is very trickY to get to as you say the rear panel appers to need to come off , it does not, you axs the small clip from removeing the liners at the very bottom of the seat where there is a footwell light , when you axs this area you be able to get to the clip or the actaul cable ,to which ever is broken,,

Removal

1. Relieve the Fuel System Pressure . Refer to the procedure in this section.
   

Cushion Cover and Pad, Rear Seat — One-Piece and 50/50 Split Fold Removal

1. Remove the two rear seat cushion bolts.
   

1. Fold the rear seat back cover and cushion (60084) forward.
   

1. Carefully pull the rear seat cushion and cover (60030) out from under the rear seat back cover and cushion and remove the rear seat cushion and cover from the vehicle
   

1. Remove the rear seat cushion and cover (60030). Refer to Section 01-10 for the removal procedure.
   

1. Remove the three luggage compartment floor cover hold-down pins and fold the luggage compartment floor cover (45455) forward until the fuel pump assembly access plate is visible.
   

1. Remove the four fuel pump assembly access plate screws, the ground lead, and the fuel pump assembly access plate from the chassis.
   
   
   
   
   

1. Disconnect the fuel pump assembly electrical connector.
   
   
   
   
   

1. On 4-door vehicles, remove the fuel vapor tube shutoff valve bolt and the evaporative emission tube shut off valve (9G332) from the bracket on the fuel pump assembly housing.
   
   
   
   
   

1. Loosen the two hose clamps and disconnect the two fuel pump hoses from the fuel pump hose fittings on the fuel pump assembly housing.
   
   
   
   
   

1. Remove the four screws (2-door) or eight screws (4-door) and lift the fuel pump assembly housing from the fuel tank (9002).
   
   
   
   
   

1. Disconnect the fuel level sensor electrical connector.
   

1. Remove the two fuel level sensor washers and fuel level sensor nuts and the fuel level sensor.
   
   

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Section 10-01: Fuel Tank, Filters, Lines and Electric Fuel Pump 1996 Aspire Workshop Manual
REMOVAL AND INSTALLATION Fuel Pump Removal

1. Remove the fuel level sensor. Refer to the Fuel Level Sensor removal procedure in this section.
   

1. Remove the fuel pump screw, fuel pump grommet and the fuel pump bracket from the bottom of the fuel pump (9350).
   
   
   
   
   

1. Remove the fuel tank sender filter bracket, fuel tank sender filter (9A011) and the fuel tank sender filter retainer from the fuel pump.
   

1. Disconnect the fuel pump electrical connector.
   

1. Remove the clamp and the fuel pump from the fuel pump assembly housing.
   

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