It is hollow.
A solid slab is either solid concrete foundation or a flat solid wood door as opposed to a hollow core or a panel door.
Clips hold the door panel in place. To remove the panel, you will need a small pry bar and apply gentle pressure to the gap between the panel and the inner part of the door.
Remove the two screws from the arm rest. With the door open,standing looking at the inside door panel,take a medium flat tip screw driver slide it in between the metal and the inside panel, and pry out genitally. You will hear a poping sound that is the plastic keepers coming out.Work your way around the door till all the keepers are released,don't go across the top of the door. Grab the bottom of the panel and lift out and up. Be carful with wiring in the door.
Use a screw driver, remove the screws and the clips in the door panel of the car. Gently pull the panel away from the door, disconnect the wire connections between the panel and the door, and remove the panel the rest of the way.
Using a screw driver, remove the screws and the clips in the panel of the door and remove the panel gently. Remove any wiring connectors between the panel and the door, then remove the panel the rest of the way.
First, Using a screwdriver, remove all the screws in the door panel, unclip and clips holding the panel to the door frame. Next, gently pull on the door panel and removing any wiring connectors between the frame and the panel, and pull the panel the rest of the way off.
get a flat panel tool or a wonder bar and put in between the door panel and the door and pull toward the inside and you will see that is held by plastic clipsit has to pop out
A flush door has panels that are mostly flat and take up the entire space of the door. A panel door has loose fitting panels that fit into grooves that make up the frame of the door.
Using a screwdriver remove all the screws in the door panel, remove the clips, and pull the panel away from the frame, gently. Remove any wiring connection between the panel and the frame, and then pull the panel off the door frame.
A raised panel door has a rim, then an indentation and the panel inside it is raised to the level of the rim. A flat panel door is more like a picture frame where the rim is raised and the panel inside it is indented.
remove the large bolts between the door and the vehicle....
Remove the Phillips head screws out of the panel first, then remove the clip behind the window handle, if it's manual windows. The next step is to carefully pull the panel off of the plastic clips, which should remain fastened to the panel. You may have to pry between the panel and the door to get it started. Once the panel is off at the bottom lift it up and out from between the glass and door frame.