Before you start:
* Disconnect the battery's negative terminal. This prevents accidental short circuits.
* Gather tools: You'll likely need a trim removal tool (plastic pry tool is ideal to avoid scratching), a Phillips head screwdriver, and possibly a Torx screwdriver depending on your model.
General Steps (may vary slightly):
1. Window Switch Removal (if applicable): Sometimes the window switch panel needs to be removed first to access further fasteners. Look for small screws or clips holding it in place. Carefully pry it loose with your trim tool.
2. Door Handle Removal (if applicable): The interior door handle assembly might need to be removed to access more fasteners holding the door panel on. This usually involves removing screws from behind the handle itself, possibly after removing a trim piece covering the screws.
3. Locate and Remove the Panel Screws/Clips: Carefully inspect the door panel's perimeter. Look for screws around the edges, particularly at the bottom and armrest area. There are also likely numerous plastic clips holding the panel to the door.
4. Panel Release: Once you've removed all visible screws and clips, gently pry the panel away from the door starting at the bottom edge. Use your plastic trim tool to carefully work your way around the perimeter, releasing the clips. Work slowly and carefully; the clips are fragile and can break. The panel will be held by several clips, often more than initially appear.
5. Disconnect Electrical Connectors: Once the panel is mostly loose, carefully disconnect any electrical connectors for the window switch, door lock, and other switches/wiring. These are usually just push-in connectors that you can gently squeeze and unplug.
6. Remove the Panel: Once all fasteners and connectors are disconnected, carefully remove the door panel from the door.
Regarding the window motor: The fact that you hear the motor running but the window isn't moving indicates a problem *within* the window regulator mechanism, not necessarily with the door panel itself. This is often caused by broken cables, a binding regulator, or a faulty motor. Removing the door panel will give you access to the regulator, but you'll likely need to diagnose and fix the regulator issue separately.
Important Considerations:
* Take pictures: Before you start, take pictures of the panel and its position. This helps immensely during reassembly.
* Work slowly and carefully: Rushing can lead to broken clips or damaged parts.
* Consult a repair manual: A Haynes or Chilton repair manual for your 1999 Suburban is invaluable for detailed instructions and diagrams. Online forums specific to your vehicle may also have helpful pictures and guides.
If you're uncomfortable tackling this yourself, it's best to seek professional help from an auto mechanic or body shop. They have the experience and tools to avoid damaging your vehicle's interior.
