1. Disconnect the Power Sources:
* Power Window: If your truck has power windows, disconnect the power window switch connector. This is usually a small connector tucked behind or near the switch panel.
* Power Locks: Similarly, disconnect the power lock switch connector if equipped.
* Courtesy Light: Locate the courtesy light switch (often near the armrest) and carefully disconnect it.
2. Remove the Interior Door Handle:
* Most models have a small access panel (usually a screw or two) near the door handle. Remove this to access the attaching screws of the interior door handle assembly. Remove these screws, then carefully pull the handle away from the door panel. Take note of how everything connects; you'll need to put it back the same way.
3. Remove the Door Panel:
* Locate the Screws: Look for screws around the door panel's perimeter, particularly near the armrest and lower edge. Remove these.
* Release the Clips: This is the trickiest part. The panel is held in place primarily by plastic clips. Start at the bottom edge, gently prying the panel away from the door. Use a trim tool, plastic pry bar, or a flathead screwdriver wrapped in a cloth (to prevent scratching) to carefully work your way around the perimeter. The clips usually release with a slight popping sound. Be patient and persistent; applying too much force at once can break the clips.
* Work Your Way Around: As you pry, check for remaining clips. They are usually located around the edges and near the armrest. Gently pull the panel away as you release the clips.
4. Disconnect the remaining connections:
* Once all clips are released, carefully disconnect any remaining wiring harnesses. This might include the wiring for the door lock mechanism, speakers, etc.
5. Remove the Panel:
Once all screws are removed, clips are released, and wiring is disconnected, the door panel should pull away from the door.
Important Considerations:
* Patience is Key: Take your time and be gentle. Rushing the process significantly increases the risk of damage.
* Photography: Before you start, take pictures of how the different parts are assembled. This will be invaluable during reassembly.
* Trim Removal Tools: Plastic trim removal tools are highly recommended to help avoid scratching the panel or breaking the clips.
* Clip Replacement: If you break any clips, you'll need to replace them. These are usually available at auto parts stores.
Disclaimer: This is a general guide. The exact process may slightly vary depending on the specific model and options on your 1996 GM Sierra. Refer to a repair manual specific to your truck's year, make, and model for detailed instructions and diagrams if necessary. YouTube videos can also be helpful, but always double-check against a reputable source.
