1. Gather Your Tools and Materials:
* New lock cylinder: Make sure you get the correct one for your specific Cavalier model and door (driver's side, passenger side). You'll need the correct key to go with it.
* Small flathead screwdriver: For prying and possibly removing retaining clips.
* Phillips head screwdriver: May be needed depending on the door panel removal.
* Panel removal tools (optional but recommended): These plastic tools help avoid scratching the door panel.
* Interior door panel removal guide (highly recommended): Search online for a guide specific to your year and model. Door panel removal varies significantly between car makes and models.
* Needle-nose pliers (possibly): To help with small clips or parts.
* Penetrating oil (like PB Blaster): This can help loosen any stubborn screws or clips.
* Clean rags or shop towels: To keep things clean and prevent scratches.
2. Remove the Interior Door Panel:
* This is the most crucial and potentially tricky step. Improper removal can damage your door panel clips. Find a guide specific to your 1996 Chevy Cavalier on YouTube or a repair manual. Generally, this involves removing screws around the door handle, armrest, and possibly under the door pull. The panel will likely pop off after the screws are removed. Be gentle; the clips are fragile.
3. Access the Lock Cylinder:
* Once the door panel is removed, you'll see the inner workings of the door. The lock cylinder will be housed in a mechanism.
* Locate the retaining clips or screws: These hold the lock cylinder in place.
* Carefully remove the retaining clips or screws: Use the appropriate tools and be gentle to avoid damaging them. Penetrating oil might help if they're stuck.
4. Remove the Old Lock Cylinder:
* Once the retaining clips or screws are removed, the lock cylinder should come out. It might be slightly stubborn; gently wiggle it free. Take note of its orientation (how it's positioned) for correct reinstallation.
5. Install the New Lock Cylinder:
* Insert the new lock cylinder: Make sure it's oriented the same way as the old one.
* Secure the new lock cylinder: Replace the retaining clips or screws.
6. Reassemble the Door Panel:
* Carefully reattach the door panel, ensuring all clips are properly seated. Replace the screws.
7. Test the New Lock Cylinder:
* Test the new lock cylinder with your key to ensure it works correctly.
Important Considerations:
* Key Blanks: If you are not replacing with an entire assembly (cylinder, key, and tumbler), you'll likely need to have a new key cut from a blank that matches your new lock cylinder. Auto parts stores or locksmiths can do this.
* Professional Help: If you are uncomfortable with any part of this process, it's best to seek professional help from a locksmith or auto mechanic. Damaged door panels or improper lock cylinder installation can lead to more expensive repairs.
* Safety: Be cautious when working with sharp tools.
This process is a general overview; specific steps might vary slightly depending on your exact Cavalier model. Always consult a repair manual or video guide specific to your vehicle for the most accurate instructions. Remember to take pictures as you disassemble to help with reassembly.
