1. Identifying the Problem:
Before you start, carefully examine the broken hook or loose panel. Determine *exactly* what's wrong:
* Broken Plastic Hook: The plastic hook itself might have snapped off, or broken at the point where it attaches to the door panel or the door itself.
* Loose Hook: The hook might still be intact, but loose in its mounting point on the door panel or the door. This usually means a broken clip or stripped plastic.
* Damaged Door Panel: The area around the hook on the door panel itself might be cracked or weakened.
2. Repair Methods:
* Broken Plastic Hook (Replacement): This is the most common problem. Your best bet is to replace the entire hook. Here's what you need to do:
* Find a Replacement: Your best source is a junkyard (salvage yard) specializing in Cadillac Eldorados. Alternatively, you might find them on online parts retailers specializing in used or NOS (New Old Stock) Cadillac parts. Be sure to specify the year (1999) and Eldorado model when searching. You may be able to salvage hooks from another door if you are replacing both panels.
* Installation: Carefully remove the remaining broken piece of the hook if possible. Gently push the new hook into the hole from the back of the door panel. If the mounting holes are loose, you can use a small dab of strong adhesive.
* Loose Hook (Reinforcement/Repair): If the hook is loose but not broken, you have a few options:
* Strong Adhesive: A small amount of strong adhesive (like epoxy or super glue specifically designed for plastics) can be used to re-secure the hook. Clean the area thoroughly with rubbing alcohol before applying the adhesive. Let it cure completely before testing.
* Small Screw/Bolt: A small self-tapping screw or bolt might be used to secure the loose hook, but this might require drilling a small pilot hole. This is a more permanent solution, but be cautious to not damage surrounding areas.
* Zip Tie (Temporary Fix): In a pinch, a zip tie can be used to temporarily hold the hook in place until you can find a proper replacement.
* Damaged Door Panel (Repair): A cracked or weakened area around the hook on the door panel itself can be tricky to repair.
* Adhesive Repair: A strong adhesive designed for plastic can be used to repair small cracks. You might need to use clamps to hold the pieces together while the adhesive sets.
* Bondo/Filler (for larger repairs): For larger cracks or holes, you may need to use a plastic filler like Bondo, sand it smooth and then repaint the area to match the door panel. This requires some skill and may not be invisible.
* Panel Replacement (Ultimate Solution): If the damage is severe, replacing the entire door panel may be the best option. Again, check junkyards or online retailers.
Important Considerations:
* Door Panel Removal: You'll likely need to remove the door panel to access the hooks. Search YouTube for "1999 Cadillac Eldorado door panel removal" for a visual guide. This usually involves removing screws and disconnecting various clips and connectors.
* Patience: These repairs can be fiddly. Be patient and take your time to avoid further damage.
* Safety First: If you aren't comfortable working on your car, it's best to take it to a professional auto repair shop.
Remember to always consult a repair manual or online resources specific to your 1999 Cadillac Eldorado for detailed instructions and diagrams. Good luck!
