1. Safety First: Place the car on level ground and engage the parking brake firmly. Use jack stands for added safety if you'll be working under the car. Wear safety glasses.
2. Locate the Hood Release Cable: Get under the car. The hood release cable is usually connected to a lever or pull mechanism somewhere near the center of the front of the car, behind the front bumper. It might be attached to the radiator support or a similar structure. You might need a flashlight to see clearly.
3. Identify the Cable: It'll be a relatively thin cable, possibly with a plastic or rubber sheath. It might be difficult to see, depending on the car’s undercarriage shielding.
4. Manually Release the Hood: Carefully trace the cable back to the mechanism. You might need to gently pull on the cable to feel for resistance. Once you find the end connected to the hood latch assembly, carefully and gently pull it. You may need to use pliers to get a good grip if it's difficult to reach. The hood should release.
5. Inspect the Damage: Once the hood is open, inspect the broken or disconnected latch mechanism. You might need a replacement part or a mechanic to repair it properly.
Important Considerations:
* Difficulty: The accessibility of the release mechanism varies by car. It could be very easy or quite difficult to access depending on the specific model and any aftermarket modifications.
* Photography: If you're unsure about anything, take pictures before you start. This will help you put it back together later or show a mechanic what the situation looks like.
* Professional Help: If you are uncomfortable working under the car or cannot locate the cable, it is strongly recommended that you take your car to a mechanic to have the hood latch repaired. This is safer and more efficient.
This process is a general guideline. The exact location and configuration of the hood release cable will vary slightly depending on the specific year and trim level of your 1991 Cadillac Deville. A repair manual specific to your vehicle would provide the most accurate and detailed instructions. You can often find these online or at auto parts stores.