1. Check the Obvious:
* Inside Release: Double-check the interior hood release lever. Sometimes it's just not fully engaged or something is obstructing its movement. Try pulling firmly and steadily.
* Cable: The hood release cable might be frayed, disconnected, or jammed. You might be able to feel for the cable under the dash and see if it's moving freely. A gentle tug might help, but avoid excessive force.
2. External Access:
* Hood Release: Some Rivieras have a secondary exterior hood release, often located near the grille or headlights. Check your owner's manual for its location (if you have one). It might be a small, hidden button or lever.
3. Feeling for the Latch:
* Under the Hood: If you can see any part of the hood latch mechanism, maybe even a slight gap, try feeling for the latch and see if you can manipulate it with your fingers or a tool (like a long, thin flathead screwdriver or a coat hanger). Be very careful not to scratch the paint or damage any surrounding parts. This is difficult and requires some luck.
4. If All Else Fails (Use Caution):
* Visual Inspection: Look closely at the hood and latch mechanism from both the inside and the outside. Can you identify where the problem might be? Are there any obvious obstructions? Take photos if possible to aid in diagnosis.
* Professional Help: If you've tried everything and the hood remains stubbornly shut, it's best to call a locksmith or a reputable mechanic specializing in older vehicles. They have the tools and expertise to safely open the hood without causing damage. They may need to access the latch mechanism from underneath the car.
Important Safety Precautions:
* Never force anything. Excessive force can damage the hood, latch, or other components.
* Be mindful of your fingers. Use caution when working near the hood latch mechanism.
* Consult your owner's manual: It may have specific instructions for your model year.
* Consider safety: If you feel uncomfortable attempting any of these steps, seek professional help immediately.
Remember that the specific location and design of the hood release mechanism can vary slightly depending on the year and model of your Buick Riviera. The more details you can provide (year, model) the more specific advice can be given.