* Emergency Trunk Release: Many Cadillacs of that era had an emergency trunk release inside the cabin, usually located in the glove compartment or under the rear seat. Check your owner's manual (if you have one) or consult a manual online for your specific model year.
* Manual Release Cable (If Accessible): There might be a cable inside the trunk that's connected to the latch. If you can access the cable from the rear bumper area (some cars have a small access panel), you might be able to pull it and release the trunk. This is less likely to work on a 90 DeVille.
* Professional Locksmith: A locksmith specializing in automotive locks will have the tools and expertise to open your trunk without causing damage. This is the safest and most reliable option.
* Damage: As a last resort, you could try forcing the trunk open. This is strongly discouraged, as it will likely cause damage to the paint, the latch mechanism, or other parts of the car.
Important Considerations:
* Alarm System: If your car has an alarm system, attempting to force entry will likely trigger it.
* Damage Risk: Any method other than a professional locksmith carries a risk of damaging your car.
Before trying anything, try to locate the owner's manual. That is your best source of information on how the trunk release system works. If you can't find the manual, searching online for "1990 Cadillac Sedan DeVille trunk release" might turn up helpful diagrams or instructions.
