1. Check the Obvious:
* Is the trunk actually locked? Sometimes, the key or interior latch isn't engaging fully. Try jiggling the key and the interior release a few times with a bit of force (but don't force it excessively).
* Check the latch mechanism itself: Open the back seat (if applicable) and see if you can access any part of the trunk latch mechanism. Look for anything obviously broken or out of place.
* Exterior Trunk Release: Ensure the exterior trunk release button itself isn't broken.
* Battery: If the trunk release is electronic, a weak battery can sometimes cause problems. Try starting the car to see if that helps.
2. Investigate the Cables and Linkage:
* Interior Release Cable: This is a common culprit. From inside the car, with the back seat down (if necessary), locate the cable connected to the interior release lever. See if you can feel for any resistance or movement as you pull the lever. If the cable is broken or disconnected, you'll need to access the trunk latch mechanism to reconnect it or replace the cable. This often involves removing interior panels.
* Trunk Lock Mechanism: If the cable seems fine, the problem might be within the trunk lock itself. This usually requires removing the inner trunk panel (careful not to break the plastic clips) and inspecting the lock for any broken parts.
3. Emergency Trunk Release (if your model has one):
Some Cavalier models might have a hidden emergency release. Consult your owner's manual. The location varies depending on the model year and trim level; it might be under a rear seat or hidden behind interior panels.
4. Accessing the Trunk (Destructive Method - Use as a Last Resort):
If all else fails, you might need to gain access through other means. This is only a last resort as it's the most damaging option.
* Removing the taillights: This might allow access to the trunk latch mechanism, potentially enough to release it.
* Removing the rear interior panel: This is typically the most difficult option, and might involve more extensive disassembly and potentially damage to the car's interior.
Tools You Might Need:
* Screwdrivers (Phillips and flathead)
* Panel removal tools (plastic pry tools to avoid scratching)
* Pliers
* A flashlight
* Replacement cable (if needed)
Important Considerations:
* Safety: Disconnect the negative battery terminal before working on any electrical components.
* Owner's Manual: Consult your owner's manual for specific information about your Cavalier model. It may have diagrams and instructions on accessing the trunk latch.
* Professional Help: If you're uncomfortable working on your car, take it to a mechanic. They have the experience and tools to diagnose and repair the problem efficiently.
This process requires patience and a methodical approach. Start with the simplest checks and gradually move to more involved steps only if necessary. Remember to take pictures as you disassemble things to help with reassembly.
