Here's what you can try:
* Check the Owner's Manual: While unlikely to have a direct "disable" option, the manual might offer clues about how the auto-locking system works, perhaps revealing a setting or a fuse that could be related.
* Fuse Box Investigation: Carefully examine the fuse box (under the hood and/or inside the car, depending on the model). Look for a fuse related to the power locks or security system. Important: Don't just start pulling fuses randomly. Identify potential candidates by looking at the fuse box diagram (usually on the inside of the fuse box cover). Pulling the wrong fuse can disable essential functions.
* Wiring Modification (Advanced & Risky): This is a LAST resort and requires electrical knowledge. You'd need to trace the wiring harness related to the power locks. Find the wire responsible for triggering the auto-lock (this may require a wiring diagram, which can be found online through repair manuals or forums dedicated to 1993 Cavaliers). You would then disconnect or cut this wire. This is not recommended unless you're very comfortable working with car electronics. Incorrectly disconnecting wires can cause damage to your electrical system or create safety hazards.
* Aftermarket Solutions: Consider a professional installation of an aftermarket system to bypass or replace the factory auto-locking feature. This is the safest and most reliable method, but the most expensive.
Before attempting any of these options, especially the wiring modification, I strongly recommend consulting a qualified mechanic. They can diagnose the specific auto-locking behavior in your Cavalier and suggest the safest and most effective solution. Improper modifications could damage your car's electrical system or compromise its safety features.
