1. Try the Interior Handle: The most obvious first step is to see if the *interior* rear door handle still works. If it does, you can open the door from inside.
2. Unlocking from the Inside (if accessible): If you can access the van from another door (driver or passenger side), unlock the rear door using the key or the interior unlock mechanism. This might seem obvious, but it's the easiest solution if it works.
3. External Access (More Invasive): If neither of the above works, you'll need to get creative and potentially damage something. Prioritize minimizing damage.
* Panel Removal (Least Destructive): You might be able to access the locking mechanism from the *interior* panel of the door. Removing this panel (usually involves unscrewing some screws and possibly popping some clips) might allow you to manipulate the locking mechanism. There are numerous YouTube videos showing how to remove interior door panels on Astro vans – search for "1992 Chevy Astro van rear door panel removal." Caution: This is tricky and requires patience. You'll likely need trim tools or something similar to pry the panel gently without breaking it.
* Fishing for the Latch (Risky): This is a last resort. You might try using a long, thin object (like a coat hanger or a stiff wire) to try to reach in and manipulate the locking mechanism from the outside. This is very difficult and could potentially cause more damage.
* Breaking a Window (Most Destructive): As a very last resort, breaking a rear window (or even a small side window) is the quickest way to gain access. However, this is expensive to repair, and you should only consider it if all other options fail and you need urgent access to the van. Consider the cost of replacement versus the cost of a new handle.
After Gaining Access: Once you're inside, you can access and replace the broken rear door handle. Again, YouTube videos will be your friend in finding step-by-step instructions for this process. Remember to purchase the correct replacement handle for your specific Astro van model.
Important Note: Always prioritize safety. If you're not comfortable attempting any of these methods yourself, it's best to call a locksmith or a mobile auto repair service. They have the tools and expertise to get your door open without causing excessive damage.