1. The handle is loose or wobbly:
* Problem: The screws holding the interior door handle to the door panel may have loosened.
* Solution: Carefully remove the interior door panel (there are usually screws hidden under the armrest and around the edges). You'll find how-to videos online specific to 1999 Chevy Prisms. Once the panel is off, tighten the screws securing the handle. If the screws are stripped, you might need slightly larger screws or screw inserts.
2. The handle is broken:
* Problem: The handle itself is cracked, broken, or the internal linkage is damaged.
* Solution: This is more complex. You'll likely need a replacement interior door handle. You can find these online (eBay, Amazon, parts stores) or at a junkyard. Replacing it involves removing the interior door panel (as above) and disconnecting and reconnecting the linkage. Again, online videos specific to your car model will be invaluable. Be careful to note how the linkage works before disconnecting it.
3. The exterior door handle is broken:
* Problem: The outside handle is broken, often at the point where it connects to the linkage.
* Solution: This usually requires replacing the entire exterior door handle assembly. This can be more challenging, sometimes requiring specialized tools. Replacing it often involves removing the door panel (to access the linkage) and possibly drilling out rivets or removing screws that hold the exterior handle in place. Again, online videos for your specific car are a must.
4. The door won't open from the inside or outside:
* Problem: The linkage connecting the inside and outside handles is disconnected or broken.
* Solution: This means you'll need to remove the interior door panel to access and fix the linkage. If the linkage is broken, you may need a replacement.
Before you start:
* Consult a repair manual: A Haynes or Chilton repair manual for your specific year and model Chevy Prism will provide detailed instructions and diagrams.
* Search online: YouTube is your friend! Search for "1999 Chevy Prism door handle repair" or "1999 Chevy Prism interior door panel removal."
* Gather tools: You'll likely need screwdrivers (Phillips and flathead), possibly a trim removal tool (to avoid scratching the panel), and possibly a rivet tool (depending on the exterior handle repair).
Important Considerations:
* Safety: Disconnecting the door panel can be tricky. Take your time and be careful not to break any clips or damage the wiring.
* Complexity: If you're not comfortable working on cars, it's best to take it to a professional. Improper repair can lead to further damage.
* Parts: Have the correct replacement parts on hand *before* you start dismantling anything.
If the problem is beyond your skill level or comfort zone, taking it to a mechanic is the safer and likely more cost-effective solution in the long run. A simple loose handle might cost you only a few minutes of your time, but a more complex repair can quickly become frustrating and expensive if you lack experience.