1. Check the Bulb:
* Access the bulb: Locate the dome light fixture. Usually, it's in the overhead console. You'll likely need to gently pry it down or unscrew it to access the bulb.
* Inspect the bulb: Make sure the bulb isn't burned out. Visually inspect the filament. If it's broken or blackened, replace it with a new bulb of the correct type (check your owner's manual).
2. Check the Fuse:
* Locate the fuse box: Consult your owner's manual to find the location of the interior fuse box (usually under the dash or in the engine compartment).
* Identify the dome light fuse: Your owner's manual will specify which fuse controls the dome light. It might be labeled "Dome," "Interior Light," or something similar.
* Inspect the fuse: Carefully remove the fuse and visually inspect it. Look for a broken filament inside the glass. If it's blown, replace it with a fuse of the same amperage rating.
3. Check the Dome Light Switch:
* Locate the switch: This is usually on the overhead console, often near the dome light itself. It might be a simple on/off switch or a multi-position switch controlling different lighting modes.
* Test the switch: If it's a simple on/off switch, try turning it on and off multiple times. If it's a multi-position switch, try each position. If the switch feels loose or sticky, it might be faulty and need replacement.
4. Check the Wiring:
* This is the most complex step and requires some electrical knowledge.
* Access the wiring: You might need to remove some interior trim panels to access the wiring harness leading to the dome light.
* Inspect for damage: Look for any broken wires, loose connections, or corrosion. Carefully inspect the connections at both the dome light fixture and the switch.
* Test the wiring (advanced): You can use a multimeter to test for continuity in the wiring circuit. This requires some electrical knowledge and safety precautions. If you're not comfortable doing this, it's best to consult a professional.
5. Check the Door Switches (if applicable):
* Some Cavaliers have door switches that automatically turn on the dome light when a door is opened. If the light doesn't come on with the doors, the door switches could be faulty. You may need to test these with a multimeter for continuity.
6. Consult a Professional:
If you've checked all of the above and the dome light still doesn't work, it's best to take your Cavalier to a qualified mechanic or auto electrician. The problem could be a more complex electrical issue requiring specialized tools and knowledge.
Important Safety Note: Always disconnect the negative battery terminal before working on any electrical components in your vehicle to avoid accidental shorts or shocks. If you are not comfortable working with car electrical systems, seek professional help.
