1. The Obvious Checks:
* Fuses: Check the fuses related to the taillights in the fuse box (usually under the hood and/or inside the car). Consult your owner's manual to locate the correct fuses. Replace any blown fuses with the correct amperage.
* Bulbs: The most common cause. Inspect both taillight bulbs (brake lights, turn signals, reverse lights are all separate). Replace any burnt-out bulbs. While you're at it, check the third brake light (usually mounted high on the rear deck).
* Grounds: Poor ground connections can prevent lights from working. Check the ground wires connected to the taillight assemblies. They should be clean and securely fastened.
2. More Involved Troubleshooting:
* Tail Light Switch: While less common, a faulty tail light switch could be the culprit. This switch is usually located near the steering column or on the floor, depending on the year of your C5.
* Wiring Harness: Inspect the wiring harness leading to the taillights for any damage, breaks, or corrosion. This can be tricky, and you might need a wiring diagram.
* Body Control Module (BCM): The BCM controls many electrical functions in your Corvette. A faulty BCM can cause various electrical problems, including taillight failure. This is a more complex issue requiring diagnostic tools or a professional mechanic.
* Relay: There might be a relay involved in the taillight circuit. Check your owner's manual or a wiring diagram to locate it and test it.
* Multi-meter: If you're comfortable using a multimeter, you can test for power and ground at the taillight sockets. This can pinpoint the location of the problem – whether it's the wiring, the bulbs, or the BCM.
3. Seeking Professional Help:
If you've checked the fuses, bulbs, and grounds and still have no taillights, it's best to consult a qualified mechanic or an auto electrician. They have the diagnostic tools and expertise to identify more complex problems with the BCM or wiring harness.
Important Safety Note: Driving with inoperative taillights is extremely dangerous. Do not drive your Corvette until the problem is resolved. If possible, have it towed to a repair shop.
