* Faulty Brake Light Switch: This is the most common cause. The switch, located near the brake pedal, is designed to complete the circuit only when the brake pedal is pressed. If it's stuck closed or internally shorted, the brake lights will stay on.
* Short Circuit in the Wiring: A short in the wiring harness running from the brake light switch to the lights themselves can also cause this. This could be due to damaged insulation, a wire rubbing against metal, or corrosion.
* Faulty Brake Light Bulbs: While less likely to *cause* the problem, a shorted brake light bulb can sometimes draw enough current to keep the circuit energized even when the switch is open.
* Problem with the Tail Light Assemblies: Issues within the tail light assemblies themselves, such as internal shorts, can also keep the lights on.
* Centralized electrical problem (Less likely): Although less probable, a faulty component in the car's central electrical system could theoretically keep the circuit active. This is far less common than the switch or wiring issues.
Troubleshooting Steps:
1. Visual Inspection: Start with a visual inspection of the brake light wiring harness, looking for any obvious damage, corrosion, or wires that are touching metal. Pay close attention to the area around the brake pedal and the wiring leading to the tail lights.
2. Check the Brake Light Switch: Carefully examine the brake light switch. Try gently pushing and releasing the brake pedal to see if the switch is operating correctly. You might even be able to disconnect it and see if the lights go out (though this is generally best done with the car's battery disconnected for safety).
3. Check the Bulbs: Test the brake light bulbs themselves to rule them out as the direct cause.
4. Use a Multimeter: If you have a multimeter, you can test the voltage at the brake light switch and the wires leading to the brake lights to pinpoint the location of the short circuit. This is best done by someone familiar with electrical systems.
5. Professional Help: If you're not comfortable working with car electrical systems, it's best to take your Pontiac 6000 LE to a qualified mechanic. They'll have the tools and expertise to diagnose and fix the problem safely and efficiently.
Leaving the brake lights on continuously drains your battery and is a safety hazard. Addressing this issue promptly is important.
