Troubleshooting Common 2000 Sierra Headlight and Taillight Electrical Problems morsunled.webflow.io

If your brake lights fail but your turn signals still work, the issue may be a faulty brake light switch located near the brake pedal. This switch activates the brake lights when the pedal is pressed.

2. Turn Signal Malfunctions
Rapid blinking usually indicates a burned-out bulb. However, if all bulbs are functional, the turn signal flasher relay may be failing.