Cadillac CT6 Brake Lights Aren't Working

Common Causes of Non-Functioning Brake Lights in Your Cadillac CT6 and How to Fix Them

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
35% chance it's the
Brake Light Bulb
0%
25% chance it's the
Brake Light Fuse
0%
20% chance it's the
Brake Pedal Switch
0%
20% chance it's
Something else
The most common reasons a Cadillac CT6 brake lights aren't working are a bad brake light bulb, blown brake light fuse, or a faulty brake pedal switch.
  • Brake Light Bulb: A burnt-out brake light bulb can prevent the brake lights from illuminating, compromising safety and signaling to other drivers.
  • Brake Light Fuse: A blown brake light fuse can prevent the brake lights from functioning, often due to a short circuit or overload in the electrical system.
  • Brake Pedal Switch: A faulty brake pedal switch can prevent the brake lights from functioning properly and may affect the operation of the cruise control system.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

Troubleshooting Brake Light Issues in a Cadillac CT6

When troubleshooting brake light issues in your Cadillac CT6, begin by checking the simplest components first. Start with the brake light bulbs; inspect them for any signs of burning out or damage, as replacing a faulty bulb is often a quick fix. Next, examine the brake light switch located near the brake pedals, as this switch is crucial for completing the brake light circuit. If the switch is malfunctioning, it may need adjustment or replacement. Following this, check the fuse associated with the brake lights; a blown fuse can disrupt the entire system, so replacing it can resolve the issue. If the ABS light is illuminated on your dashboard, this could indicate deeper problems, such as issues with the speed sensor or low brake fluid levels, which may require further investigation. Lastly, consider the cruise control system, as it is linked to the brake lights; ensure that the lights activate properly when the brakes are applied, especially when cruise control is engaged. By systematically addressing these areas, you can effectively diagnose and resolve brake light issues in your Cadillac CT6, ensuring your vehicle remains safe and compliant on the road.

What to Check When Brake Lights Aren't Working on a Cadillac CT6?

When troubleshooting brake light issues on a Cadillac CT6, it's essential to systematically check for common problems that could be causing the malfunction. Start by inspecting the brake light bulbs, as burnt-out or faulty bulbs are often the primary culprits. If the bulbs are in good condition, examine the electrical connections for any signs of corrosion or damage, as poor grounding can disrupt the circuit. Next, assess the brake light switch, which is responsible for activating the lights when the brake pedal is pressed; a faulty switch may need replacement. Additionally, inspect the brake light socket for any wear or damage that could prevent proper electrical contact. By methodically evaluating these components, you can effectively identify and resolve the issue, ensuring your brake lights function correctly for safety on the road.

Why Are the Brake Lights Not Working on a Cadillac CT6?

When the brake lights on your Cadillac CT6 fail to illuminate, it is crucial to address the issue without delay. Neglecting malfunctioning brake lights not only poses a significant safety risk to you and other drivers on the road but can also lead to more severe vehicle damage over time. Common causes such as burnt-out bulbs, blown fuses, or faulty wiring can escalate into more complex electrical problems if left unchecked. Additionally, a malfunctioning brake light switch can prevent your brake lights from functioning altogether, increasing the likelihood of rear-end collisions. If your brake lights are not working when the headlights are on, this could indicate a bad ground circuit, which may require professional intervention. By promptly diagnosing and resolving these issues, you ensure your vehicle remains safe to drive and avoid potential legal repercussions associated with non-functioning brake lights. Taking the time to investigate these common causes can save you from costly repairs and enhance your overall driving safety.

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