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Engine-Codes – GMC – P0573 2015 GMC Sierra

P0573 2015 GMC Sierra Code - Brake Switch Circuit High Voltage

Quick Answer

The P0573 code for a 2015 GMC Sierra indicates a problem with the brake switch circuit registering high voltage. Common causes include Faulty brake switch, Short circuit in the brake switch circuit, Corrosion or damage to wiring connected to the brake switch. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0573 2015 GMC Sierra indicates Brake Switch Circuit High Voltage.
Common causes
Common causes include Faulty brake switch, Short circuit in the brake switch circuit, Corrosion or damage to wiring connected to the brake switch.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P0573 2015 GMC Sierra Description

The P0573 code for a 2015 GMC Sierra indicates a problem with the brake switch circuit registering high voltage. The brake switch is a critical component that informs the vehicle's computer when the brake pedal is depressed, allowing the transmission to shift out of park, and activating the brake lights. A high voltage reading can disrupt the proper functioning of these systems, potentially leading to safety concerns and issues with vehicle performance. This code may trigger the check engine light to illuminate on the dashboard.

OBDII Code P0573 2015 GMC Sierra - Brake Switch Circuit High Voltage
P0573 2015 GMC Sierra Code - Brake Switch Circuit High Voltage

Common Causes of P0573 2015 GMC Sierra

  1. Faulty brake switch
  2. Short circuit in the brake switch circuit
  3. Corrosion or damage to wiring connected to the brake switch
  4. Malfunctioning brake switch relay
  5. Issues with the vehicle's computer system

Symptoms of P0573 2015 GMC Sierra

  1. Check engine light illuminated on the dashboard
  2. Inability to shift out of park
  3. Brake lights not functioning properly
  4. Cruise control not engaging
  5. ABS system malfunctions

How to Fix P0573 2015 GMC Sierra

  1. Begin by diagnosing the exact cause of the high voltage reading in the brake switch circuit using a diagnostic scanner.
  2. Inspect the brake switch for any visible damage or signs of malfunction and replace if necessary.
  3. Check the wiring connected to the brake switch for any corrosion or damage, repairing or replacing as needed.
  4. Test the brake switch relay and replace if found to be faulty.
  5. Clear the diagnostic trouble codes and test the vehicle to ensure the issue has been resolved.

Cost to Fix P0573 2015 GMC Sierra

The cost of repairing a P0573 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your area. Typically, replacing a faulty brake switch or repairing wiring can cost between $100 to $300, including parts and labor. However, additional costs may arise if other components need replacement or if further diagnostics are required. It's advisable to consult with a trusted mechanic for a more accurate estimate based on your vehicle's specific needs.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0573 2015 GMC Sierra Code

1. What does the OBDII code P0573 on a 2015 GMC Sierra indicate?

The code P0573 signifies a high voltage condition in the brake switch circuit of the vehicle.

2. What are the common symptoms of a P0573 error code in a 2015 GMC Sierra?

Common symptoms include malfunctioning brake lights, cruise control not working, and the inability to shift out of park.

3. What are the possible causes of the P0573 code in a 2015 GMC Sierra?

Potential causes may include a faulty brake light switch, damaged wiring or connectors in the brake switch circuit, or issues with the vehicle's brake control module.

4. How can I diagnose the source of a P0573 code in my 2015 GMC Sierra?

To diagnose the issue, you can start by checking the brake light switch for proper operation, inspecting the wiring and connectors for any damage, and using a diagnostic scanner to read the code and determine the exact fault.

5. Can I drive my 2015 GMC Sierra with a P0573 error code?

It is not recommended to drive the vehicle with a P0573 code, as it can affect the proper functioning of crucial safety features like brake lights and could lead to potential safety hazards.

6. How can I repair a P0573 code on a 2015 GMC Sierra?

Repair options may include replacing the brake light switch, repairing any damaged wiring or connectors, or seeking professional assistance to diagnose and fix the underlying issue.

7. Will resetting the OBDII system clear a P0573 code in my 2015 GMC Sierra?

Resetting the system may temporarily clear the code, but if the underlying issue causing the P0573 code is not addressed, it is likely to reappear.

8. How much does it cost to fix a P0573 code on a 2015 GMC Sierra?

The cost of fixing a P0573 code can vary depending on the specific cause of the issue, the parts needed for repair, and whether you choose to do the repair yourself or seek professional help.

9. Are there any safety concerns associated with a P0573 code in a 2015 GMC Sierra?

Yes, there are safety concerns, as a malfunctioning brake switch circuit can lead to unpredictable brake light behavior and affect the proper operation of critical safety systems in the vehicle.

10. Can a P0573 code on a 2015 GMC Sierra cause the vehicle to fail an emissions test?

While the P0573 code is related to the brake switch circuit and not emissions directly, it is essential to address any OBDII trouble codes before an emissions test to ensure the vehicle is in proper working condition.

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