AutoCodes – GMC – P0573 2015 GMC Sierra

P0573 2015 GMC Sierra Code - Brake Switch Circuit High Voltage

Quick Answer

The Brake Pedal Position Sensor signal circuit is a B+ input from the Body Control Module (BCM) to the Engine Control Module (ECM). Common causes include Faulty Brake Pedal Position Sensor, Misadjusted Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted. 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 Pedal Position Sensor, Misadjusted Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted.
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.

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Code Popularity 244

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 14, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0573 2015 GMC Sierra Description

The Brake Pedal Position Sensor signal circuit is a B+ input from the Body Control Module (BCM) to the Engine Control Module (ECM). The BCM and ECM monitor the Brake Pedal Position Sensor signal circuit to detect when the brake pedal has been applied. When the brake pedal is applied, the BCM supplies B+ on the stop lamp signal circuit and also sends a serial data message to the ECM indicating that the brake pedal has been applied. This Diagnostic Trouble Code (DTC) will be set when the ECM detects a short to voltage on the discrete brake signal circuit when the serial data message from the BCM indicates the brakes are not applied. This diagnostic will run when the serial data message and the voltage signal on the brake switch signal circuit do not match for 8 out 10 times, and the condition is present for greater than 2 s.

OBDII Code P0573 2015 GMC Sierra - Brake Switch Circuit High Voltage - AutoCodes.com — P0573 2015 GMC Sierra Code - Brake Switch Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0573 2015 GMC Sierra?

Faulty Brake Pedal Position Sensor
Misadjusted Brake Pedal Position Sensor
Brake Pedal Position Sensor harness is open or shorted
Brake Pedal Position Sensor circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC P0573 2015 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0573 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0573 2015 GMC Sierra code?

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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.