AutoCodes – GMC – P0572 2015 GMC Sierra

P0572 2015 GMC Sierra Code - Brake Switch Circuit Low 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
P0572 2015 GMC Sierra indicates Brake Switch Circuit Low 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 202
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 14, 2022
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Code P0572 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 ground or an open on the discrete brake signal circuit when the serial data message from the BCM indicates the brakes are 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 P0572 2015 GMC Sierra - Brake Switch Circuit Low Voltage - AutoCodes.com
P0572 2015 GMC Sierra Code - Brake Switch Circuit Low Voltage

What are the Possible Causes of the DTC P0572 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 P0572 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 P0572 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 P0572 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 P0572 2015 GMC Sierra Code

1. What does the OBDII code P0572 mean on a 2015 GMC Sierra?

The P0572 code indicates "Brake Switch Circuit Low Voltage," meaning the vehicle's computer has detected a voltage issue in the brake switch circuit.

2. What are the common symptoms of code P0572 in a 2015 GMC Sierra?

Symptoms may include the brake lights not working, cruise control being disabled, or warning lights like the check engine light appearing on the dashboard.

3. What causes the P0572 code on a 2015 GMC Sierra?

Common causes include a faulty brake light switch, damaged or corroded wiring, a blown fuse, or a poor electrical connection in the brake switch circuit.

4. Can I drive my 2015 GMC Sierra with a P0572 code?

While the vehicle may still be drivable, safety features like brake lights and cruise control may not work properly, making it unsafe to drive without addressing the issue.

5. How do I diagnose the P0572 code on a 2015 GMC Sierra?

Start by inspecting the brake light switch, wiring, fuses, and connectors for damage or corrosion. Use a multimeter to test the voltage and continuity in the circuit.

6. How can I fix the P0572 code on my 2015 GMC Sierra?

Repairs may include replacing the brake light switch, repairing or replacing damaged wiring, cleaning corroded connections, or replacing a blown fuse.

7. Is the brake light switch the most common cause of the P0572 code?

Yes, a faulty or misaligned brake light switch is one of the most common causes of this code.

8. How much does it cost to fix the P0572 code on a 2015 GMC Sierra?

Repair costs can range from $50 to $200, depending on whether you need to replace the brake light switch or address wiring issues.

9. Can a P0572 code affect other systems in my 2015 GMC Sierra?

Yes, this code can disable cruise control and affect the functionality of the brake lights, which are critical for safe driving.

10. Will clearing the P0572 code with a scan tool fix the problem?

Clearing the code may turn off the warning light temporarily, but the issue will return unless the underlying problem is resolved.

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