Engine-CodesGMC – P0572 GMC

P0572 GMC Code - Brake Switch Circuit Low Voltage

Quick Answer

The P0572 GMC diagnostic trouble code refers to a low voltage condition in the brake switch circuit. Common causes include Faulty brake switch, Wiring issues or short circuits in the brake switch circuit, Corrosion or poor connection at the brake switch terminals. 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 GMC indicates Brake Switch Circuit Low Voltage.
Common causes
Common causes include Faulty brake switch, Wiring issues or short circuits in the brake switch circuit, Corrosion or poor connection at the brake switch terminals.
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.
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P0572 GMC Description

The P0572 GMC diagnostic trouble code refers to a low voltage condition in the brake switch circuit. The brake switch is a crucial component of the vehicle's braking system, as it sends a signal to the vehicle's computer when the brake pedal is depressed. This signal is used to activate the brake lights and disengage cruise control, among other functions. When the computer detects low voltage in the brake switch circuit, it may illuminate the check engine light and potentially affect the vehicle's performance and safety.

OBDII Code P0572 GMC - Brake Switch Circuit Low Voltage
P0572 GMC Code - Brake Switch Circuit Low Voltage

Common Causes of P0572 GMC

  1. Faulty brake switch
  2. Wiring issues or short circuits in the brake switch circuit
  3. Corrosion or poor connection at the brake switch terminals
  4. Issues with the vehicle's computer or control module
  5. Low battery voltage affecting the brake switch circuit

Symptoms of P0572 GMC

  1. Check engine light illuminated
  2. Brake lights not working
  3. Cruise control not disengaging when braking
  4. Difficulty shifting out of park
  5. Loss of traction control or stability control functionality

How to Fix P0572 GMC

  1. Begin by checking the brake switch for proper operation and voltage output.
  2. Inspect the wiring and connectors in the brake switch circuit for any damage or corrosion.
  3. Test the vehicle's computer or control module for any faults related to the brake switch circuit.
  4. Replace the brake switch if it is found to be faulty.
  5. Clear the diagnostic trouble code and test the vehicle to ensure the issue has been resolved.

Cost to Fix P0572 GMC

The cost of repairing a P0572 GMC code can vary depending on the specific cause of the issue. In general, the cost of replacing a faulty brake switch can range from $50 to $100 for the part, with additional costs for labor. Overall, the total repair cost can range from $100 to $300, including parts and labor. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

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Information for Specific GMC Models

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.

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