P0571 2018 GMC Sierra Code - Cruise Control Brake Switch Circuit
Quick Answer
The P0571 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the cruise control brake switch circuit. Common causes include Faulty brake switch, Wiring issues in the brake switch circuit, Corrosion or poor connection in the brake switch circuit. 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
- P0571 2018 GMC Sierra indicates Cruise Control Brake Switch Circuit.
- Common causes
- Common causes include Faulty brake switch, Wiring issues in the brake switch circuit, Corrosion or poor connection in the brake switch circuit.
- 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 P0571 2018 GMC Sierra Description
The P0571 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the cruise control brake switch circuit. This code indicates that there is a malfunction in the brake switch circuit that is preventing the cruise control system from functioning properly. The cruise control system uses the brake switch to disengage the cruise control when the brake pedal is pressed, ensuring the vehicle slows down or stops as needed.
Common Causes of P0571 2018 GMC Sierra
- Faulty brake switch
- Wiring issues in the brake switch circuit
- Corrosion or poor connection in the brake switch circuit
- Defective cruise control module
- Electronic control unit (ECU) malfunction
Symptoms of P0571 2018 GMC Sierra
- Inoperative cruise control system
- Check engine light illuminated on the dashboard
- Difficulty setting or maintaining a constant speed
- Brake lights staying on constantly
- Erratic behavior of the vehicle's speed control system
How to Fix P0571 2018 GMC Sierra
- Begin by diagnosing the issue using a diagnostic scanner to confirm the P0571 code and identify the specific cause of the problem.
- Inspect the brake switch and its wiring for any signs of damage, corrosion, or poor connections. Replace the brake switch if necessary.
- Check the cruise control module and ECU for any faults or malfunctions. Replace or repair as needed.
- Clear the DTC from the vehicle's memory using the diagnostic scanner to reset the system and ensure the issue has been resolved.
- Test drive the vehicle to verify that the cruise control system is functioning properly and that the code does not reappear.
Cost to Fix P0571 2018 GMC Sierra
The typical repair costs for addressing the P0571 code on a 2018 GMC Sierra can vary depending on the specific cause of the issue. Generally, the cost of replacing a faulty brake switch or repairing wiring issues can range from $100 to $200, including parts and labor. However, if the cruise control module or ECU needs to be replaced, the cost could increase significantly. It is recommended to consult with a professional mechanic or auto repair shop for an accurate estimate based on the specific diagnosis and repair needed. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to inquire about rates in your local area for a more precise cost estimate.
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Frequently Asked Questions about P0571 2018 GMC Sierra Code
1. What is the meaning of OBDII code P0571 on a 2018 GMC Sierra?
- The OBDII code P0571 indicates a Cruise Control Brake Switch Circuit malfunction in a 2018 GMC Sierra.
2. What are the common symptoms of a Cruise Control Brake Switch Circuit issue (P0571) in a 2018 GMC Sierra?
- Common symptoms include inoperative cruise control, difficulty engaging or disengaging cruise control, and the inability to set a cruising speed.
3. What are the possible causes of OBDII code P0571 in a 2018 GMC Sierra?
- The most common causes of code P0571 are a faulty brake light switch, damaged wiring or connectors in the brake switch circuit, or a malfunctioning cruise control module.
4. How can I diagnose a Cruise Control Brake Switch Circuit issue (P0571) in a 2018 GMC Sierra?
- To diagnose a P0571 code, you can visually inspect the brake light switch and its wiring, test the brake switch for continuity, and use a scan tool to check for related error codes.
5. Can a faulty Cruise Control Brake Switch Circuit (P0571) impact vehicle safety?
- Yes, a malfunctioning brake switch circuit can affect the operation of the brake lights, cruise control system, and other safety features, so it is important to address this issue promptly.
6. How can I repair an OBDII code P0571 on a 2018 GMC Sierra?
- Repair options may include replacing the brake light switch, repairing damaged wiring or connectors, resetting the error code with a scan tool, or seeking professional assistance for further diagnosis.
7. Does the Cruise Control Brake Switch Circuit issue (P0571) affect the drivability of a 2018 GMC Sierra?
- While the vehicle may still be drivable with a P0571 code, the cruise control functionality may be compromised, leading to inconvenience during highway driving.
8. Can I reset the OBDII code P0571 in a 2018 GMC Sierra by disconnecting the battery?
- Disconnecting the battery may temporarily clear the code, but it is recommended to address the root cause of the issue to prevent the code from reappearing.
9. Is it safe to continue driving a 2018 GMC Sierra with an unresolved P0571 code?
- It is generally safe to drive the vehicle with a P0571 code, but it is important to address the underlying problem to ensure proper functioning of the cruise control and brake lights.
10. How much does it typically cost to repair an OBDII code P0571 on a 2018 GMC Sierra?
- The cost of repairing a P0571 code can vary depending on the cause of the issue, but it may involve parts replacement and labor costs that can range from $100 to $300 or more.
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