P0571 2014 GMC Sierra Code - Cruise Control Brake Switch Circuit
Quick Answer
The Engine Control Module (ECM) monitors the Brake Pedal Position Sensor. 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
- P0571 2014 GMC Sierra indicates Cruise Control Brake Switch Circuit.
- 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.
Code P0571 2014 GMC Sierra Description
This diagnostic test functions on the assumption that a sudden decrease in vehicle speed is caused by a brake pedal application. When the ECM detects that there is a 4.2 km/h (2.6 mph) or greater decrease in vehicle speed within 0.25 seconds without a transition of the stop lamp switch, the ECM sets Diagnostic Trouble Code (DTC) P0571.
The DTC will be set when the BCM detects either a low voltage signal on the stop lamp switch signal circuit when the serial data message from the ECM indicates the brakes are applied or a high voltage signal on the stop lamp switch signal circuit when the serial data message from the ECM indicates the brakes are not applied.
What are the Possible Causes of the DTC P0571 2014 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 P0571 2014 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 P0571 2014 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.
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Frequently Asked Questions about P0571 2014 GMC Sierra Code
1. What does the OBDII code P0571 mean on a 2014 GMC Sierra?
P0571 indicates a problem with the cruise control brake switch circuit, which affects the vehicle's ability to detect when the brake pedal is pressed.
2. What are the common symptoms of code P0571 on a 2014 GMC Sierra?
Symptoms include the cruise control not working, the brake lights malfunctioning, or a check engine light on the dashboard.
3. What causes code P0571 in a 2014 GMC Sierra?
Common causes include a faulty brake light switch, wiring issues in the brake switch circuit, or a blown fuse.
4. Can I still drive my 2014 GMC Sierra with a P0571 code?
Yes, the truck is usually drivable, but the cruise control may not function, and brake light issues could pose a safety risk.
5. How do I diagnose the P0571 code on a 2014 GMC Sierra?
Start by checking the brake light switch, inspecting the wiring and connectors for damage, and testing the circuit voltage with a multimeter.
6. How do I fix the P0571 code on a 2014 GMC Sierra?
Repairs may involve replacing a faulty brake light switch, fixing damaged wiring, or replacing a blown fuse in the circuit.
7. How much does it cost to repair a P0571 code on a 2014 GMC Sierra?
The cost varies but typically ranges from $50 to $200, depending on whether the brake switch or wiring needs replacement.
8. Can a faulty brake light switch cause other issues in a 2014 GMC Sierra?
Yes, a faulty brake light switch can disable the cruise control, cause brake light malfunctions, and potentially affect the transmission shift interlock.
9. How do I reset the P0571 code on my 2014 GMC Sierra after repairs?
Use an OBDII scanner to clear the code, or disconnect the battery for a few minutes to reset the system.
10. What tools do I need to fix a P0571 code on a 2014 GMC Sierra?
You may need a multimeter, basic hand tools, and an OBDII scanner to diagnose and repair the issue.
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