C0277 2018 GMC Sierra Code - Brake Pedal Position Sensor Circuit
Quick Answer
The brake pedal position sensor is used to sense the action of the driver's application of the brake pedal. Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor circuit poor electrical connection. 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
- C0277 2018 GMC Sierra indicates Brake Pedal Position Sensor Circuit.
- Common causes
- Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor circuit poor electrical connection.
- 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 C0277 2018 GMC Sierra Description
What are the Possible Causes of the DTC C0277 2018 GMC Sierra?
- Faulty 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 C0277 2018 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.
Code Tech Notes
C0277:07 Brake Pedal Position Sensor Circuit High Voltage
C0277:09 Brake Pedal Position Sensor Circuit Too Fast Transitions
C0277:12 Brake Pedal Position Sensor Circuit Below Minimum Threshold
C0277:4B Brake Pedal Position Sensor Circuit Calibration Not Learned
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C0277 2018 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 C0277 2018 GMC Sierra code?
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Frequently Asked Questions about C0277 2018 GMC Sierra Code
1. What does the OBDII code C0277 mean on a 2018 GMC Sierra?
C0277 indicates an issue with the Brake Pedal Position Sensor Circuit, which monitors the brake pedal's position to communicate with the vehicle's braking and stability control systems.
2. What are the common symptoms of code C0277 in a 2018 GMC Sierra?
Symptoms may include the ABS or traction control warning lights illuminating, erratic brake pedal behavior, or the brake lights not functioning as expected.
3. What causes the C0277 code to appear on a 2018 GMC Sierra?
Common causes include a faulty brake pedal position sensor, damaged wiring or connectors in the sensor circuit, or a malfunction in the ABS module.
4. Can I drive my 2018 GMC Sierra with the C0277 code active?
While the vehicle may still be drivable, it's not recommended as the braking system's performance and safety features, like ABS, may be compromised.
5. How do I diagnose the C0277 code on a 2018 GMC Sierra?
A mechanic will typically use a scan tool to confirm the code, inspect the brake pedal position sensor and its wiring, and test the circuit for proper voltage and continuity.
6. How do I fix the C0277 code on a 2018 GMC Sierra?
Repairs may involve replacing the brake pedal position sensor, repairing damaged wiring or connectors, or reprogramming the ABS module if necessary.
7. How much does it cost to fix the C0277 code on a 2018 GMC Sierra?
Repair costs can vary but typically range from $150 to $400, depending on whether the issue is with the sensor, wiring, or ABS module.
8. Can a failing brake pedal position sensor cause other problems?
Yes, a faulty sensor can impact the ABS, traction control, and stability systems, potentially reducing braking performance and vehicle safety.
9. Is the brake pedal position sensor difficult to replace on a 2018 GMC Sierra?
Replacing the sensor is generally straightforward for a skilled DIYer or mechanic, as it’s located near the brake pedal assembly, but proper calibration may be required.
10. Will clearing the C0277 code fix the problem?
Clearing the code without addressing the underlying issue will only temporarily remove the warning. The code will return if the fault is not resolved.
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