AutoCodesGMC – C0277 2014 GMC Sierra

C0277 2014 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 2014 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.
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Code Popularity 240
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 05, 2023
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Code C0277 2014 GMC Sierra Description

The brake pedal position sensor is used to sense the action of the driver's application of the brake pedal. The brake pedal position sensor provides an analog voltage signal that will increase as the brake pedal is applied. The Body Control Module (BCM) provides a low reference signal and a 5 V reference voltage to the brake pedal position sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied, the BCM will apply battery voltage to the left and right stop lamp control circuits as well as the center high-mounted stop lamp relay control circuit illuminating the left and right stop lamps and the center high mounted stop lamp. The Diagnostic Trouble Code (DTC) will be set when the BCM detects an improper voltage in the brake pedal position sensor 5 V reference circuit.
OBDII Code C0277 2014 GMC Sierra - Brake Pedal Position Sensor Circuit - AutoCodes.com
C0277 2014 GMC Sierra Code - Brake Pedal Position Sensor Circuit

What are the Possible Causes of the DTC C0277 2014 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 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0277 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.

Need more information about the C0277 2014 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 C0277 2014 GMC Sierra Code

What does the OBDII code C0277 mean on a 2014 GMC Sierra?

Code C0277 indicates an issue with the Brake Pedal Position Sensor Circuit, which monitors the position of the brake pedal for the vehicle's braking and stability systems.

What are the common symptoms of code C0277 in a 2014 GMC Sierra?

Symptoms may include the ABS or traction control warning light activating, erratic braking performance, or reduced functionality of stability control systems.

What causes code C0277 to appear in a 2014 GMC Sierra?

Common causes include a faulty brake pedal position sensor, damaged wiring or connectors in the sensor circuit, or issues with the vehicle’s electronic control module (ECM).

How is the brake pedal position sensor related to braking performance?

The sensor provides critical data to the vehicle’s control systems, helping to regulate ABS, traction control, and stability features based on brake pedal input.

Can code C0277 affect the safety of my 2014 GMC Sierra?

Yes, it can compromise the effectiveness of ABS and stability control systems, potentially reducing the vehicle’s ability to maintain traction and stability under certain conditions.

How do I diagnose code C0277 in a 2014 GMC Sierra?

Diagnosis typically involves scanning for stored codes, visually inspecting the brake pedal position sensor and its wiring, and testing the sensor with a multimeter for proper operation.

Can I drive my 2014 GMC Sierra with code C0277 active?

While the vehicle may still be drivable, it’s not recommended due to potential issues with braking and stability control systems that could impact safety.

How do I fix code C0277 on a 2014 GMC Sierra?

Repairs may include replacing the brake pedal position sensor, repairing damaged wiring or connectors, or reprogramming the ECM if necessary.

How much does it cost to fix code C0277 on a 2014 GMC Sierra?

Repair costs can range from $100 to $300, depending on whether the sensor needs replacement or if there are wiring issues that require additional labor.

Can a faulty brake pedal position sensor cause other codes to appear?

Yes, issues with the sensor can trigger related codes for ABS, traction control, or stability control systems, as these rely on accurate brake pedal position data.

Discuss the causes and fixes for C0277 2014 GMC Sierra OBDII Code

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