AutoCodes – GMC – C0277 2017 GMC Sierra

C0277 2017 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 2017 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 299

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 05, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C0277 2017 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 2017 GMC Sierra - Brake Pedal Position Sensor Circuit - AutoCodes.com — C0277 2017 GMC Sierra Code - Brake Pedal Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC C0277 2017 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 2017 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 does this mean?

Code Tech Notes

C0277:06 Brake Pedal Position Sensor Circuit Low Voltage/Open
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 2017 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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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 2017 GMC Sierra Code

1. What does the OBDII code C0277 mean on a 2017 GMC Sierra?

C0277 indicates an issue with the Brake Pedal Position Sensor Circuit, which monitors the position of the brake pedal and communicates with the vehicleâ€™s control modules.

2. What are the symptoms of code C0277 on a 2017 GMC Sierra?

Common symptoms include the ABS or traction control warning light illuminating, unresponsive cruise control, or irregular brake light functionality.

3. What causes the C0277 code to appear on a 2017 GMC Sierra?

Potential causes include a faulty brake pedal position sensor, wiring issues (e.g., damaged or corroded wires), a loose connection, or a malfunctioning ABS control module.

4. Can I drive my 2017 GMC Sierra with the C0277 code?

While the vehicle may still be drivable, itâ€™s not recommended to ignore this code as it could affect braking system performance and features like ABS and traction control.

5. How do you diagnose the C0277 code on a 2017 GMC Sierra?

Diagnosis involves scanning for additional codes, inspecting the brake pedal position sensor and its wiring, and testing the sensorâ€™s voltage and signal output.

6. How do you fix the C0277 code on a 2017 GMC Sierra?

Repairs may include replacing the brake pedal position sensor, repairing or replacing damaged wiring, cleaning corroded connections, or reprogramming the ABS module if necessary.

7. How much does it cost to repair the C0277 code on a 2017 GMC Sierra?

Repair costs vary but typically range from $100 to $300, depending on whether the sensor, wiring, or module needs attention.

8. Can a faulty brake pedal position sensor cause other issues?

Yes, a faulty sensor can impact ABS, traction control, cruise control, and brake light operation, leading to reduced safety and drivability.

9. How can I prevent the C0277 code from reoccurring?

Regular maintenance, inspecting wiring for damage, and ensuring proper sensor calibration can help prevent this issue.

10. Does the C0277 code require professional repair, or can I fix it myself?

If youâ€™re experienced with electrical diagnostics and have the proper tools, you may be able to fix it yourself. Otherwise, itâ€™s recommended to seek professional assistance.