AutoCodes – GMC – C0280 2015 GMC Sierra

C0280 2015 GMC Sierra Code - Stability System Active Too Long

Quick Answer

The solenoid valves are integral parts of the brake pressure modulator. Common causes include Faulty Electronic Brake Control Module (EBCM) with Brake Pressure Modulator Valve (BPMV), Brake Pressure Modulator Valve harness is open or shorted, Brake Pressure Modulator Valve 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: C0280 2015 GMC Sierra indicates Stability System Active Too Long.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM) with Brake Pressure Modulator Valve (BPMV), Brake Pressure Modulator Valve harness is open or shorted, Brake Pressure Modulator Valve 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 178

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
Cost to Diagnose
FAQs
Comments
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Code C0280 2015 GMC Sierra Description

The solenoid valves are integral parts of the brake pressure modulator. The brake pressure modulator contains an isolation solenoid valve and a dump solenoid valve for each wheel. A traction/stability control supply solenoid valve and an isolation solenoid valve for each brake circuit. The solenoid valves are not engaged during normal system operation. When the ABS, the traction control, or the stability control operation is required the Electronic Brake Control Module (EBCM) turns the required solenoid ON. The Diagnostic Trouble Code (DTC) will be set due to the extended operation of the ABS, the traction control, or the stability control.

OBDII Code C0280 2015 GMC Sierra - Stability System Active Too Long - AutoCodes.com — C0280 2015 GMC Sierra Code - Stability System Active Too Long

What does this mean?

What are the Possible Causes of the DTC C0280 2015 GMC Sierra?

Faulty Electronic Brake Control Module (EBCM) with Brake Pressure Modulator Valve (BPMV)
Brake Pressure Modulator Valve harness is open or shorted
Brake Pressure Modulator Valve circuit poor electrical connection

How to Fix the DTC C0280 2015 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 C0280 2015 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 C0280 2015 GMC Sierra code?

Need more information on how to fix the C0280 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the 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 C0280 2015 GMC Sierra Code

1. What does OBDII code C0280 mean on a 2015 GMC Sierra?

Code C0280 indicates an issue with the Stability Control System, specifically that it has been active for an unusually long time, suggesting a possible fault in the system.

2. What are the common symptoms of code C0280 in a 2015 GMC Sierra?

Symptoms often include the "Service Stability System" warning on the dashboard, reduced traction control functionality, and potential loss of stability assist features.

3. What causes the C0280 code to appear on a 2015 GMC Sierra?

Common causes include a malfunctioning wheel speed sensor, a faulty steering angle sensor, hydraulic system issues in the ABS module, or wiring and connection problems.

4. Can I still drive my 2015 GMC Sierra with code C0280 active?

While the truck may still be drivable, the stability control system may not function properly, increasing the risk of losing control in slippery or emergency conditions.

5. How do I troubleshoot the C0280 code on a 2015 GMC Sierra?

Start by scanning for additional codes, checking wheel speed sensor data, inspecting wiring and connectors, and testing the ABS module for proper operation.

6. Is a wheel speed sensor the most common cause of the C0280 code?

Yes, a faulty or dirty wheel speed sensor is a frequent cause, as it can send incorrect data to the stability control system.

7. How much does it cost to repair a C0280 code on a 2015 GMC Sierra?

Repair costs vary depending on the issue, ranging from $100 for sensor cleaning/replacement to $1,000 or more if the ABS module needs replacement.

8. Can a bad steering angle sensor trigger the C0280 code?

Yes, a malfunctioning steering angle sensor can cause the stability control system to misinterpret the vehicleâ€™s movements, leading to this code.

9. How do I reset the C0280 code on a 2015 GMC Sierra?

After repairing the underlying issue, use an OBDII scanner to clear the code. If the problem persists, the code will reappear.

10. Should I take my 2015 GMC Sierra to a mechanic for the C0280 code?

If you are unable to diagnose or repair the issue yourself, itâ€™s recommended to have a professional mechanic inspect the vehicle to ensure the stability system operates correctly.