AutoCodes – GMC – C1268 GMC

C1268 GMC Code - Right Rear Outlet Valve Solenoid Malfunction

Quick Answer

The system relay is energized when the ignition is ON. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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
C1268 GMC indicates Right Rear Outlet Valve Solenoid Malfunction.
Common causes
Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,030
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 31, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code C1268 GMC Description

The system relay is energized when the ignition is ON. The system relay supplies voltage to the valve solenoids and the pump motor. This voltage is referred to as the system voltage. The Electronic Brake Control Module (EBCM) microprocessor activates the valve solenoids by grounding the control circuit. The Solenoid Valve circuit is internal to the EBCM. The EBCM sets the OBDII code when the commanded state of the driver and the actual state of the control circuit do not match.
OBDII Code C1268 GMC - Right Rear Outlet Valve Solenoid Malfunction - AutoCodes.com
C1268 GMC Code - Right Rear Outlet Valve Solenoid Malfunction

What are the Possible Causes of the DTC C1268 GMC?

  • Faulty Electronic Brake Control Module (EBCM)
  • Electronic Brake Control Module (EBCM) harness is open or shorted
  • Electronic Brake Control Module (EBCM) circuit poor electrical connection

How to Fix the DTC C1268 GMC?

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 C1268 GMC 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 C1268 GMC code?

Need more information on how to fix the C1268 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1268 GMC code diagnosed by a professional: Find a repair shop in your area

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 C1268 GMC Code

1. What does the OBDII code C1268 mean on a GMC vehicle?

C1268 indicates a malfunction in the right rear outlet valve solenoid, which is part of the ABS (Anti-lock Braking System) that regulates brake pressure to prevent wheel lockup.

2. What are the symptoms of the C1268 code on a GMC?

Common symptoms include the ABS warning light turning on, reduced braking performance, or the ABS system not functioning properly during hard braking.

3. What causes the C1268 code to appear?

The code can be caused by a faulty right rear outlet valve solenoid, damaged wiring or connectors, a failed ABS module, or corrosion in the electrical connections.

4. Can I still drive my GMC with the C1268 code active?

While the vehicle is drivable, the ABS system may not function correctly, increasing the risk of skidding or wheel lockup during emergency braking.

5. How do I diagnose the C1268 code on my GMC?

Diagnosis involves checking the ABS module for trouble codes, inspecting the wiring and connectors to the right rear outlet valve, and testing the solenoid for proper operation.

6. How can I fix the C1268 code on a GMC vehicle?

Repairs may include replacing the right rear outlet valve solenoid, repairing or replacing damaged wiring or connectors, or addressing issues with the ABS module.

7. What tools are needed to diagnose the C1268 code?

You'll need an OBDII scanner capable of reading ABS codes, a multimeter for testing electrical circuits, and possibly a service manual for your specific GMC model.

8. How much does it cost to repair the C1268 code on a GMC?

Repair costs vary depending on the issue. Replacing the solenoid or repairing wiring may cost $100 to $300, while ABS module replacement can exceed $500.

9. Can I clear the C1268 code without fixing the issue?

Clearing the code without addressing the root cause will only temporarily remove the error, and it will likely return once the problem is detected again.

10. Is the C1268 code covered under warranty on my GMC?

Coverage depends on your vehicle's warranty terms. Check if your ABS system components are included under the powertrain or extended warranty.

Discuss the causes and fixes for C1268 GMC OBDII Code

Code C1268 GMC comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play