AutoCodes – GMC – C0242 2015 GMC Sierra

C0242 2015 GMC Sierra Code - Engine Control Module Indicated Traction Control Malfunction

Quick Answer

The Electronic Brake Control Module (EBCM) and the Engine Control Module (ECM) simultaneously control the traction control. Common causes include Faulty Electronic Brake Control Module (EBCM), EBCM Harness is open or shorted, 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: C0242 2015 GMC Sierra indicates Engine Control Module Indicated Traction Control Malfunction.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), EBCM Harness is open or shorted, 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.

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Code Popularity 347

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 28, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0242 2015 GMC Sierra Description

The Electronic Brake Control Module (EBCM) and the Engine Control Module (ECM) simultaneously control the traction control. The Electronic Brake Control Module sends a serial data message to the Engine Control Module requesting torque reduction. When certain Engine Control Module DTCs are set, the Engine Control Module will not be able to perform the torque reduction for traction control. A serial data message is sent to the Electronic Brake Control Module indicating that traction control is not allowed. The Diagnostic Trouble Code (DTC) engine control module detects a fault that prevents it from performing a traction control function and sends a serial data message to the electronic brake control module indicating that torque reduction is not allowed.

OBDII Code C0242 2015 GMC Sierra - Engine Control Module Indicated Traction Control Malfunction - AutoCodes.com — C0242 2015 GMC Sierra Code - Engine Control Module Indicated Traction Control Malfunction

What does this mean?

What are the Possible Causes of the DTC C0242 2015 GMC Sierra?

Faulty Electronic Brake Control Module (EBCM)
EBCM Harness is open or shorted
EBCM Circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC C0242 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 C0242 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 C0242 2015 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 C0242 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code C0242 on a 2015 GMC Sierra?

- Common symptoms include the traction control light illuminating on the dashboard, reduced traction control functionality, and potential issues with stability control.

2. What does the OBDII code C0242 for a 2015 GMC Sierra indicate?

- The code C0242 indicates a malfunction in the traction control system as detected by the Engine Control Module (ECM).

3. What are the possible causes of OBDII code C0242 on a 2015 GMC Sierra?

- Potential causes include faulty wheel speed sensors, damaged wiring or connectors in the traction control system, a malfunctioning ABS module, or issues with the ECM itself.

4. How can I diagnose the OBDII code C0242 on my 2015 GMC Sierra?

- Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific details of the fault, checking the wheel speed sensor readings, inspecting wiring connections, and testing the traction control components.

5. What are some tips for repairing OBDII code C0242 on a 2015 GMC Sierra?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing faulty wheel speed sensors, recalibrating the traction control system, or resetting the fault code after addressing the underlying issue.

6. Can I still drive my 2015 GMC Sierra with OBDII code C0242?

- It is generally not recommended to drive the vehicle with an active traction control malfunction, as it can affect the vehicle's stability and traction control systems. Address the issue promptly to ensure safe operation.

7. How serious is OBDII code C0242 on a 2015 GMC Sierra?

- While the severity may vary, a traction control malfunction indicated by this code can impact the vehicle's handling and safety systems. It's essential to address the problem to maintain optimal performance and safety.

8. Is it possible to reset OBDII code C0242 on a 2015 GMC Sierra without repairs?

- Resetting the code without addressing the underlying issue may clear the warning temporarily, but the problem is likely to reoccur. It is recommended to diagnose and repair the cause of the fault.

9. Can extreme weather conditions trigger OBDII code C0242 on a 2015 GMC Sierra?

- Yes, extreme weather conditions like heavy snow, ice, or water splashes can potentially affect the traction control system and trigger the C0242 code. Ensure the system is properly sealed and protected.

10. How much does it typically cost to repair OBDII code C0242 on a 2015 GMC Sierra?

- Repair costs for this code can vary depending on the specific cause of the malfunction. Expenses may include parts replacement, labor costs, and diagnostic fees, so it's advisable to consult a professional for an accurate estimate.