AutoCodes – GMC – B302A 2014 GMC Sierra

B302A 2014 GMC Sierra Code - Mobile Telephone Communications Interface Requested Immobilization

Quick Answer

As part of the vehicle telematics enhanced services, a request may be sent to the Body Control Module (BCM) to disable vehicle starting. Common causes include Contact OnStar. 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
B302A 2014 GMC Sierra indicates Mobile Telephone Communications Interface Requested Immobilization.
Common causes
Common causes include Contact OnStar.
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 155
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 02, 2023
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Code B302A 2014 GMC Sierra Description

As part of the vehicle telematics enhanced services, a request may be sent to the Body Control Module (BCM) to disable vehicle starting. If a valid message is received by the BCM requesting that starting be disabled, the start enable message will not be sent to the Engine Control Module (ECM).
OBDII Code B302A 2014 GMC Sierra - Mobile Telephone Communications Interface Requested Immobilization - AutoCodes.com
B302A 2014 GMC Sierra Code - Mobile Telephone Communications Interface Requested Immobilization

What are the Possible Causes of the DTC B302A 2014 GMC Sierra?

  • Contact OnStar

How to Fix the DTC B302A 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 B302A 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 B302A 2014 GMC Sierra code?

Need more information on how to fix the B302A 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B302A 2014 GMC Sierra 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 B302A 2014 GMC Sierra Code

1. What does the OBDII code B302A mean for a 2014 GMC Sierra?

The B302A code indicates a Mobile Telephone Communications Interface Requested Immobilization issue in the vehicle's system.

2. What are the common symptoms of OBDII code B302A in a 2014 GMC Sierra?

Common symptoms of this code may include the inability to start the vehicle, loss of power, and warning lights on the dashboard related to the immobilization system.

3. What can cause the OBDII code B302A to trigger in a 2014 GMC Sierra?

The B302A code can be triggered by faults in the mobile telephone communications interface module, wiring issues, or software malfunctions within the vehicle's immobilization system.

4. How can I diagnose the OBDII code B302A in my 2014 GMC Sierra?

Diagnosing the B302A code typically requires using a professional OBDII scanner to retrieve the specific error codes, followed by a detailed inspection of the mobile telephone interface module and related wiring.

5. Is it safe to continue driving my 2014 GMC Sierra with the B302A code active?

It is not recommended to drive the vehicle with the B302A code active, as it may lead to potential safety hazards or further damage to the immobilization system.

6. Can I reset the OBDII code B302A in my 2014 GMC Sierra on my own?

While you can attempt to clear the code using an OBDII scanner, it is essential to address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it typically cost to repair the OBDII code B302A in a 2014 GMC Sierra?

The cost of repairing the B302A code can vary depending on the root cause of the issue, but it may involve replacing the mobile telephone interface module or addressing wiring faults, which can range from moderate to expensive.

8. Are there any DIY tips for troubleshooting the OBDII code B302A in a 2014 GMC Sierra?

DIY tips for troubleshooting the B302A code include checking the wiring connections to the mobile telephone interface module, ensuring proper software updates, and consulting the vehicle's manual for specific troubleshooting steps.

9. Can a mechanic help me fix the OBDII code B302A in my 2014 GMC Sierra?

Yes, a qualified mechanic with experience in diagnosing and repairing vehicle immobilization systems can help identify and resolve the issues causing the B302A code in your GMC Sierra.

10. How can I prevent the OBDII code B302A from appearing in my 2014 GMC Sierra in the future?

Regular maintenance, including checking the mobile telephone interface module and associated wiring, keeping software updated, and addressing any warning signs promptly, can help prevent the recurrence of the B302A code in your vehicle.

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