B302A 2018 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 2018 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.
Code B302A 2018 GMC Sierra Description
How to Fix the DTC B302A 2018 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
2. Press the blue OnStar button and ask the advisor to be transferred to the stolen vehicle team to verify the vehicle account has been updated.
3. Verify that OnStar is aware the vehicle has been recovered and that the vehicle account has been updated. If OnStar has not been notified that the vehicle has been recovered Contact the customer and advise them that for security purposes, they must contact OnStar and the law enforcement agency to update the vehicle account. If the account has been properly updated go to step 4.
4. Once the vehicle account has been updated and the start disable request has been removed, DTC B302A will transition to a history DTC. Clear the DTC history.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B302A 2018 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 2018 GMC Sierra code?
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Frequently Asked Questions about B302A 2018 GMC Sierra Code
1. What are the common symptoms of OBDII code B302A in a 2018 GMC Sierra related to the Mobile Telephone Communications Interface Requested Immobilization?
The common symptoms include the inability to start the vehicle, intermittent starting issues, or a message on the dashboard indicating a problem with the immobilization system.
2. What can cause the OBDII code B302A to trigger in a 2018 GMC Sierra?
The code B302A is typically triggered when there is a communication error between the mobile telephone communications interface module and the vehicle's immobilization system.
3. How serious is the OBDII code B302A in a 2018 GMC Sierra?
While the code itself may not pose an immediate safety risk, it can prevent the vehicle from starting or cause starting issues, which can be inconvenient and potentially leave you stranded.
4. How can I diagnose and repair OBDII code B302A in my 2018 GMC Sierra?
Diagnosing and repairing this code may require specialized diagnostic equipment and knowledge of the vehicle's immobilization system. It is recommended to consult a professional mechanic or dealership for proper diagnosis and repair.
5. Can I reset the OBDII code B302A in my 2018 GMC Sierra on my own?
While you may be able to clear the code using an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from recurring. Consult a professional for proper diagnosis and repair.
6. Are there any DIY tips to troubleshoot OBDII code B302A in a 2018 GMC Sierra?
You can start by checking the connections and wiring related to the mobile telephone communications interface module and the immobilization system. However, for a thorough diagnosis and repair, it is best to seek professional help.
7. Is it safe to drive my 2018 GMC Sierra with the OBDII code B302A present?
It is not recommended to drive the vehicle with the code B302A present, as it can lead to potential starting issues or complete immobilization of the vehicle.
8. How much does it typically cost to repair OBDII code B302A in a 2018 GMC Sierra?
The cost of repairing this code can vary depending on the underlying issue causing it. It is best to get a diagnostic from a professional to determine the exact repair cost.
9. Can extreme weather conditions affect the triggering of OBDII code B302A in a 2018 GMC Sierra?
Extreme weather conditions, such as extreme cold or heat, can potentially affect the performance of the mobile telephone communications interface module, which may lead to the triggering of the code B302A.
10. Is the OBDII code B302A specific to 2018 GMC Sierra models, or can it occur in other vehicles?
While the specific code B302A may be unique to GMC Sierra models, similar communication errors between mobile telephone interfaces and immobilization systems can occur in other vehicles as well.
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