B302A 2017 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 2017 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 2017 GMC Sierra Description
How to Fix the DTC B302A 2017 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 2017 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.
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Frequently Asked Questions about B302A 2017 GMC Sierra Code
What does the OBDII code B302A mean for my 2017 GMC Sierra?
The code B302A indicates that the Mobile Telephone Communications Interface has requested immobilization, which usually relates to issues with the vehicle’s Bluetooth or communication systems.
What symptoms might I experience with the B302A code?
Common symptoms include the inability to start the vehicle, problems with Bluetooth connectivity, or malfunctions in the infotainment system.
What could cause the B302A code to trigger?
Potential causes include a malfunctioning mobile telephone interface, software glitches, a dead battery in the key fob, or issues with the vehicle's security system.
How can I troubleshoot the B302A code?
Start by checking the vehicle’s battery and key fob, then inspect the mobile telephone interface for any visible damage or disconnections. Additionally, updating the vehicle’s software may resolve the issue.
What repair options are available for the B302A code?
Repair options may include replacing the mobile telephone communications interface, reprogramming or updating the software, or addressing any electrical issues in the vehicle's wiring.
Is it safe to drive my vehicle with the B302A code present?
It may not be safe to drive if the vehicle is immobilized. If the code is present but the vehicle starts, you should have it checked as soon as possible to avoid potential safety issues.
Can I reset the B302A code myself?
Yes, you can attempt to clear the code using an OBDII scanner, but if the underlying issue is not resolved, the code may return.
Will clearing the B302A code fix the problem?
Clearing the code may temporarily stop the warning light, but it does not fix the underlying issue. It's important to diagnose and address the root cause.
Should I take my GMC Sierra to a dealership for the B302A code?
While you can take it to a dealership for a thorough diagnosis, many independent mechanics familiar with GM vehicles can also effectively address the B302A code.
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