B127D 2017 Chevrolet Silverado Code - Microphone 3 Input Signal Circuit
Quick Answer
The active noise cancellation system uses three microphones in the vehicle headliner: one above each front seating position, and one above the rear seat. Common causes include Faulty Radio Volume Compensator Interior Noise Microphone, Radio Volume Compensator Interior Noise Microphone harness is open or shorted, Radio Volume Compensator Interior Noise Microphone circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- B127D 2017 Chevrolet Silverado indicates Microphone 3 Input Signal Circuit.
- Common causes
- Common causes include Faulty Radio Volume Compensator Interior Noise Microphone, Radio Volume Compensator Interior Noise Microphone harness is open or shorted, Radio Volume Compensator Interior Noise Microphone circuit poor electrical connection.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code B127D 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC B127D 2017 Chevrolet Silverado?
- Faulty Radio Volume Compensator Interior Noise Microphone
- Radio Volume Compensator Interior Noise Microphone harness is open or shorted
- Radio Volume Compensator Interior Noise Microphone circuit poor electrical connection
- Faulty Audio Amplifier
How to Fix the DTC B127D 2017 Chevrolet Silverado?
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 B127D 2017 Chevrolet Silverado 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 B127D 2017 Chevrolet Silverado Code
1. What does the OBDII code B127D mean on a 2017 Chevrolet Silverado?
B127D indicates an issue with the Microphone 3 Input Signal Circuit, typically related to a fault in the wiring, connection, or the microphone itself.
2. What are the symptoms of code B127D in a 2017 Chevrolet Silverado?
Common symptoms include poor voice recognition performance, malfunctioning hands-free calling, or no audio input from the third microphone.
3. What causes the B127D code to appear?
The code can be triggered by a faulty microphone, damaged wiring or connections in the circuit, or a problem with the infotainment system.
4. Can I still drive my Silverado with the B127D code active?
Yes, the vehicle is still drivable, but hands-free communication and voice commands may not function properly.
5. How do you diagnose the B127D code on a 2017 Chevrolet Silverado?
A technician will inspect the microphone, check the wiring and connections for damage or corrosion, and use a diagnostic scanner to confirm the fault.
6. How can I fix the B127D code in my Silverado?
Repairs may include replacing the faulty microphone, repairing damaged wiring, or updating the infotainment system software.
7. Where is Microphone 3 located in a 2017 Chevrolet Silverado?
Microphone 3 is typically located in the headliner near the driver or passenger area, depending on the configuration of the vehicle’s audio system.
8. How much does it cost to repair the B127D code on a Chevrolet Silverado?
Repair costs can vary, but replacing a microphone might cost $50-$150 for parts, plus labor charges if done at a service center.
9. Can a software update fix the B127D code?
In some cases, a software update to the infotainment system might resolve the issue if it’s caused by a programming error.
10. Do I need to clear the B127D code after repairs?
Yes, after completing repairs, the code should be cleared using a diagnostic scanner to ensure the issue is resolved.
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