B127E GMC Code - Front Video Display Output Signal Malfunction
Quick Answer
The infotainment display and controls are separate components from the radio, combined into an assembly. Common causes include Faulty Front Video Display, Front Video Display harness is open or shorted, Front Video Display 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
- B127E GMC indicates Front Video Display Output Signal Malfunction.
- Common causes
- Common causes include Faulty Front Video Display, Front Video Display harness is open or shorted, Front Video Display 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 B127E GMC Description
Control information, touch communications, and dimming level for the display are communicated via a LIN serial data circuit to the Human Machine Interface Control Module.
If the Human Machine Interface Control Module detects the display is not responding to the output on the LVDS circuits, the Human Machine Interface Control Module sets the Diagnostic Trouble Code (DTC).
What are the Possible Causes of the DTC B127E GMC?
- Faulty Front Video Display
- Front Video Display harness is open or shorted
- Front Video Display circuit poor electrical connection
- Faulty Low Voltage Differential Signaling (LVDS) Cable
How to Fix the DTC B127E GMC?
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 B127E GMC 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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Information for Specific GMC Models
- B127E 2014 GMC Sierra — Front Video Display Output Signal Malfunction
- B127E 2015 GMC Sierra — Front Video Display Output Signal Malfunction
- B127E 2016 GMC Sierra — Front Video Display Output Signal Malfunction
- B127E 2017 GMC Sierra — Front Video Display Output Signal Malfunction
- B127E 2018 GMC Sierra — Front Video Display Output Signal Malfunction
Frequently Asked Questions about B127E GMC Code
1. What are the common symptoms of OBDII code B127E GMC?
The common symptoms of OBDII code B127E GMC, Front Video Display Output Signal Malfunction, include a blank or flickering display screen, distorted video output, or the screen not turning on at all.
2. What are the possible causes of OBDII code B127E GMC?
Possible causes of code B127E GMC include a faulty video display unit, loose or damaged wiring connections, a malfunctioning control module, or a software glitch.
3. How can I diagnose OBDII code B127E GMC?
Diagnosing code B127E GMC involves using a diagnostic scanner to retrieve the trouble code, inspecting the wiring connections for damage, testing the video display unit for functionality, and checking for any software updates available.
4. What are the repair options for OBDII code B127E GMC?
Repair options for code B127E GMC may include repairing or replacing the video display unit, repairing any damaged wiring connections, resetting the control module, or updating the software to resolve the issue.
5. Can I drive my vehicle with OBDII code B127E GMC?
It is not recommended to drive your vehicle with OBDII code B127E GMC as it may affect the functionality of the video display unit, which could impact your ability to view important information while driving.
6. How much does it cost to repair OBDII code B127E GMC?
The cost to repair OBDII code B127E GMC can vary depending on the specific cause of the issue, the labor rates in your area, and whether any parts need to be replaced. It is best to consult a professional mechanic for an accurate estimate.
7. Is OBDII code B127E GMC a serious issue?
While OBDII code B127E GMC is not considered a critical issue that affects the drivability of the vehicle, it can impact the convenience and safety features provided by the front video display unit. It is recommended to address the issue promptly.
8. Can I reset OBDII code B127E GMC myself?
You can attempt to reset OBDII code B127E GMC using a diagnostic scanner that has the capability to clear trouble codes. However, it is important to diagnose and address the underlying cause of the code to prevent it from reoccurring.
9. Will OBDII code B127E GMC cause my vehicle to fail an emissions test?
OBDII code B127E GMC is not directly related to emissions control systems, so it should not cause your vehicle to fail an emissions test. However, it is still recommended to address the code to ensure all systems are functioning properly.
10. How can I prevent OBDII code B127E GMC from occurring again in the future?
To prevent OBDII code B127E GMC from occurring again, it is important to perform regular maintenance on your vehicle, check the wiring connections periodically for damage, and ensure the video display unit is functioning correctly.
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