B127E 2015 GMC Sierra 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 2015 GMC Sierra 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 2015 GMC Sierra 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 2015 GMC Sierra?
- 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 2015 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B127E 2015 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 B127E 2015 GMC Sierra Code
1. What are the common symptoms of OBDII code B127E in a 2015 GMC Sierra?
The common symptoms include a malfunctioning front video display, a blank screen, distorted images, or no video output.
2. What can cause the Front Video Display Output Signal Malfunction (B127E) in a 2015 GMC Sierra?
Possible causes of B127E in a 2015 GMC Sierra include a faulty video display unit, loose connections, damaged wiring, or a defective control module.
3. How can I diagnose the Front Video Display Output Signal Malfunction in my 2015 GMC Sierra?
Diagnosing B127E involves checking the connections, inspecting the wiring for damage, testing the video display unit, and using a scan tool to retrieve and interpret the trouble code.
4. Can a DIY enthusiast repair the B127E code in a 2015 GMC Sierra?
While some simple fixes like checking connections and wiring can be done by a DIY enthusiast, repairing B127E might require specialized tools and expertise, especially if it involves replacing components.
5. Is it safe to continue driving my 2015 GMC Sierra with the B127E trouble code?
It is not recommended to drive the vehicle with the B127E code unresolved, as it can affect the functionality of the front video display and potentially lead to other electrical issues.
6. How much does it cost to repair the Front Video Display Output Signal Malfunction in a 2015 GMC Sierra?
The cost of repairing B127E can vary depending on the exact cause of the issue, the parts needed, labor costs, and whether the repair is done at a dealership or an independent repair shop.
7. Can resetting the OBDII system clear the B127E trouble code in a 2015 GMC Sierra?
Resetting the OBDII system may temporarily clear the trouble code, but if the underlying issue causing B127E is not addressed, the code is likely to reappear.
8. Are there any recalls or technical service bulletins related to the B127E code in a 2015 GMC Sierra?
It's advisable to check with a GMC dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to the B127E trouble code in your specific vehicle.
9. Will fixing the B127E code improve the overall performance of my 2015 GMC Sierra?
Fixing the B127E code will mainly restore the proper functioning of the front video display system and ensure the vehicle's electronic systems work as intended, but it may not directly impact performance.
10. How can I prevent the Front Video Display Output Signal Malfunction (B127E) from occurring in my 2015 GMC Sierra in the future?
Regularly checking and maintaining the video display system, ensuring proper connections, and addressing any electrical issues promptly can help prevent the recurrence of the B127E trouble code in your GMC Sierra.
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