AutoCodes – GMC – B127E 2017 GMC Sierra

B127E 2017 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 2017 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.

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Code Popularity 851

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B127E 2017 GMC Sierra Description

The infotainment display and controls are separate components from the radio, combined into an assembly. The assembly is supplied with battery voltage and ground from the vehicle harness. The Human Machine Interface Control Module communicates digital video data for an on-screen display through a dedicated cable containing the Low Voltage Differential Signaling (LVDS) data circuits.
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).

OBDII Code B127E 2017 GMC Sierra - Front Video Display Output Signal Malfunction - AutoCodes.com — B127E 2017 GMC Sierra Code - Front Video Display Output Signal Malfunction

What does this mean?

What are the Possible Causes of the DTC B127E 2017 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 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B127E 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.

Need more information about the B127E 2017 GMC Sierra code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B127E 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code B127E in a 2017 GMC Sierra?

- Common symptoms include a malfunctioning front video display, a blank or distorted screen, or complete loss of video signal.

2. What does the OBDII code B127E indicating a Front Video Display Output Signal Malfunction mean in a 2017 GMC Sierra?

- This code indicates a problem with the output signal from the front video display in the vehicle.

3. What are the possible causes of the Front Video Display Output Signal Malfunction in a 2017 GMC Sierra?

- Possible causes include a faulty front video display unit, damaged wiring or connectors, or a malfunctioning control module.

4. How can I diagnose the Front Video Display Output Signal Malfunction in my 2017 GMC Sierra?

- Diagnosing this issue typically involves checking the connections, wiring, and the front video display unit itself for any visible damage or issues.

5. Can I still drive my 2017 GMC Sierra with the B127E code present?

- It is generally safe to drive the vehicle with this code, but it's recommended to address the issue promptly to ensure proper functionality of the front video display.

6. How can I repair the Front Video Display Output Signal Malfunction in my 2017 GMC Sierra?

- Repair options may include replacing the front video display unit, repairing any damaged wiring or connectors, or reprogramming the control module.

7. Is it possible to reset the B127E OBDII code in a 2017 GMC Sierra without fixing the issue?

- While you can reset the code, it is not recommended as the underlying problem causing the code will persist and may affect the proper functioning of the front video display.

8. Are there any DIY fixes for the Front Video Display Output Signal Malfunction in a 2017 GMC Sierra?

- DIY fixes may include checking and securing connections, inspecting for visible damage, or replacing the front video display unit if necessary.

9. How much does it typically cost to repair the B127E code in a 2017 GMC Sierra?

- The cost of repair can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can a mechanic easily resolve the Front Video Display Output Signal Malfunction in a 2017 GMC Sierra?

- A qualified mechanic should be able to diagnose and repair the issue efficiently, ensuring the proper functioning of the front video display in the vehicle.