AutoCodes – GMC – B123E 2017 GMC Sierra

B123E 2017 GMC Sierra Code - Radio Keypad Button Signal Circuit

Quick Answer

The radio controls communicate radio control inputs directly to the radio through a discrete circuit for volume up, volume down, and power button. Common causes include Faulty Radio Controls, Radio Controls harness is open or shorted, Radio Controls 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: B123E 2017 GMC Sierra indicates Radio Keypad Button Signal Circuit.
Common causes: Common causes include Faulty Radio Controls, Radio Controls harness is open or shorted, Radio Controls 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 166

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 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B123E 2017 GMC Sierra Description

The radio controls communicate radio control inputs directly to the radio through a discrete circuit for volume up, volume down, and power button. It also uses a series of resistors through a signal circuit when the home, seek up, seek down and phone buttons are pressed. After receiving the message, the radio will perform the requested function. Messages communicated between the radio and the radio controls include the following: Button presses/knob rotations, Commands for the state of indicators, and Controls back-lighting. The Diagnostic Trouble Code (DTC) will be set when the radio detects an open/high resistance, short to voltage, or short to ground on the radio controls key signal circuit.

OBDII Code B123E 2017 GMC Sierra - Radio Keypad Button Signal Circuit - AutoCodes.com — B123E 2017 GMC Sierra Code - Radio Keypad Button Signal Circuit

What does this mean?

What are the Possible Causes of the DTC B123E 2017 GMC Sierra?

Faulty Radio Controls
Radio Controls harness is open or shorted
Radio Controls circuit poor electrical connection
Faulty Radio

How to Fix the DTC B123E 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 B123E 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 B123E 2017 GMC Sierra code?

Need more information on how to fix the B123E 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the 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 B123E 2017 GMC Sierra Code

1. What does the OBDII code B123E for a 2017 GMC Sierra mean?

The code B123E indicates a problem with the Radio Keypad Button Signal Circuit in the GMC Sierra.

2. What are the common symptoms of the B123E OBDII code in a 2017 GMC Sierra?

Common symptoms of this code may include non-functional radio controls on the steering wheel or dashboard, and the inability to change radio stations or volume using the keypad.

3. What are the possible causes of the B123E OBDII code in a 2017 GMC Sierra?

Possible causes of the B123E code include damaged wiring or connectors in the radio keypad circuit, a faulty radio keypad module, or a malfunctioning body control module.

4. How can I diagnose the B123E OBDII code in my 2017 GMC Sierra?

Diagnosing the B123E code involves inspecting the wiring and connectors in the radio keypad circuit, testing the radio keypad module, and checking for any related trouble codes in the vehicle's system.

5. Can I still drive my 2017 GMC Sierra with the B123E OBDII code present?

While it may be possible to drive the vehicle with the B123E code, it is recommended to address the issue promptly to avoid any inconvenience or potential safety concerns related to the radio controls.

6. What are some repair tips for fixing the B123E OBDII code in a 2017 GMC Sierra?

Repair tips for resolving the B123E code may include repairing or replacing damaged wiring, connectors, or components in the radio keypad circuit, and resetting the system after making the necessary repairs.

7. Do I need special tools to repair the B123E OBDII code in my 2017 GMC Sierra?

Depending on the exact cause of the B123E code, you may need basic hand tools, a multimeter for testing circuits, and potentially a diagnostic scan tool to reset the code after repairs are completed.

8. Can the B123E OBDII code in a 2017 GMC Sierra cause any other issues in the vehicle?

While the B123E code specifically relates to the radio keypad circuit, it is essential to address the underlying problem promptly to prevent any potential electrical issues or malfunctions in other vehicle systems.

9. How much does it typically cost to repair the B123E OBDII code in a 2017 GMC Sierra?

The cost of repairing the B123E code can vary depending on the exact cause of the issue, the labor rates in your area, and whether any parts need to be replaced. It is advisable to consult a professional technician for an accurate estimate.

10. Is it possible to reset the B123E OBDII code in a 2017 GMC Sierra without professional help?

While some OBDII codes can be reset by disconnecting the battery or using a diagnostic scan tool, addressing the underlying cause of the B123E code is crucial to prevent it from reoccurring. If you are unsure, it is best to seek professional assistance.