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Engine-Codes – GMC – B123E 2017 GMC Sierra

B123E 2017 GMC Sierra Code - Radio Keypad Button Signal Circuit

Quick Answer

The B123E code for a 2017 GMC Sierra indicates a problem with the radio keypad button signal circuit. Common causes include Loose or damaged wiring in the radio keypad button signal circuit, Faulty radio control module, Corrosion or debris affecting the connectors in the circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B123E 2017 GMC Sierra indicates Radio Keypad Button Signal Circuit.
Common causes
Common causes include Loose or damaged wiring in the radio keypad button signal circuit, Faulty radio control module, Corrosion or debris affecting the connectors in the circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code B123E 2017 GMC Sierra Description

The B123E code for a 2017 GMC Sierra indicates a problem with the radio keypad button signal circuit. This code is typically triggered when the vehicle's onboard computer detects a malfunction in the circuit responsible for transmitting signals from the radio keypad buttons to the radio control module. This can lead to issues with controlling the radio functions using the keypad buttons, such as changing stations, adjusting volume, or accessing specific features.

OBDII Code B123E 2017 GMC Sierra - Radio Keypad Button Signal Circuit
B123E 2017 GMC Sierra Code - Radio Keypad Button Signal Circuit

Common Causes of B123E 2017 GMC Sierra

  1. Loose or damaged wiring in the radio keypad button signal circuit
  2. Faulty radio control module
  3. Corrosion or debris affecting the connectors in the circuit
  4. Water damage to the radio keypad buttons
  5. Electrical issues in the vehicle's wiring system

Symptoms of B123E 2017 GMC Sierra

  1. Unresponsive radio keypad buttons
  2. Inability to change radio stations or adjust volume
  3. Erratic behavior of the radio controls
  4. Illumination of the radio keypad buttons not functioning properly
  5. Error message displayed on the radio unit

How to Fix B123E 2017 GMC Sierra

  1. Begin by visually inspecting the wiring and connectors in the radio keypad button signal circuit for any signs of damage or corrosion.
  2. Check the radio control module for any faults or malfunctions that may be causing the issue.
  3. Test the functionality of the radio keypad buttons to determine if they are transmitting signals properly.
  4. Replace any damaged wiring, connectors, or components in the circuit as needed.
  5. Clear the diagnostic trouble codes from the vehicle's computer and test the radio system to ensure the issue has been resolved.

Cost to Fix B123E 2017 GMC Sierra

The typical repair costs for addressing the B123E code on a 2017 GMC Sierra can vary depending on the extent of the issue and the specific components that need to be repaired or replaced. In general, the cost of parts for this repair could range from $50 to $200, while labor costs could add an additional $100 to $300 to the total bill. Keep in mind that these are rough estimates, and actual costs may differ based on factors such as location, labor rates, and the availability of parts. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.

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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.

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