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B3109 2016 GMC Sierra Code - Keyless Entry Transmitter 1 Battery

Quick Answer

The B3109 diagnostic trouble code (DTC) for a 2016 GMC Sierra specifically relates to the Keyless Entry Transmitter 1 Battery. Common causes include Low battery in the keyless entry transmitter, Faulty keyless entry transmitter, Electrical issues in the keyless entry system. 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
B3109 2016 GMC Sierra indicates Keyless Entry Transmitter 1 Battery.
Common causes
Common causes include Low battery in the keyless entry transmitter, Faulty keyless entry transmitter, Electrical issues in the keyless entry system.
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 13, 2024
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Code B3109 2016 GMC Sierra Description

The B3109 diagnostic trouble code (DTC) for a 2016 GMC Sierra specifically relates to the Keyless Entry Transmitter 1 Battery. This code indicates that there is an issue with the battery in the keyless entry transmitter for the vehicle. The keyless entry transmitter is a crucial component that allows the driver to remotely lock and unlock the vehicle, as well as possibly control other functions such as the alarm system or trunk release.

OBDII Code B3109 2016 GMC Sierra - Keyless Entry Transmitter 1 Battery
B3109 2016 GMC Sierra Code - Keyless Entry Transmitter 1 Battery

Common Causes of B3109 2016 GMC Sierra

  1. Low battery in the keyless entry transmitter.
  2. Faulty keyless entry transmitter.
  3. Electrical issues in the keyless entry system.
  4. Interference from other electronic devices.

Symptoms of B3109 2016 GMC Sierra

  1. Inability to lock or unlock the vehicle remotely.
  2. Keyless entry system not responding to button presses.
  3. Reduced range of the keyless entry transmitter.
  4. Intermittent functionality of the keyless entry system.

How to Fix B3109 2016 GMC Sierra

  1. Replace the battery in the keyless entry transmitter with a new one.
  2. Test the keyless entry system to ensure proper functionality.
  3. If the issue persists, consider replacing the keyless entry transmitter.
  4. Check for any electrical issues in the keyless entry system and repair as necessary.
  5. Ensure that there is no interference from other electronic devices affecting the keyless entry system.

Cost to Fix B3109 2016 GMC Sierra

The cost of repairing a keyless entry transmitter 1 battery issue can vary depending on the specific circumstances and the need for replacement parts. Typically, the cost of a new battery for the keyless entry transmitter ranges from $5 to $20. If a replacement keyless entry transmitter is required, the cost can range from $50 to $200 or more, depending on the make and model of the vehicle. Labor costs for diagnosis and repair can range from $80 to $150 per hour. It is recommended to consult with a qualified mechanic or dealership for an accurate cost estimate based on the specific vehicle and location.

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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 B3109 2016 GMC Sierra Code

1. What does OBDII code B3109 for a 2016 GMC Sierra indicate?

Code B3109 specifically relates to the Keyless Entry Transmitter 1 Battery in a 2016 GMC Sierra.

2. What are some common symptoms of OBDII code B3109 in a 2016 GMC Sierra?

Common symptoms include issues with the keyless entry system, such as the remote not working or needing to be pressed multiple times to unlock the vehicle.

3. What are possible causes of OBDII code B3109 in a 2016 GMC Sierra?

The most common cause is a weak or dead battery in the keyless entry transmitter. Other causes could include a faulty transmitter or issues with the vehicle's receiver.

4. How can I diagnose the OBDII code B3109 in my 2016 GMC Sierra?

To diagnose this code, start by replacing the battery in the keyless entry transmitter. If the issue persists, consider testing the transmitter's functionality or seeking professional help.

5. Can I repair OBDII code B3109 in a 2016 GMC Sierra myself?

Yes, replacing the battery in the keyless entry transmitter is a simple DIY repair. If the issue persists after replacing the battery, you may need to consult a professional for further diagnosis.

6. How often should I replace the battery in the keyless entry transmitter of my 2016 GMC Sierra?

It is recommended to replace the battery in the keyless entry transmitter every 1-2 years or when you notice a decrease in range or functionality.

7. Are there any tips to extend the battery life of the keyless entry transmitter in my 2016 GMC Sierra?

To extend battery life, avoid keeping the transmitter near electronic devices that may interfere with its signal, and store it in a cool, dry place when not in use.

8. Will OBDII code B3109 affect the overall performance of my 2016 GMC Sierra?

While the code itself does not directly impact the vehicle's performance, it can be inconvenient if the keyless entry system is not functioning properly.

9. Can OBDII code B3109 cause any safety concerns in my 2016 GMC Sierra?

There are no direct safety concerns associated with this code, but a malfunctioning keyless entry system could lead to inconvenience or potential security issues.

10. Is it necessary to clear OBDII code B3109 from the system after replacing the keyless entry transmitter battery in my 2016 GMC Sierra?

After replacing the battery and resolving the issue, you can clear the code using an OBDII scanner to ensure it does not trigger any false alerts in the future.

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