AutoCodes – GMC – B3106 2018 GMC Sierra

B3106 2018 GMC Sierra Code - Keyless Entry Data Link

Quick Answer

The Body Control Module (BCM) communicates with the Remote Control Door Lock Receiver (RCDLR) through the keyless entry serial data circuits. Common causes include Faulty Remote Control Door Lock Receiver (RCDLR), Remote Control Door Lock Receiver harness is open or shorted, Remote Control Door Lock Receiver circuit poor electrical connection. 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: B3106 2018 GMC Sierra indicates Keyless Entry Data Link.
Common causes: Common causes include Faulty Remote Control Door Lock Receiver (RCDLR), Remote Control Door Lock Receiver harness is open or shorted, Remote Control Door Lock Receiver circuit poor electrical connection.
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.

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Code Popularity 176

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 11, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3106 2018 GMC Sierra Description

The Body Control Module (BCM) communicates with the Remote Control Door Lock Receiver (RCDLR) through the keyless entry serial data circuits. When any button on the keyless entry transmitter is pressed, the transmitter sends a signal to the RCDLR. The RCDLR sends a function request to the body control module, depending on which button is pressed on the transmitter. The BCM receives the message and performs the appropriate function. The Diagnostic Trouble Code (DTC) will be set when the transmitter that is sending a signal to the RCDLR is different from those transmitters stored in the BCM.

OBDII Code B3106 2018 GMC Sierra - Keyless Entry Data Link - AutoCodes.com — B3106 2018 GMC Sierra Code - Keyless Entry Data Link

What does this mean?

What are the Possible Causes of the DTC B3106 2018 GMC Sierra?

Faulty Remote Control Door Lock Receiver (RCDLR)
Remote Control Door Lock Receiver harness is open or shorted
Remote Control Door Lock Receiver circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3106 2018 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 B3106 2018 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 B3106 2018 GMC Sierra code?

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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 B3106 2018 GMC Sierra Code

1. What does the OBDII code B3106 mean on a 2018 GMC Sierra?

B3106 indicates an issue with the keyless entry data link, which is responsible for communication between the key fob and the vehicle's control modules.

2. What are the common symptoms of B3106 on a 2018 GMC Sierra?

Symptoms include the key fob not working to lock or unlock doors, failure to start the vehicle with push-button ignition, or intermittent keyless entry functionality.

3. What causes the B3106 code to appear?

The most common causes are a malfunctioning key fob, a damaged keyless entry antenna, wiring issues, or a fault in the body control module (BCM).

4. How can I diagnose the B3106 code on my 2018 GMC Sierra?

Start by checking the key fob battery, inspecting the keyless entry antenna and its wiring for damage, and using a scan tool to confirm communication with the BCM.

5. Can a dead key fob battery trigger the B3106 code?

Yes, a dead or low battery in the key fob can disrupt communication, potentially triggering the B3106 code.

6. How do I fix the B3106 code on my 2018 GMC Sierra?

Replace the key fob battery if it's dead, repair or replace damaged wiring or antennas, and reprogram or replace the BCM if necessary.

7. Is it safe to drive with the B3106 code active?

While it may not impact driving performance, you could lose keyless entry or push-to-start functionality, which may leave you stranded.

8. How much does it cost to repair the B3106 code on a 2018 GMC Sierra?

Costs vary depending on the issue, ranging from $5 for a key fob battery replacement to $500 or more for BCM repairs or replacement.

9. Can I clear the B3106 code without repairing the issue?

Clearing the code with a scan tool may work temporarily, but the code will likely reappear if the underlying issue isn't addressed.

10. Do I need a professional to fix the B3106 code on my GMC Sierra?

Simple issues like a dead key fob battery can be fixed by the owner, but complex problems involving the BCM or wiring may require professional assistance.