AutoCodes – GMC – B3102 GMC

B3102 GMC Code - Keyless Entry Data Link Circuit Low

Quick Answer

The Remote Control Door Lock Receiver (RCDLR) communicates with the Body Control Module (BCM) through the keyless entry serial data circuit. Common causes include Faulty Remote Control Door Lock Receiver (RCDLR), Remote Control Door Lock Receiver (RCDLR) harness is open or shorted, Remote Control Door Lock Receiver (RCDLR) 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: B3102 GMC indicates Keyless Entry Data Link Circuit Low.
Common causes: Common causes include Faulty Remote Control Door Lock Receiver (RCDLR), Remote Control Door Lock Receiver (RCDLR) harness is open or shorted, Remote Control Door Lock Receiver (RCDLR) 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 822

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B3102 GMC Description

The Remote Control Door Lock Receiver (RCDLR) communicates with the Body Control Module (BCM) through the keyless entry serial data circuit. When any button on the keyless entry transmitter is pressed, the transmitter sends a signal to the RCDLR. The RCDLR sends a lock, unlock, rear release, or panic alarm request to the BCM, depending on which button is pressed on the transmitter. The BCM receives the message and performs the appropriate function. The BCM also uses the keyless entry serial data circuit in order to communicate with the RCDLR when programming transmitters. The Diagnostic Trouble Code (DTC) sets when the keyless entry serial data circuit is shorted to ground.

OBDII Code B3102 GMC - Keyless Entry Data Link Circuit Low - AutoCodes.com — B3102 GMC Code - Keyless Entry Data Link Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3102 GMC?

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

How to Fix the DTC B3102 GMC?

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 B3102 GMC 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 B3102 GMC code?

Need more information on how to fix the B3102 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3102 GMC code diagnosed by a professional: Find a repair shop in your area

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 B3102 GMC Code

1. What are the common symptoms of OBDII code B3102 (GMC) Keyless Entry Data Link Circuit Low?

The common symptoms of code B3102 include issues with keyless entry system functionality, such as the key fob not working properly or the vehicle not responding to remote entry commands.

2. What are the possible causes of OBDII code B3102 (GMC) Keyless Entry Data Link Circuit Low?

Possible causes of code B3102 include wiring issues, a faulty keyless entry module, a malfunctioning receiver, or a problem with the key fob itself.

3. How can I diagnose OBDII code B3102 (GMC) Keyless Entry Data Link Circuit Low?

Diagnosing code B3102 involves checking the wiring connections, inspecting the keyless entry module and receiver for any visible damage, and testing the key fob to ensure it is functioning correctly.

4. Can I still drive my vehicle with OBDII code B3102 (GMC) Keyless Entry Data Link Circuit Low?

Yes, you can still drive your vehicle with this code, but you may experience difficulties with the keyless entry system. It is recommended to address the issue promptly to avoid inconvenience.

5. How can I repair OBDII code B3102 (GMC) Keyless Entry Data Link Circuit Low?

Repairing code B3102 may involve repairing or replacing damaged wiring, replacing the keyless entry module or receiver if necessary, or reprogramming the key fob to ensure proper functionality.

6. Are there any DIY tips for troubleshooting OBDII code B3102 (GMC) Keyless Entry Data Link Circuit Low?

You can start by checking the key fob battery, ensuring there are no obstructions blocking the signal between the key fob and the vehicle, and inspecting the wiring connections for any visible damage.

7. Can a malfunctioning keyless entry system cause code B3102 (GMC) Keyless Entry Data Link Circuit Low?

Yes, a malfunctioning keyless entry system can trigger code B3102 if there are issues with the communication between the keyless entry components, such as the module, receiver, or key fob.

8. How important is it to resolve OBDII code B3102 (GMC) Keyless Entry Data Link Circuit Low?

Resolving code B3102 is important to ensure the proper functioning of the keyless entry system, which is a convenient feature for accessing and securing your vehicle.

9. Is OBDII code B3102 (GMC) Keyless Entry Data Link Circuit Low a common issue in GMC vehicles?

Code B3102 can occur in GMC vehicles equipped with keyless entry systems, but its frequency may vary depending on the model and year of the vehicle.

10. Can extreme weather conditions affect OBDII code B3102 (GMC) Keyless Entry Data Link Circuit Low?

Extreme weather conditions, such as extreme cold or heat, can potentially affect the performance of the keyless entry system components and lead to issues like code B3102.