AutoCodes – GMC – B3124 GMC

B3124 GMC Code - Keyless Entry Antenna 6

Quick Answer

The rear compartment antenna is located on the rear compartment floor near the seat back, centered, and is used to establish low frequency communications with the keyless entry transmitter. Common causes include Faulty Keyless Entry Antenna Rear Compartment, Keyless Entry Antenna Rear Compartment harness is open or shorted, Keyless Entry Antenna Rear Compartment 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: B3124 GMC indicates Keyless Entry Antenna 6.
Common causes: Common causes include Faulty Keyless Entry Antenna Rear Compartment, Keyless Entry Antenna Rear Compartment harness is open or shorted, Keyless Entry Antenna Rear Compartment 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 1,411

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
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Code B3124 GMC Description

The rear compartment antenna is located on the rear compartment floor near the seat back, centered, and is used to establish low frequency communications with the keyless entry transmitter. When the driver attempts to change the ignition status of the vehicle, the Keyless Entry Control Module communicates with the rear compartment antenna. The Diagnostic Trouble Code (DTC) sets when the keyless entry control module detects a short to ground on the rear compartment keyless entry antenna signal circuit.

OBDII Code B3124 GMC - Keyless Entry Antenna 6 - AutoCodes.com — B3124 GMC Code - Keyless Entry Antenna 6

What does this mean?

What are the Possible Causes of the DTC B3124 GMC?

Faulty Keyless Entry Antenna Rear Compartment
Keyless Entry Antenna Rear Compartment harness is open or shorted
Keyless Entry Antenna Rear Compartment circuit poor electrical connection
Faulty Keyless Entry Control Module

How to Fix the DTC B3124 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 B3124 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.

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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 B3124 GMC Code

1. What does OBDII code B3124 GMC indicate?

- OBDII code B3124 for GMC specifically refers to a fault with Keyless Entry Antenna 6.

2. What are common symptoms of OBDII code B3124 GMC?

- Common symptoms include issues with the keyless entry system, such as the remote not working or difficulty locking/unlocking the vehicle.

3. What are possible causes of OBDII code B3124 GMC?

- Possible causes include a faulty keyless entry antenna, damaged wiring, poor antenna connection, or a malfunctioning control module.

4. How can I diagnose the cause of OBDII code B3124 GMC?

- Diagnose the code by inspecting the keyless entry antenna for physical damage, checking the wiring for continuity, ensuring proper antenna connection, and using a diagnostic tool to scan the system.

5. Can OBDII code B3124 GMC be fixed by resetting the system?

- Resetting the system may temporarily clear the code, but if the underlying issue persists (such as a faulty antenna), the code will likely reappear.

6. Is it safe to continue driving with OBDII code B3124 GMC present?

- It is generally safe to drive with this code, but it is recommended to address the underlying issue to ensure proper functioning of the keyless entry system.

7. How can I repair OBDII code B3124 GMC?

- Repair options include replacing the keyless entry antenna, repairing damaged wiring, securing loose connections, or reprogramming the control module if necessary.

8. Can a DIY enthusiast fix OBDII code B3124 GMC at home?

- Depending on the root cause, DIY enthusiasts may be able to address the issue by following repair guides, using basic tools, and having some knowledge of automotive electrical systems.

9. Are there any preventative measures to avoid OBDII code B3124 GMC?

- To prevent this code, regularly inspect the keyless entry system components for damage, ensure proper maintenance, and address any issues promptly.

10. How much does it typically cost to repair OBDII code B3124 GMC at a professional mechanic or dealership?

- Repair costs can vary depending on the exact cause, but expect to pay for parts (such as a new antenna) and labor fees which can range from $100 to $300 or more.