AutoCodes – GMC – B3247 GMC

B3247 GMC Code - Short To Ground Rear Compartment Lid Release Circuit

Quick Answer

The Body Control Module (BCM) controls the rear compartment lid latch. Common causes include Faulty Rear Compartment Lid Latch, Faulty Body Control Module (BCM). 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: B3247 GMC indicates Short To Ground Rear Compartment Lid Release Circuit.
Common causes: Common causes include Faulty Rear Compartment Lid Latch, Faulty Body Control Module (BCM).
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 443

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 05, 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 B3247 GMC Description

The Body Control Module (BCM) controls the rear compartment lid latch. When the BCM receives a release input from the rear compartment lid release switch or the remote control door lock receiver the BCM pulses the rear compartment lid latch and the rear compartment lid opens. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to ground in the rear compartment lid release output circuit.

OBDII Code B3247 GMC - Short To Ground Rear Compartment Lid Release Circuit - AutoCodes.com — B3247 GMC Code - Short To Ground Rear Compartment Lid Release Circuit

What does this mean?

What are the Possible Causes of the DTC B3247 GMC?

Faulty Rear Compartment Lid Latch
Faulty Body Control Module (BCM)

How to Fix the DTC B3247 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 B3247 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 B3247 GMC code?

Need more information on how to fix the B3247 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3247 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 B3247 GMC Code

1. What are common symptoms of OBDII code B3247 GMC (Short To Ground Rear Compartment Lid Release Circuit)?

Common symptoms include the rear compartment lid release not functioning, the trunk or rear hatch not opening electronically, or a warning light on the dashboard.

2. What can cause OBDII code B3247 GMC to trigger?

This code is usually triggered by a short to ground in the rear compartment lid release circuit, which may be caused by damaged wiring, a faulty release switch, or a malfunctioning control module.

3. How can I diagnose the cause of OBDII code B3247 GMC?

Diagnosing this code typically involves inspecting the wiring harness for damage, testing the release switch for proper operation, and checking the control module for any faults using a diagnostic scan tool.

4. Can I still open the rear compartment manually if OBDII code B3247 GMC triggers?

Yes, you should be able to manually open the rear compartment using a key or emergency release mechanism even if the electronic release is not functioning due to this code.

5. Is it safe to drive my vehicle with OBDII code B3247 GMC active?

It is generally safe to drive with this code, but you may face inconvenience if you need to access the rear compartment regularly. It's advisable to address the issue promptly to restore the electronic release function.

6. How can I repair OBDII code B3247 GMC?

Repairing this code involves locating and repairing the short to ground in the rear compartment lid release circuit, replacing any damaged wiring or components, and clearing the code with a diagnostic tool.

7. Are there any DIY tips for fixing OBDII code B3247 GMC?

While basic troubleshooting like checking for loose connections or visible damage can be done by DIY enthusiasts, resolving this code often requires advanced diagnostic equipment and electrical expertise best handled by a professional technician.

8. Can extreme weather conditions cause OBDII code B3247 GMC to trigger?

Extreme weather conditions, such as heavy rain or snow, can potentially exacerbate existing wiring issues and lead to a short to ground in the rear compartment lid release circuit, triggering this code.

9. Will OBDII code B3247 GMC affect other vehicle functions?

This code typically only affects the rear compartment lid release function and should not impact other critical vehicle systems. However, it's essential to address the issue to prevent any further electrical problems.

10. How much can I expect to pay to fix OBDII code B3247 GMC at a repair shop?

The cost of fixing this code can vary depending on the extent of the wiring damage and any components needing replacement. It's recommended to consult with a trusted mechanic for a specific diagnosis and repair estimate.