AutoCodes – GMC – B3248 GMC

B3248 GMC Code - Short To Battery Voltage Rear Compartment Lid Release Output Circuit

Quick Answer

The Body Control Module (BCM) controls the rear compartment lid latch. Common causes include Faulty Rear Compartment Lid Release 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: B3248 GMC indicates Short To Battery Voltage Rear Compartment Lid Release Output Circuit.
Common causes: Common causes include Faulty Rear Compartment Lid Release 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.

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Code Popularity 798

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
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Code B3248 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 battery in the rear compartment lid release output circuit.

OBDII Code B3248 GMC - Short To Battery Voltage Rear Compartment Lid Release Output Circuit - AutoCodes.com — B3248 GMC Code - Short To Battery Voltage Rear Compartment Lid Release Output Circuit

What does this mean?

What are the Possible Causes of the DTC B3248 GMC?

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

How to Fix the DTC B3248 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 B3248 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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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 B3248 GMC Code

1. What does the OBDII code B3248 mean on a GMC?

The code B3248 indicates a "Short to Battery Voltage" issue in the rear compartment lid release output circuit, often related to the trunk release system.

2. What are common symptoms of the B3248 code?

Symptoms include an inoperative rear compartment lid release, trunk release not responding to commands, or blown fuses related to the circuit.

3. What causes the B3248 code to appear?

The most common causes include damaged wiring, a short circuit to battery voltage in the trunk release circuit, or a faulty trunk release actuator.

4. Can a blown fuse cause the B3248 code?

Yes, a blown fuse in the rear compartment lid release circuit may trigger this code, especially if caused by an underlying short circuit.

5. How can you diagnose the B3248 code?

Diagnosis involves inspecting the trunk release wiring and connectors for damage, testing the trunk release actuator, and checking for continuity or shorts in the circuit.

6. Can a faulty rear compartment lid release switch cause the B3248 code?

Yes, a defective lid release switch can cause this code if it sends incorrect signals or creates a short to battery voltage.

7. How do you fix the B3248 code on a GMC vehicle?

Repairs typically include fixing or replacing damaged wiring, repairing shorts to battery voltage, replacing a blown fuse, or replacing a faulty trunk release actuator.

8. Is the B3248 code related to other electrical issues?

Yes, it can be linked to broader electrical problems, especially if there are multiple shorts or damaged wiring in the vehicle's trunk release system.

9. Can driving with the B3248 code cause further damage?

While it may not affect drivability, ignoring the code could lead to further electrical issues or an inoperative rear compartment lid release.

10. Do I need special tools to troubleshoot the B3248 code?

Basic tools like a multimeter and wiring diagrams are needed to test for continuity, voltage, and shorts in the circuit. Advanced diagnostic equipment can also be helpful.