AutoCodes – GMC – B2560 2015 GMC Sierra

B2560 2015 GMC Sierra Code - Cargo Lamps Control Circuit

Quick Answer

The cargo lamp relay is always supplied with battery voltage. Common causes include Faulty Cargo Lamp Relay, Cargo Lamp Relay harness is open or shorted, Cargo Lamp Relay 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: B2560 2015 GMC Sierra indicates Cargo Lamps Control Circuit.
Common causes: Common causes include Faulty Cargo Lamp Relay, Cargo Lamp Relay harness is open or shorted, Cargo Lamp Relay 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 220

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 May 25, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2560 2015 GMC Sierra Description

The cargo lamp relay is always supplied with battery voltage. The cargo lamp switch signal circuit is grounded momentarily by pressing the cargo lamp switch. The Body Control Module (BCM) energizes the cargo lamp relay by applying ground to the cargo lamp relay control circuit. When the cargo lamp relay is energized, the relay switch contacts close, and battery voltage is applied through the fuse to the cargo lamp control circuit which illuminates the cargo lamps. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a problem in the cargo lamp switch ground circuit.

OBDII Code B2560 2015 GMC Sierra - Cargo Lamps Control Circuit - AutoCodes.com — B2560 2015 GMC Sierra Code - Cargo Lamps Control Circuit

What does this mean?

What are the Possible Causes of the DTC B2560 2015 GMC Sierra?

Faulty Cargo Lamp Relay
Cargo Lamp Relay harness is open or shorted
Cargo Lamp Relay circuit poor electrical connection
Faulty Cargo Lamp Switch
Faulty Cargo Lamp
Faulty Body Control Module (BCM)

How to Fix the DTC B2560 2015 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 B2560 2015 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.

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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 B2560 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code B2560 in a 2015 GMC Sierra related to the Cargo Lamps Control Circuit?

- The common symptoms include non-functional cargo lamps or erratic behavior in the operation of the cargo lamps.

2. What are the possible causes of OBDII code B2560 in a 2015 GMC Sierra Cargo Lamps Control Circuit?

- Possible causes can include a faulty cargo lamp switch, damaged wiring or connectors in the circuit, or a malfunctioning Body Control Module (BCM).

3. How can I diagnose the OBDII code B2560 in my 2015 GMC Sierra related to the Cargo Lamps Control Circuit?

- Diagnostic steps may involve checking the cargo lamp switch for proper operation, inspecting the wiring and connectors for any damage, and using a scan tool to communicate with the BCM for further diagnosis.

4. Are there any simple checks or repairs I can perform myself for OBDII code B2560 in my 2015 GMC Sierra Cargo Lamps Control Circuit?

- You can start by checking the cargo lamp fuse, ensuring the cargo lamp switch is working correctly, and inspecting the wiring for any visible damage or loose connections.

5. Can a malfunctioning cargo lamp impact other vehicle systems when OBDII code B2560 is triggered in a 2015 GMC Sierra?

- While the cargo lamp issue itself may not directly affect other vehicle systems, it is still important to address the problem as it may be a sign of an underlying electrical issue that could potentially impact other systems.

6. Is it safe to drive my 2015 GMC Sierra with OBDII code B2560 related to the Cargo Lamps Control Circuit illuminated?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure proper functionality of the cargo lamps and prevent any potential electrical issues.

7. How much does it typically cost to repair OBDII code B2560 in a 2015 GMC Sierra Cargo Lamps Control Circuit?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the cargo lamp switch, repairing wiring, or potentially reprogramming the BCM, which could range from a few hundred to over a thousand dollars.

8. Can resetting the OBDII system clear the B2560 code related to the Cargo Lamps Control Circuit in a 2015 GMC Sierra?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the code is not addressed, it is likely to reappear once the problem is detected again by the vehicle's diagnostic system.

9. Are there any recalls or technical service bulletins related to OBDII code B2560 in a 2015 GMC Sierra Cargo Lamps Control Circuit?

- It is recommended to check with a GMC dealership or online resources for any relevant recalls or technical service bulletins related to this specific OBDII code in the 2015 GMC Sierra to see if there are any manufacturer-issued remedies or instructions.

10. How can a professional mechanic help in diagnosing and repairing OBDII code B2560 in a 2015 GMC Sierra Cargo Lamps Control Circuit?

- A professional mechanic will have the expertise and tools needed to accurately diagnose the issue, perform advanced troubleshooting, and make the necessary repairs to resolve the OBDII code B2560 related to the Cargo Lamps Control Circuit in a 2015 GMC Sierra.