AutoCodes – GMC – B2560 2018 GMC Sierra

B2560 2018 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 2018 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 281

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 2018 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 2018 GMC Sierra - Cargo Lamps Control Circuit - AutoCodes.com — B2560 2018 GMC Sierra Code - Cargo Lamps Control Circuit

What does this mean?

What are the Possible Causes of the DTC B2560 2018 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 2018 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 2018 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.

Need more information about the B2560 2018 GMC Sierra code?

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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 B2560 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code B2560 in a 2018 GMC Sierra related to the Cargo Lamps Control Circuit?

The common symptoms include non-functioning cargo lamps, flickering or dimming of the cargo lamps, or the cargo lamps staying on even when not in use.

2. What are the possible causes of OBDII code B2560 in a 2018 GMC Sierra Cargo Lamps Control Circuit?

Possible causes include a faulty cargo lamp control module, damaged wiring or connectors in the cargo lamp circuit, a blown fuse, or a malfunctioning cargo lamp switch.

3. How can I diagnose the OBDII code B2560 in a 2018 GMC Sierra Cargo Lamps Control Circuit?

You can diagnose the issue by visually inspecting the cargo lamp circuit for any visible damage, testing the cargo lamp switch for proper functionality, checking the cargo lamp fuse, and using a diagnostic scanner to retrieve trouble codes.

4. What are some repair tips for fixing OBDII code B2560 in a 2018 GMC Sierra Cargo Lamps Control Circuit?

Repair tips include replacing the cargo lamp control module if faulty, repairing or replacing damaged wiring or connectors, ensuring the cargo lamp switch is functioning correctly, and replacing any blown fuses in the circuit.

5. Can I drive my 2018 GMC Sierra with OBDII code B2560 related to the Cargo Lamps Control Circuit?

It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure the proper functioning of the cargo lamps.

6. How much does it typically cost to repair OBDII code B2560 in a 2018 GMC Sierra Cargo Lamps Control Circuit?

The cost of repair can vary depending on the specific issue causing the code. Costs may include parts such as a new cargo lamp control module, wiring repairs, or fuse replacements, as well as labor charges if professional help is required.

7. Can OBDII code B2560 in a 2018 GMC Sierra Cargo Lamps Control Circuit be reset without repairs?

While you can clear the trouble code with a diagnostic scanner, it is not recommended to reset the code without addressing the underlying issue, as the problem may persist and cause further malfunctions.

8. Are there any recalls or technical service bulletins related to OBDII code B2560 in a 2018 GMC Sierra Cargo Lamps Control Circuit?

It is advisable to check with a GMC dealership or online resources for any recalls or technical service bulletins specific to this code in the 2018 GMC Sierra model to stay informed about potential solutions or manufacturer recommendations.

9. Is it possible to prevent OBDII code B2560 in a 2018 GMC Sierra Cargo Lamps Control Circuit from recurring?

Regular maintenance checks, timely repairs of any lighting issues, and using quality replacement parts can help prevent the recurrence of this trouble code in the future.

10. Can I fix OBDII code B2560 in a 2018 GMC Sierra Cargo Lamps Control Circuit myself, or should I seek professional help?

Depending on your skill level and comfort working on automotive electrical systems, you may attempt the repairs yourself by following the vehicle's service manual. However, if you are unsure or not experienced in such repairs, it is recommended to seek professional help to ensure the issue is properly diagnosed and fixed.