AutoCodes – GMC – B2580 GMC

B2580 GMC Code - Headlamp High Beam Control Circuit

Quick Answer

The high beam and flash-to-pass functions are contained within the turn signal/multifunction switch. Common causes include Faulty Headlamp High Beam Relay, Headlamp High Beam Relay harness is open or shorted, Headlamp High Beam 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: B2580 GMC indicates Headlamp High Beam Control Circuit.
Common causes: Common causes include Faulty Headlamp High Beam Relay, Headlamp High Beam Relay harness is open or shorted, Headlamp High Beam 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 2,496

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 26, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B2580 GMC Description

The high beam and flash-to-pass functions are contained within the turn signal/multifunction switch. The Body Control Module (BCM) provides the turn signal/multifunction switch with two signal circuits, the high beam signal circuit, and the flash-to-pass signal circuit. When the low beam headlamps are ON and the turn signal/multifunction switch is placed in the high beam position, ground is applied to the BCM through the high beam signal circuit. The BCM responds to the high beam request by applying ground to the high beam relay control circuit which energizes the high beam relay. With the high beam relay energized, the switch contacts close allowing battery voltage to flow through the high beam fuse to the high beam control circuits illuminating the high beam headlamps.

OBDII Code B2580 GMC - Headlamp High Beam Control Circuit - AutoCodes.com — B2580 GMC Code - Headlamp High Beam Control Circuit

What does this mean?

What are the Possible Causes of the DTC B2580 GMC?

Faulty Headlamp High Beam Relay
Headlamp High Beam Relay harness is open or shorted
Headlamp High Beam Relay circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2580 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 does this mean?

Code Tech Notes

B2580:01 High Beam Control Circuit Short to Battery
B2580:02 High Beam Control Circuit Short to Ground
B2580:04 High Beam Control Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2580 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 B2580 GMC code?

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Need Help with the Code?

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Information for Specific GMC Models

B2580 2014 GMC Sierra — Headlamp High Beam Control Circuit
B2580 2015 GMC Sierra — Headlamp High Beam Control Circuit
B2580 2016 GMC Sierra — Headlamp High Beam Control Circuit
B2580 2017 GMC Sierra — Headlamp High Beam Control Circuit
B2580 2018 GMC Sierra — Headlamp High Beam Control Circuit

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 B2580 GMC Code

1. What are the common symptoms of OBDII code B2580 in a GMC related to the headlamp high beam control circuit?

- Common symptoms include high beams not functioning, high beams stuck in the on position, or high beams flickering.

2. What are the typical causes of OBDII code B2580 in a GMC triggering a fault in the headlamp high beam control circuit?

- Possible causes include a faulty high beam control switch, a defective high beam relay, wiring issues, or a malfunctioning body control module.

3. How can I diagnose the source of OBDII code B2580 in a GMC affecting the headlamp high beam control circuit?

- You can start by checking the high beam switch, inspecting the high beam relay, testing the wiring for continuity, and scanning the body control module for error codes.

4. Is it safe to drive with OBDII code B2580 in a GMC related to the headlamp high beam control circuit active?

- It is not recommended to drive with this code active, as it can affect visibility and compromise the safety of driving at night or in low-light conditions.

5. Can I reset OBDII code B2580 in a GMC associated with the headlamp high beam control circuit by disconnecting the battery?

- Disconnecting the battery may clear the code temporarily, but it is advisable to diagnose and fix the underlying issue causing the fault to prevent it from recurring.

6. Are there any DIY repair tips for resolving OBDII code B2580 in a GMC linked to the headlamp high beam control circuit?

- DIY repair tips include checking and replacing the high beam switch, inspecting and replacing the high beam relay, and ensuring all wiring connections are secure and free of damage.

7. How much does it typically cost to repair OBDII code B2580 in a GMC affecting the headlamp high beam control circuit?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Can a mechanic easily fix OBDII code B2580 in a GMC related to the headlamp high beam control circuit?

- A qualified mechanic should be able to diagnose and repair the issue efficiently by following proper diagnostic procedures and using the necessary tools and equipment.

9. Will OBDII code B2580 in a GMC impacting the headlamp high beam control circuit cause the high beams to fail completely?

- In some cases, the high beams may fail completely when this code is triggered, requiring timely diagnosis and repair to restore proper functionality.

10. How long does it typically take to repair OBDII code B2580 in a GMC associated with the headlamp high beam control circuit?

- The repair time can vary based on the exact cause of the issue and the mechanic's expertise, but it may take anywhere from 1 to 3 hours to diagnose and fix the problem.