AutoCodes – GMC – B2699 2015 GMC Sierra

B2699 2015 GMC Sierra Code - Right Headlamp Control Circuit

Quick Answer

When the Body Control Module (BCM) senses a request for low-beam headlamp illumination, the BCM sends a ground signal to the low-beam headlamp relay through the headlamp low-beam relay control circuit. Common causes include Faulty Right Low Beam Headlamp, Right Low Beam Headlamp harness is open or shorted, Right Low Beam Headlamp 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: B2699 2015 GMC Sierra indicates Right Headlamp Control Circuit.
Common causes: Common causes include Faulty Right Low Beam Headlamp, Right Low Beam Headlamp harness is open or shorted, Right Low Beam Headlamp 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 305

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 B2699 2015 GMC Sierra Description

When the Body Control Module (BCM) senses a request for low-beam headlamp illumination, the BCM sends a ground signal to the low-beam headlamp relay through the headlamp low-beam relay control circuit. The headlamp low beam relay will apply voltage to illuminate the headlamps. The Diagnostic Trouble Code (DTC) sets when the BCM receives a command to illuminate the low beam headlamps and the headlamp low beam relay control circuit is open or shorted to voltage or when the BCM does not receive a command to illuminate the low beam headlamps and the headlamp low beam relay control circuit is shorted to ground.

OBDII Code B2699 2015 GMC Sierra - Right Headlamp Control Circuit - AutoCodes.com — B2699 2015 GMC Sierra Code - Right Headlamp Control Circuit

What does this mean?

What are the Possible Causes of the DTC B2699 2015 GMC Sierra?

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

How to Fix the DTC B2699 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 does this mean?

Code Tech Notes

B2699:01 Right Headlamp Control Circuit Short to Battery
B2699:02 Right Headlamp Control Circuit Short to Ground
B2699:04 Right Headlamp Control Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2699 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.

Need more information about the B2699 2015 GMC Sierra 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 B2699 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code B2699 in a 2015 GMC Sierra related to the Right Headlamp Control Circuit?

The common symptoms include the right headlamp not functioning properly or not turning on at all.

2. What are the possible causes of OBDII code B2699 in a 2015 GMC Sierra?

Possible causes include a faulty headlamp control module, wiring issues, a defective headlamp assembly, or a problem with the vehicle's electrical system.

3. How can I diagnose OBDII code B2699 in my 2015 GMC Sierra?

Diagnosis typically involves checking the wiring and connections related to the right headlamp, testing the headlamp control module, and inspecting the headlamp assembly for any visible damage.

4. Can I repair OBDII code B2699 in my 2015 GMC Sierra myself?

Depending on your skill level and access to tools, you may be able to repair the issue yourself by replacing the faulty headlamp control module, fixing any wiring problems, or replacing the headlamp assembly.

5. Is it safe to continue driving my 2015 GMC Sierra with OBDII code B2699 present?

It is not recommended to drive with a malfunctioning right headlamp, as it can affect your visibility on the road, especially at night. It's best to address the issue promptly.

6. How much does it typically cost to repair OBDII code B2699 in a 2015 GMC Sierra?

The cost of repairs can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $100 to $500 or more.

7. Are there any preventative measures I can take to avoid OBDII code B2699 in my 2015 GMC Sierra?

Regularly inspecting the headlamp system for any signs of damage or wear, ensuring proper electrical connections, and addressing any issues promptly can help prevent this code from occurring.

8. Can a bad headlamp bulb trigger OBDII code B2699 in a 2015 GMC Sierra?

While a bad headlamp bulb itself may not trigger this specific code, it can contribute to headlamp control circuit issues that may lead to the code being set.

9. Will resetting the OBDII codes make OBDII code B2699 disappear in my 2015 GMC Sierra?

Resetting the codes may temporarily clear the code, but if the underlying issue causing the code is not addressed, it is likely to reappear after driving the vehicle for a while.

10. How urgent is it to address OBDII code B2699 in a 2015 GMC Sierra?

It is recommended to address this code as soon as possible to ensure proper functioning of the right headlamp and maintain safety while driving, particularly in low-light conditions.