AutoCodes – GMC – B2699 2016 GMC Sierra

B2699 2016 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 2016 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 300

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 2016 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 2016 GMC Sierra - Right Headlamp Control Circuit - AutoCodes.com — B2699 2016 GMC Sierra Code - Right Headlamp Control Circuit

What does this mean?

What are the Possible Causes of the DTC B2699 2016 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 2016 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 2016 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 2016 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 2016 GMC Sierra Code

1. What are common symptoms of OBDII code B2699 on a 2016 GMC Sierra related to the Right Headlamp Control Circuit?

- Common symptoms include the right headlamp not functioning properly, flickering, or not turning on at all.

2. What are possible causes of OBDII code B2699 on a 2016 GMC Sierra?

- Possible causes may include a faulty headlamp control module, damaged wiring or connectors, or a malfunctioning headlamp itself.

3. How can I diagnose the issue related to OBDII code B2699 on my 2016 GMC Sierra?

- To diagnose the issue, you can perform a visual inspection of the headlamp assembly, check the wiring and connectors for any damage, and use a multimeter to test the circuit continuity.

4. Can I repair OBDII code B2699 on my 2016 GMC Sierra by myself?

- Depending on your experience and tools available, you may be able to repair the issue yourself by replacing the faulty headlamp control module, repairing damaged wiring, or addressing any other identified issues.

5. Are there any specific repair tips for fixing OBDII code B2699 on a 2016 GMC Sierra?

- When repairing this code, it is important to follow the manufacturer's service manual for your specific vehicle model to ensure the correct diagnosis and repair procedures are followed.

6. Is it safe to continue driving my 2016 GMC Sierra with OBDII code B2699 related to the Right Headlamp Control Circuit?

- It is not recommended to drive the vehicle with malfunctioning headlamp controls, as it can affect visibility and safety, especially during nighttime driving.

7. What should I do if resetting the OBDII code B2699 on my 2016 GMC Sierra does not resolve the issue?

- If resetting the code does not fix the problem, it is advisable to perform a detailed inspection of the headlamp circuit and components or seek assistance from a professional mechanic.

8. Can extreme weather conditions contribute to triggering OBDII code B2699 on a 2016 GMC Sierra?

- Yes, extreme weather conditions such as heavy rain or snow can potentially cause electrical issues leading to the triggering of OBDII code B2699 related to the Right Headlamp Control Circuit.

9. Are there any recalls or technical service bulletins related to OBDII code B2699 on a 2016 GMC Sierra?

- It is recommended to check with your local GMC dealership or the manufacturer's website for any recalls or technical service bulletins related to this specific OBDII code for your vehicle.

10. How can I prevent OBDII code B2699 from occurring in the future on my 2016 GMC Sierra?

- To prevent OBDII code B2699, regular maintenance checks, keeping the headlamp assembly clean and free of debris, and addressing any electrical issues promptly can help prevent this code from occurring in the future.