AutoCodes – GMC – B260D 2016 GMC Sierra

B260D 2016 GMC Sierra Code - Left Daytime Running Lamps Control Circuit

Quick Answer

The ambient light sensor is used to monitor outside lighting conditions. Common causes include Faulty Left Daytime Running Lamps, Left Daytime Running Lamps harness is open or shorted, Left Daytime Running Lamps 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: B260D 2016 GMC Sierra indicates Left Daytime Running Lamps Control Circuit.
Common causes: Common causes include Faulty Left Daytime Running Lamps, Left Daytime Running Lamps harness is open or shorted, Left Daytime Running Lamps 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 153

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 29, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B260D 2016 GMC Sierra Description

The ambient light sensor is used to monitor outside lighting conditions. The ambient light sensor provides a voltage signal that will vary between 0.2 and 4.9 V depending on outside lighting conditions. The Body Control Module (BCM) provides a 5 V reference signal to the ambient light sensor and the Heating, Ventilation, and Air Conditioning (HVAC) Module provides a low reference ground. The BCM monitors the ambient light sensor signal circuit to determine if outside lighting conditions are correct for either daytime running lamps or automatic lamp control when the headlamp switch is in the AUTO position. In daylight conditions, the BCM will command the designated daytime running lamps ON. During low light conditions, the BCM will command the low beam headlamps ON. Any function or condition that turns on the headlamps will cancel daytime running lamps operation. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a problem in the left park/daytime running lamp control circuit.

OBDII Code B260D 2016 GMC Sierra - Left Daytime Running Lamps Control Circuit - AutoCodes.com — B260D 2016 GMC Sierra Code - Left Daytime Running Lamps Control Circuit

What does this mean?

What are the Possible Causes of the DTC B260D 2016 GMC Sierra?

Faulty Left Daytime Running Lamps
Left Daytime Running Lamps harness is open or shorted
Left Daytime Running Lamps circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B260D 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B260D 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 B260D 2016 GMC Sierra code?

Need more information on how to fix the B260D 2016 GMC Sierra code? Get Access to Factory Service Manuals

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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 B260D 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code B260D in a 2016 GMC Sierra related to the Left Daytime Running Lamps Control Circuit?

The common symptoms include the left daytime running lamp not functioning, flickering, or remaining constantly on.

2. What are the possible causes of OBDII code B260D in a 2016 GMC Sierra?

The code B260D can be triggered by issues such as a faulty daytime running lamp module, damaged wiring harness, or a malfunctioning light sensor.

3. How can I diagnose the cause of OBDII code B260D in my 2016 GMC Sierra?

To diagnose the issue, you can start by visually inspecting the wiring harness and connections related to the left daytime running lamp. Using a multimeter to check for continuity and voltage can also help pinpoint the problem.

4. Is it safe to continue driving my 2016 GMC Sierra with OBDII code B260D triggered?

It is recommended not to drive the vehicle with a malfunctioning daytime running lamp, as it may reduce visibility to other drivers, especially during low-light conditions.

5. Can I repair OBDII code B260D in my 2016 GMC Sierra myself?

If you have experience with automotive electrical systems and the necessary tools, you may be able to repair the issue yourself. However, if you are unsure, it's best to consult a qualified mechanic for proper diagnosis and repair.

6. Are there any temporary fixes I can try for OBDII code B260D in my 2016 GMC Sierra?

You can try checking and securing any loose connections related to the left daytime running lamp to see if that resolves the issue temporarily. However, a permanent fix may require professional intervention.

7. How much does it typically cost to repair OBDII code B260D in a 2016 GMC Sierra?

The cost of repairing OBDII code B260D can vary depending on the underlying cause of the issue. It is advisable to obtain quotes from different mechanics or service centers for an accurate estimate.

8. Can extreme weather conditions affect the triggering of OBDII code B260D in a 2016 GMC Sierra?

Extreme weather conditions, such as heavy rain or snow, can potentially exacerbate existing issues with the left daytime running lamp circuit and lead to the triggering of code B260D.

9. Will resetting the OBDII system clear the B260D code in my 2016 GMC Sierra?

While resetting the OBDII system may temporarily clear the code, it is important to address the root cause of the issue to prevent the code from reoccurring.

10. How important is it to address OBDII code B260D in a 2016 GMC Sierra promptly?

It is crucial to address code B260D promptly to ensure the proper functioning of the left daytime running lamp, which is essential for visibility and safety while driving, especially in low-light conditions.