AutoCodes – GMC – B260D 2015 GMC Sierra

B260D 2015 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 2015 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 183

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 2015 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 2015 GMC Sierra - Left Daytime Running Lamps Control Circuit - AutoCodes.com — B260D 2015 GMC Sierra Code - Left Daytime Running Lamps Control Circuit

What does this mean?

What are the Possible Causes of the DTC B260D 2015 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 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B260D 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 B260D 2015 GMC Sierra code?

Need more information on how to fix the B260D 2015 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 2015 GMC Sierra Code

1. What does OBDII code B260D for a 2015 GMC Sierra indicate?

Code B260D refers to a fault in the Left Daytime Running Lamps Control Circuit of the vehicle.

2. What are the common symptoms of OBDII code B260D in a 2015 GMC Sierra?

Common symptoms include the left daytime running lamp not functioning properly or not turning on at all.

3. What are the possible causes of OBDII code B260D in a 2015 GMC Sierra?

Possible causes may include a faulty daytime running lamp bulb, a wiring issue in the left lamp circuit, or a malfunctioning control module.

4. How can I diagnose the issue related to OBDII code B260D in my 2015 GMC Sierra?

You can start by visually inspecting the left daytime running lamp, checking the wiring for any damage, and using a multimeter to test the circuit continuity.

5. Can I repair OBDII code B260D in my 2015 GMC Sierra myself?

If you have automotive repair knowledge and the necessary tools, you may be able to replace the faulty bulb, repair the wiring, or replace the control module yourself.

6. Is it safe to continue driving my 2015 GMC Sierra with OBDII code B260D?

It is generally not recommended to drive with this code unresolved, as it can affect the visibility of your vehicle on the road, especially during daytime.

7. Will resetting the OBDII code B260D in my 2015 GMC Sierra make the issue go away?

Resetting the code may temporarily turn off the warning light, but if the underlying issue is not fixed, the code is likely to reappear.

8. How much does it typically cost to repair OBDII code B260D in a 2015 GMC Sierra?

The cost of repair can vary depending on the exact cause of the issue, but it may involve expenses for parts and labor if professional help is needed.

9. Are there any recalls or technical service bulletins related to OBDII code B260D in a 2015 GMC Sierra?

It's recommended to check with a GMC dealership or visit the National Highway Traffic Safety Administration website to see if there are any relevant recalls or bulletins for this specific code.

10. Can extreme weather conditions affect the occurrence of OBDII code B260D in a 2015 GMC Sierra?

Extreme weather conditions, especially moisture or corrosion, can potentially contribute to issues with the left daytime running lamps control circuit, triggering the B260D code.