AutoCodes – GMC – B260D 2017 GMC Sierra

B260D 2017 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 2017 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 2017 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 2017 GMC Sierra - Left Daytime Running Lamps Control Circuit - AutoCodes.com — B260D 2017 GMC Sierra Code - Left Daytime Running Lamps Control Circuit

What does this mean?

What are the Possible Causes of the DTC B260D 2017 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 2017 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 2017 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 2017 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 B260D 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code B260D in a 2017 GMC Sierra related to the Left Daytime Running Lamps Control Circuit?

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

2. What are the potential causes of OBDII code B260D in a 2017 GMC Sierra?

Possible causes include a faulty daytime running lamp module, damaged wiring or connectors, a blown fuse, or a problem with the light sensor.

3. How can I diagnose the issue causing OBDII code B260D in my 2017 GMC Sierra?

You can start by visually inspecting the left daytime running lamp, checking the wiring and connectors for any damage, and testing the fuse related to the circuit.

4. Can I repair OBDII code B260D in my 2017 GMC Sierra on my own?

Depending on your level of automotive expertise, you may be able to repair this issue on your own by replacing a faulty component, fixing damaged wiring, or addressing a blown fuse.

5. Is it safe to continue driving my 2017 GMC Sierra with OBDII code B260D active?

It is not recommended to drive with this issue unresolved, as it may affect the visibility of your vehicle to other drivers and compromise safety.

6. How much does it typically cost to repair OBDII code B260D in a 2017 GMC Sierra at a professional auto repair shop?

Repair costs can vary based on the specific cause of the issue, but you can expect to pay for diagnostic time, parts, and labor, with an average cost ranging from $100 to $300.

7. What should I do if I reset OBDII code B260D in my 2017 GMC Sierra but it keeps coming back?

If the code keeps reappearing after being reset, it indicates a persistent issue that requires further investigation and repair to fully resolve the problem.

8. Are there any preventive measures to avoid OBDII code B260D in a 2017 GMC Sierra in the future?

Regularly inspecting the condition of your vehicle's lighting system, addressing any wiring issues promptly, and ensuring proper maintenance can help prevent the recurrence of this code.

9. Can extreme weather conditions affect the triggering of OBDII code B260D in a 2017 GMC Sierra?

Yes, extreme weather conditions such as heavy rain, snow, or extreme heat can potentially impact the functioning of the lighting system and lead to the activation of this diagnostic trouble code.

10. Will fixing OBDII code B260D affect the overall performance or fuel efficiency of my 2017 GMC Sierra?

Fixing this specific code is more about ensuring proper lighting functionality and safety rather than directly affecting performance or fuel efficiency, but it is still essential for the overall well-being of your vehicle.