AutoCodes – GMC – B255D 2018 GMC Sierra

B255D 2018 GMC Sierra Code - Passenger Compartment Lamp Control Circuit

Quick Answer

The Body Control Module (BCM) supplies battery voltage to accent lighting lamps via the accent lamp control circuit. Common causes include Faulty Courtesy Lamp, Courtesy Lamp harness is open or shorted, Courtesy Lamp 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: B255D 2018 GMC Sierra indicates Passenger Compartment Lamp Control Circuit.
Common causes: Common causes include Faulty Courtesy Lamp, Courtesy Lamp harness is open or shorted, Courtesy Lamp 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 139

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 25, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B255D 2018 GMC Sierra Description

The Body Control Module (BCM) supplies battery voltage to accent lighting lamps via the accent lamp control circuit. When a door is opened the BCM applies battery voltage to the accent lamp control circuit illuminating all of the accent lighting. The accent lighting will remain illuminated until all doors are closed, and the ignition is OFF. The accent lighting remains illuminated with the ignition ON. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a problem in the courtesy lamps control circuit terminal.

OBDII Code B255D 2018 GMC Sierra - Passenger Compartment Lamp Control Circuit - AutoCodes.com — B255D 2018 GMC Sierra Code - Passenger Compartment Lamp Control Circuit

What does this mean?

What are the Possible Causes of the DTC B255D 2018 GMC Sierra?

Faulty Courtesy Lamp
Courtesy Lamp harness is open or shorted
Courtesy Lamp circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B255D 2018 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

B255D:01 Passenger Compartment Lamp Control Circuit Short to Battery
B255D:02 Passenger Compartment Lamp Control Circuit Short to Ground
B255D:04 Passenger Compartment Lamp Control Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B255D 2018 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 B255D 2018 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 B255D 2018 GMC Sierra Code

1. What are common symptoms of OBDII code B255D in a 2018 GMC Sierra related to the Passenger Compartment Lamp Control Circuit?

The common symptoms include the passenger compartment lamp not turning on or remaining on continuously.

2. What are possible causes of OBDII code B255D in a 2018 GMC Sierra?

Possible causes include a faulty passenger compartment lamp switch, wiring issues, a blown fuse, or a malfunctioning control module.

3. How can I diagnose the cause of OBDII code B255D in my 2018 GMC Sierra?

You can start by checking the passenger compartment lamp switch, inspecting the wiring for any damage, testing the fuse, and using a diagnostic scanner to check the control module.

4. Can I fix OBDII code B255D in my 2018 GMC Sierra by replacing the passenger compartment lamp myself?

Yes, you can replace the passenger compartment lamp yourself if it is determined to be the cause of the code. Make sure to follow the manufacturer's instructions and safety precautions.

5. Is it safe to continue driving my 2018 GMC Sierra with OBDII code B255D related to the Passenger Compartment Lamp Control Circuit?

It is generally safe to drive the vehicle with this code, but you may experience inconvenience due to the malfunctioning passenger compartment lamp.

6. How much does it typically cost to repair OBDII code B255D in a 2018 GMC Sierra at a dealership or repair shop?

The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

7. Can a loose connection be the reason behind OBDII code B255D in a 2018 GMC Sierra?

Yes, a loose or poor connection in the wiring related to the passenger compartment lamp control circuit can trigger this diagnostic trouble code.

8. Will disconnecting the battery reset OBDII code B255D in my 2018 GMC Sierra?

Disconnecting the battery may temporarily reset the code, but it is recommended to diagnose and repair the underlying issue to prevent the code from reoccurring.

9. Are there any recalls or technical service bulletins related to OBDII code B255D in a 2018 GMC Sierra?

You can check with GMC customer service or visit their official website to see if there are any recalls or technical service bulletins related to this specific OBDII code.

10. Does OBDII code B255D in a 2018 GMC Sierra affect the vehicle's overall performance or safety?

This code typically does not affect the vehicle's performance or safety directly, but it is essential to address the underlying issue to ensure all systems are functioning correctly.