AutoCodes – GMC – B2655 GMC

B2655 GMC Code - Courtesy Lamp Low Control Circuit High

Quick Answer

The Body Control Module (BCM) controls the courtesy lamps through the courtesy lamp low 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: B2655 GMC indicates Courtesy Lamp Low Control Circuit High.
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 988

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 Jan 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2655 GMC Description

The Body Control Module (BCM) controls the courtesy lamps through the courtesy lamp low control circuit. The BCM grounds the courtesy lamp low control circuit which completes the courtesy lamp low control circuit, and the lamps illuminate. The Diagnostic Trouble Code (DTC) sets when the BCM detects a short to battery in the courtesy lamp low control circuit.

OBDII Code B2655 GMC - Courtesy Lamp Low Control Circuit High - AutoCodes.com — B2655 GMC Code - Courtesy Lamp Low Control Circuit High

What does this mean?

What are the Possible Causes of the DTC B2655 GMC?

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 B2655 GMC?

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 B2655 GMC 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 B2655 GMC code?

Need more information on how to fix the B2655 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2655 GMC code diagnosed by a professional: Find a repair shop in your area

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 B2655 GMC Code

1. What are the common symptoms of OBDII code B2655 GMC (Courtesy Lamp Low Control Circuit High)?

The common symptoms include the courtesy lamp staying on constantly, flickering, or not working at all.

2. What are the possible causes of OBDII code B2655 GMC?

Possible causes of this code include a faulty courtesy lamp switch, damaged wiring in the control circuit, or a malfunctioning body control module.

3. How can I diagnose the issue related to OBDII code B2655 GMC?

You can diagnose the issue by inspecting the courtesy lamp switch, checking the wiring for any damage or loose connections, and using a diagnostic scanner to retrieve trouble codes from the body control module.

4. What are some simple repair tips for fixing OBDII code B2655 GMC?

Some repair tips include checking and replacing the courtesy lamp switch if necessary, repairing any damaged wiring in the control circuit, and resetting the body control module after making repairs.

5. Can I drive my vehicle with OBDII code B2655 GMC present?

It is generally safe to drive your vehicle with this code, but it is recommended to address the issue promptly to ensure the proper functionality of the courtesy lamp and prevent any potential electrical issues.

6. How much does it typically cost to repair OBDII code B2655 GMC?

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

7. Will resetting the OBDII code B2655 GMC fix the issue?

Resetting the code may temporarily turn off the warning light, but it will not fix the underlying problem causing the code to trigger. Proper diagnosis and repair are necessary to resolve the issue.

8. Can a DIY enthusiast fix OBDII code B2655 GMC at home?

Depending on your skill level and access to tools, it is possible to fix this code at home by following proper diagnostic procedures and repair steps, such as checking the courtesy lamp switch and inspecting the wiring.

9. Is OBDII code B2655 GMC a common issue in GMC vehicles?

While not as common as some other OBDII codes, B2655 related to the courtesy lamp low control circuit high can occur in GMC vehicles, especially in older models or vehicles with electrical system issues.

10. How long does it typically take to repair OBDII code B2655 GMC?

The repair time for this code can vary based on the cause of the issue and the complexity of the repair. In general, it may take anywhere from 1 to 3 hours to diagnose and fix the problem.