AutoCodes – GMC – B2615 2017 GMC Sierra

B2615 2017 GMC Sierra Code - Passenger Compartment Dimming 2 Circuit

Quick Answer

The Body Control Module (BCM) applies battery voltage to the dome/reading lamps through the dome/reading 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: B2615 2017 GMC Sierra indicates Passenger Compartment Dimming 2 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 248

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on May 29, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B2615 2017 GMC Sierra Description

The Body Control Module (BCM) applies battery voltage to the dome/reading lamps through the dome/reading lamp control circuit. When any door is opened, the jam switch contacts close and the BCM receives a door-ajar input. If the BCM receives a door lock or unlock input or a rear hatch open input, the BCM will activate the dome/reading lamp control circuit, providing battery voltage to dome/reading lamps. In the event that any of these courtesy lamps were to remain illuminated for more than 10 minutes with the ignition switch in the OFF position, the BCM will deactivate the courtesy lamp control circuit to prevent total battery discharge. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a short to ground or open in the dome lamps control circuit terminal.

OBDII Code B2615 2017 GMC Sierra - Passenger Compartment Dimming 2 Circuit - AutoCodes.com — B2615 2017 GMC Sierra Code - Passenger Compartment Dimming 2 Circuit

What does this mean?

What are the Possible Causes of the DTC B2615 2017 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 B2615 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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2615 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 B2615 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 B2615 2017 GMC Sierra Code

What does OBDII code B2615 mean for a 2017 GMC Sierra?

OBDII code B2615 indicates a problem with the Passenger Compartment Dimming 2 Circuit, which is responsible for controlling the interior lighting dimming functions.

What are the common symptoms of code B2615 in a GMC Sierra?

Common symptoms include malfunctioning interior lights, inability to adjust the brightness of the dashboard lights, or flickering lights.

What could cause the B2615 code to trigger?

Causes can include a faulty dimmer switch, damaged wiring or connectors in the dimming circuit, or a malfunctioning body control module (BCM).

How can I diagnose the issue related to code B2615?

Start by inspecting the dimmer switch and wiring for any visible damage. Use a multimeter to check for continuity in the circuit and verify the BCMâ€™s functionality.

Can I repair the B2615 code myself?

Yes, if you have experience with automotive electrical systems, you can check connections, replace the dimmer switch, or repair wiring issues. Otherwise, it's advisable to seek professional help.

What should I do if the B2615 code keeps returning after repairs?

If the code persists, recheck all related connections and components, and consider having the BCM tested or reprogrammed by a professional technician.

Is it safe to drive my GMC Sierra with the B2615 code?

While it may not affect engine performance, driving with this code can lead to visibility issues at night due to malfunctioning interior lights. It's best to address the issue.

Will clearing the B2615 code resolve my interior light issues?

Clearing the code may temporarily turn off warning lights, but if the underlying issue isn't fixed, the code will likely return, along with the dimming problems.

How much does it typically cost to fix the B2615 code?

Repair costs can vary widely depending on the issue's complexity, ranging from simple fixes like replacing a switch ($50-$150) to more extensive repairs involving the BCM ($200-$600).