AutoCodes – GMC – B1815 2015 GMC Sierra

B1815 2015 GMC Sierra Code - Driver Seat Recline Forward Switch Circuit

Quick Answer

The Seat Memory Control Module supplies a reference voltage to each signal circuit of the Driver Seat Adjuster Switch. Common causes include Faulty Driver Seat Adjuster Switch, Driver Seat Adjuster Switch harness is open or shorted, Driver Seat Adjuster Switch 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: B1815 2015 GMC Sierra indicates Driver Seat Recline Forward Switch Circuit.
Common causes: Common causes include Faulty Driver Seat Adjuster Switch, Driver Seat Adjuster Switch harness is open or shorted, Driver Seat Adjuster Switch 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 279

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 Apr 24, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1815 2015 GMC Sierra Description

The Seat Memory Control Module supplies a reference voltage to each signal circuit of the Driver Seat Adjuster Switch. When the power seat or lumbar switches are pressed, the appropriate signal circuit from the Seat Memory Control Module is pulled low through the switch contacts indicating the power seat command. The Seat Memory Control Module then commands the driver seat or lumbar to move in response to the switch signals. The Diagnostic Trouble Code (DTC) will be set when there is a short to ground on a switch signal circuit.

OBDII Code B1815 2015 GMC Sierra - Driver Seat Recline Forward Switch Circuit - AutoCodes.com — B1815 2015 GMC Sierra Code - Driver Seat Recline Forward Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B1815 2015 GMC Sierra?

Faulty Driver Seat Adjuster Switch
Driver Seat Adjuster Switch harness is open or shorted
Driver Seat Adjuster Switch circuit poor electrical connection
Faulty Seat Memory Control Module

How to Fix the DTC B1815 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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1815 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 B1815 2015 GMC Sierra code?

Need more information on how to fix the B1815 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1815 2015 GMC Sierra 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 B1815 2015 GMC Sierra Code

1. What does OBDII code B1815 for a 2015 GMC Sierra indicate?

The B1815 code specifically relates to the Driver Seat Recline Forward Switch Circuit.

2. What are the common symptoms of OBDII code B1815 in a 2015 GMC Sierra?

Common symptoms include malfunctioning or unresponsive controls for adjusting the driver seat recline forward position.

3. What are the potential causes of OBDII code B1815 in a 2015 GMC Sierra?

Possible causes include a faulty driver seat switch, damaged wiring or connectors in the circuit, or a malfunctioning seat control module.

4. How can I diagnose the issue related to OBDII code B1815 in my 2015 GMC Sierra?

You can start by checking the wiring and connectors associated with the driver seat recline forward switch, testing the switch for proper functionality, and inspecting the seat control module for any signs of damage.

5. Can I continue to drive my 2015 GMC Sierra with OBDII code B1815 present?

While the vehicle may still be operational, it is recommended to address the issue promptly to ensure the proper functioning of the driver seat controls and overall safety.

6. How can I repair OBDII code B1815 in a 2015 GMC Sierra?

Repair options include replacing the faulty driver seat switch, repairing or replacing damaged wiring or connectors, or addressing any issues with the seat control module as needed.

7. Is it possible to reset OBDII code B1815 in a 2015 GMC Sierra without fixing the underlying issue?

Resetting the code without addressing the root cause will likely result in the code reappearing once the system detects the ongoing problem.

8. Are there any specific maintenance tips to prevent OBDII code B1815 in a 2015 GMC Sierra?

Regularly inspecting the driver seat controls, wiring, and connectors for any signs of wear or damage can help prevent issues related to code B1815.

9. Can a DIY enthusiast fix OBDII code B1815 in a 2015 GMC Sierra?

Depending on your experience and tools available, you may be able to diagnose and repair simple issues related to code B1815. However, more complex issues may require professional assistance.

10. How long does it typically take to repair OBDII code B1815 in a 2015 GMC Sierra?

The repair time can vary based on the specific cause of the issue, but it may take anywhere from a few hours to a day to complete the necessary repairs and testing.