AutoCodes – GMC – B2187 GMC

B2187 GMC Code - Power Seat Switch Circuit

Quick Answer

The seat adjuster switch signal circuits are supplied 12 volts through resistors within the Memory Seat Module. Common causes include Faulty Power Seat Switch, Power Seat Switch harness is open or shorted, Power Seat 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: B2187 GMC indicates Power Seat Switch Circuit.
Common causes: Common causes include Faulty Power Seat Switch, Power Seat Switch harness is open or shorted, Power Seat 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.

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Code Popularity 514

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 Sep 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2187 GMC Description

The seat adjuster switch signal circuits are supplied 12 volts through resistors within the Memory Seat Module. When a seat adjuster switch is pressed the signal circuit is grounded. Closing the signal circuit to ground pulls the signal circuit voltage low indicating to the Memory Seat Module the switch status is active. The OBDII code is set when a seat adjuster switch input to the Memory Seat Module is active for more than 20 seconds.

OBDII Code B2187 GMC - Power Seat Switch Circuit - AutoCodes.com — B2187 GMC Code - Power Seat Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B2187 GMC?

Faulty Power Seat Switch
Power Seat Switch harness is open or shorted
Power Seat Switch circuit poor electrical connection
Faulty Memory Seat Module

How to Fix the DTC B2187 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 B2187 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.

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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 B2187 GMC Code

1. What are the common symptoms of OBDII code B2187 GMC related to the Power Seat Switch Circuit?

- Common symptoms include malfunctioning power seat controls, inability to adjust the seat position, or erratic seat movements.

2. What are the possible causes of OBDII code B2187 GMC for the Power Seat Switch Circuit?

- Possible causes may include faulty power seat switch, damaged wiring or connectors, a blown fuse, or a malfunctioning power seat control module.

3. How can I diagnose the OBDII code B2187 GMC for the Power Seat Switch Circuit?

- Diagnosis involves inspecting the power seat switch for physical damage, checking the wiring and connectors for any issues, and using a diagnostic scan tool to analyze the power seat control module.

4. Can a blown fuse cause OBDII code B2187 GMC to appear for the Power Seat Switch Circuit?

- Yes, a blown fuse related to the power seat circuit can trigger the B2187 code, as the power supply interruption can disrupt the seat switch operation.

5. What repair tips can help fix OBDII code B2187 GMC for the Power Seat Switch Circuit?

- Repair tips include checking and replacing any blown fuses, repairing or replacing damaged wiring, testing and replacing a faulty power seat switch, and resetting the power seat control module.

6. Is it safe to drive with OBDII code B2187 GMC triggered for the Power Seat Switch Circuit?

- It is generally safe to drive with this code, but you may experience inconvenience due to the power seat not functioning properly. It is recommended to address the issue promptly.

7. How important is it to address OBDII code B2187 GMC for the Power Seat Switch Circuit?

- While not critical for the vehicle's operation, resolving this code is important for driver comfort and convenience, especially if the power seat is essential for adjusting driving position.

8. Can a DIY enthusiast fix OBDII code B2187 GMC related to the Power Seat Switch Circuit?

- Depending on the root cause, DIY enthusiasts with knowledge of automotive electrical systems may be able to diagnose and repair this code. However, complex issues may require professional assistance.

9. What is the typical cost to repair OBDII code B2187 GMC for the Power Seat Switch Circuit?

- The repair cost can vary significantly based on the underlying cause, but it may involve expenses for parts such as a new power seat switch or module, as well as labor costs if professional help is needed.

10. Will resetting the OBDII system clear the B2187 code for the Power Seat Switch Circuit?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and fix the root cause of the problem.