AutoCodes – GMC – B2102 GMC

B2102 GMC Code - Power Seat Switch Shorted

Quick Answer

When the Power Seat Switches are pressed, the Memory Seat Module (MSM) receives an input from the switch. Common causes include Faulty Power Seat Adjuster Switch, Power Seat Adjuster Switch harness is open or shorted, Power 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: B2102 GMC indicates Power Seat Switch Shorted.
Common causes: Common causes include Faulty Power Seat Adjuster Switch, Power Seat Adjuster Switch harness is open or shorted, Power 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.

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Code Popularity 652

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 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2102 GMC Description

When the Power Seat Switches are pressed, the Memory Seat Module (MSM) receives an input from the switch. The MSM commands the driver seat to move in response to the switch input. If a seat switch continues to be active for 30 seconds after the motor controlled by that switch reaches the end of its travel, the switch will be considered shorted and the MSM will set the Diagnostic Trouble Code (DTC) or if a position sensor DTC is current and the associated switch is active for 30 continuous seconds, the switch will be considered shorted and the MSM will set the DTC.

OBDII Code B2102 GMC - Power Seat Switch Shorted - AutoCodes.com — B2102 GMC Code - Power Seat Switch Shorted

What does this mean?

What are the Possible Causes of the DTC B2102 GMC?

Faulty Power Seat Adjuster Switch
Power Seat Adjuster Switch harness is open or shorted
Power Seat Adjuster Switch circuit poor electrical connection
Faulty Memory Seat Module (MSM)

How to Fix the DTC B2102 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 B2102 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 B2102 GMC Code

1. What are the common symptoms of OBDII code B2102 GMC (Power Seat Switch Shorted)?

The common symptoms of this code may include inoperative power seat controls, erratic movement of the power seat, or a power seat that gets stuck in one position.

2. What are the possible causes of OBDII code B2102 GMC (Power Seat Switch Shorted)?

Possible causes of this code include a short circuit in the power seat switch wiring, a faulty power seat switch, or a malfunctioning power seat control module.

3. How can I diagnose OBDII code B2102 GMC (Power Seat Switch Shorted)?

To diagnose this code, you can start by visually inspecting the power seat switch wiring for any visible damage or signs of a short circuit. You can also use a multimeter to test the continuity of the wiring and check the power seat switch for proper functionality.

4. Can I drive my vehicle with OBDII code B2102 GMC (Power Seat Switch Shorted) active?

It is generally safe to drive your vehicle with this code active, as it primarily affects the power seat function and does not pose a significant safety risk. However, it is recommended to address the issue promptly to avoid further damage or inconvenience.

5. How can I repair OBDII code B2102 GMC (Power Seat Switch Shorted)?

To repair this code, you may need to replace the faulty power seat switch, repair any damaged wiring, or replace the power seat control module if necessary. It is recommended to follow the manufacturer's repair procedures for your specific vehicle model.

6. Is OBDII code B2102 GMC (Power Seat Switch Shorted) a common issue in GMC vehicles?

While this code may not be extremely common, power seat-related issues, including shorted power seat switches, can occur in various GMC vehicles equipped with power seat controls.

7. Can a DIY enthusiast fix OBDII code B2102 GMC (Power Seat Switch Shorted) at home?

Depending on your experience and access to tools, DIY enthusiasts with some automotive repair knowledge may be able to address this code at home by following repair guides and using basic diagnostic tools.

8. Does resetting the OBDII system clear OBDII code B2102 GMC (Power Seat Switch Shorted)?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the power seat switch short persists, the code is likely to reappear. It is essential to diagnose and address the root cause of the problem.

9. Are there any preventive maintenance tips to avoid OBDII code B2102 GMC (Power Seat Switch Shorted)?

Regularly inspecting the power seat controls, avoiding excessive force when operating the power seat, and addressing any issues promptly can help prevent the occurrence of this code in your GMC vehicle.

10. Can a power seat switch short lead to other electrical problems in the vehicle?

While a power seat switch short is more likely to affect the power seat function specifically, it is possible for electrical issues in one part of the vehicle to potentially impact other systems. Regular maintenance and prompt repairs can help prevent such issues.