AutoCodes – GMC – B2108 GMC

B2108 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: B2108 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 689

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 B2108 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 B2108 GMC - Power Seat Switch Shorted - AutoCodes.com — B2108 GMC Code - Power Seat Switch Shorted

What does this mean?

What are the Possible Causes of the DTC B2108 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 B2108 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 B2108 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 B2108 GMC Code

1. What are the common symptoms of OBDII code B2108 GMC (Power Seat Switch Shorted)?

The common symptoms include non-functioning power seat controls, the seat not moving in any direction, and potential loss of other electronic functions in the vehicle.

2. What are the possible causes of the OBDII code B2108 GMC?

The code B2108 GMC can be caused by a short circuit in the power seat switch wiring, a faulty power seat switch, or issues with the power seat control module.

3. How can I diagnose the cause of OBDII code B2108 GMC?

To diagnose the issue, you can start by checking the wiring harness for any visible damage, testing the power seat switch for continuity, and using a diagnostic scan tool to retrieve trouble codes and data from the power seat control module.

4. Can I repair OBDII code B2108 GMC on my own?

Depending on your skill level and access to tools, you may be able to repair the issue on your own by replacing the faulty power seat switch, repairing the wiring harness, or resetting the power seat control module.

5. Is it safe to drive with OBDII code B2108 GMC present?

It is not recommended to drive with the code B2108 GMC present, as it can indicate a potential safety hazard if the power seat is not functioning correctly. It is best to address the issue as soon as possible.

6. Will resetting the OBDII code B2108 GMC make it go away permanently?

Resetting the code may temporarily clear it, but if the underlying issue causing the code is not addressed, it is likely to reappear. It is essential to diagnose and repair the root cause of the code.

7. How much does it cost to fix OBDII code B2108 GMC at a repair shop?

The cost of fixing OBDII code B2108 GMC can vary depending on the specific cause of the issue, labor rates in your area, and the cost of parts. It is recommended to get a diagnostic from a qualified mechanic for an accurate estimate.

8. Can a faulty power seat switch cause other electrical problems in the vehicle?

Yes, a faulty power seat switch can potentially cause other electrical problems in the vehicle if it is shorted or malfunctioning. It is essential to address the issue promptly to prevent further complications.

9. Are there any preventive measures to avoid OBDII code B2108 GMC in the future?

To prevent OBDII code B2108 GMC, you can regularly inspect the power seat switch wiring for damage, avoid overloading the power seat controls, and promptly address any issues with the power seat functionality.

10. How long does it typically take to repair OBDII code B2108 GMC?

The repair time for OBDII code B2108 GMC can vary depending on the cause of the issue and the complexity of the repair. It may take anywhere from a few hours to a day to diagnose and fix the problem.