AutoCodes – GMC – B191A 2018 GMC Sierra

B191A 2018 GMC Sierra Code - Front Heated Seat Module

Quick Answer

The Diagnostic Trouble Code (DTC) will be set when an internal fault is detected inside the Front Heated Seat Module. Common causes include Faulty Front Heated Seat Module, Front Heated Seat Module harness is open or shorted, Front Heated Seat Module 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
B191A 2018 GMC Sierra indicates Front Heated Seat Module.
Common causes
Common causes include Faulty Front Heated Seat Module, Front Heated Seat Module harness is open or shorted, Front Heated Seat Module 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 192
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 24, 2023
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Code B191A 2018 GMC Sierra Description

The Diagnostic Trouble Code (DTC) will be set when an internal fault is detected inside the Front Heated Seat Module. No external circuits are involved
OBDII Code B191A 2018 GMC Sierra - Front Heated Seat Module - AutoCodes.com
B191A 2018 GMC Sierra Code - Front Heated Seat Module

What are the Possible Causes of the DTC B191A 2018 GMC Sierra?

  • Faulty Front Heated Seat Module
  • Front Heated Seat Module harness is open or shorted
  • Front Heated Seat Module circuit poor electrical connection

How to Fix the DTC B191A 2018 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B191A 2018 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 B191A 2018 GMC Sierra code?

Need more information on how to fix the B191A 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B191A 2018 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 B191A 2018 GMC Sierra Code

1. What does OBDII code B191A for a 2018 GMC Sierra Front Heated Seat Module indicate?

The B191A code specifically points to an issue with the front heated seat module in a 2018 GMC Sierra.

2. What are the common symptoms of OBDII code B191A in a 2018 GMC Sierra?

Common symptoms include non-functioning front heated seats, uneven heating in the seats, or complete seat heating failure.

3. What are the possible causes of OBDII code B191A in a 2018 GMC Sierra?

Potential causes of this code may include a faulty heated seat module, damaged wiring or connectors, a blown fuse, or a malfunctioning temperature sensor.

4. How can I diagnose the OBDII code B191A in my 2018 GMC Sierra for the Front Heated Seat Module?

Diagnosing this code typically involves inspecting the heated seat module, checking the wiring and connectors for any visible damage, testing the fuses related to the heated seats, and verifying the operation of the temperature sensor.

5. Can I repair OBDII code B191A in my 2018 GMC Sierra Front Heated Seat Module myself?

Depending on your level of automotive repair experience, you may be able to address this code by replacing the faulty heated seat module, repairing damaged wiring or connectors, ensuring proper fuse functionality, or recalibrating the temperature sensor.

6. Is it safe to drive my 2018 GMC Sierra with OBDII code B191A related to the Front Heated Seat Module?

While the vehicle should still be safe to drive with this code, it is recommended to address the issue promptly to restore the functionality of the front heated seats.

7. Can OBDII code B191A in a 2018 GMC Sierra Front Heated Seat Module affect other vehicle systems?

Typically, this code is isolated to the front heated seat module and should not impact other vehicle systems unless there are underlying electrical issues present.

8. How much does it cost to repair OBDII code B191A in a 2018 GMC Sierra related to the Front Heated Seat Module?

The cost of repair can vary depending on the exact cause of the issue, but expenses may include parts like a new heated seat module, labor for installation, and diagnostic fees.

9. Are there any recalls or technical service bulletins related to OBDII code B191A in a 2018 GMC Sierra Front Heated Seat Module?

It is advisable to check with GMC or consult online resources to determine if there are any relevant recalls or technical service bulletins addressing this specific OBDII code in the 2018 GMC Sierra.

10. How often does OBDII code B191A occur in a 2018 GMC Sierra Front Heated Seat Module?

The occurrence of this code can vary, but it is not an uncommon issue in vehicles with front heated seats like the 2018 GMC Sierra.

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