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Engine-Codes – GMC – B191A 2016 GMC Sierra

B191A 2016 GMC Sierra Code - Front Heated Seat Module

Quick Answer

The B191A code on a 2016 GMC Sierra specifically refers to an issue with the Front Heated Seat Module. Common causes include Faulty Front Heated Seat Module, Wiring issues or shorts in the electrical system, Blown fuse related to the heated seat circuit. 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 2016 GMC Sierra indicates Front Heated Seat Module.
Common causes
Common causes include Faulty Front Heated Seat Module, Wiring issues or shorts in the electrical system, Blown fuse related to the heated seat circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code B191A 2016 GMC Sierra Description

The B191A code on a 2016 GMC Sierra specifically refers to an issue with the Front Heated Seat Module. This module is responsible for controlling the heating function of the front seats in the vehicle. When this code is triggered, it indicates a malfunction or failure within the module that is preventing the heated seats from operating properly.

OBDII Code B191A 2016 GMC Sierra - Front Heated Seat Module
B191A 2016 GMC Sierra Code - Front Heated Seat Module

Common Causes of B191A 2016 GMC Sierra

  1. Faulty Front Heated Seat Module.
  2. Wiring issues or shorts in the electrical system.
  3. Blown fuse related to the heated seat circuit.
  4. Corrosion or damage to the connectors or terminals.
  5. Overheating of the heating elements in the seats.

Symptoms of B191A 2016 GMC Sierra

  1. Front heated seats not warming up or taking longer than usual to heat up.
  2. Inconsistent heating levels in the front seats.
  3. Error message on the vehicle's dashboard related to the heated seats.
  4. Burning smell or smoke coming from the front seats.
  5. Front heated seats turning on/off randomly without user input.

How to Fix B191A 2016 GMC Sierra

  1. Begin by diagnosing the issue using a diagnostic scanner to confirm the B191A code and pinpoint the specific problem within the Front Heated Seat Module.
  2. Inspect the wiring and connectors related to the heated seat circuit for any signs of damage or corrosion. Repair or replace as necessary.
  3. Check the fuse for the heated seat circuit and replace if blown.
  4. If the Front Heated Seat Module is determined to be faulty, it will need to be replaced with a new module.
  5. After the repair is completed, clear the diagnostic trouble codes and test the heated seats to ensure they are functioning properly.

Cost to Fix B191A 2016 GMC Sierra

The cost of repairing a Front Heated Seat Module on a 2016 GMC Sierra can vary depending on the specific issue and the cost of parts and labor. In general, the cost of a new Front Heated Seat Module can range from $200 to $500, depending on the quality and brand of the part. Labor costs for this repair can range from $100 to $300, depending on the shop's hourly rates and the complexity of the repair. In total, the repair for this issue could cost between $300 and $800, but it's important to consult with a professional technician for a more accurate estimate based on your vehicle's specific needs.

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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 B191A 2016 GMC Sierra Code

1. What does OBDII code B191A for the Front Heated Seat Module indicate on a 2016 GMC Sierra?

This code typically indicates a fault or malfunction in the front heated seat module of the vehicle.

2. What are some common symptoms of OBDII code B191A on a 2016 GMC Sierra?

Common symptoms may include non-functioning or erratic operation of the front heated seats, such as the seats not heating up as expected.

3. What are possible causes of OBDII code B191A on a 2016 GMC Sierra?

Potential causes of this code include a faulty front heated seat module, wiring issues, blown fuses, or a problem with the seat heating elements.

4. How can I diagnose the issue related to OBDII code B191A on my 2016 GMC Sierra?

To diagnose the problem, it is recommended to use a diagnostic scanner to retrieve the specific error codes, inspect the wiring and connectors associated with the front heated seats, and test the seat heating elements.

5. Can I repair OBDII code B191A on my 2016 GMC Sierra myself?

If you are comfortable working with automotive electrical systems, you may be able to repair this issue yourself by addressing any wiring issues, replacing the front heated seat module, or fixing the seat heating elements.

6. Should I reset the OBDII code B191A after making repairs on my 2016 GMC Sierra?

Yes, it is advisable to clear the error code after resolving the underlying issue related to the front heated seat module to ensure that the system recognizes the repair and functions properly.

7. Are there any safety precautions to keep in mind when working on OBDII code B191A on a 2016 GMC Sierra?

When working on electrical components like the front heated seat module, always disconnect the vehicle's battery to prevent any accidental shorts or shocks.

8. How much does it typically cost to repair OBDII code B191A on a 2016 GMC Sierra at a professional auto repair shop?

The cost of repairing this code can vary depending on the specific issue, but it may involve labor costs for diagnosis and repair, as well as the cost of any replacement parts needed.

9. Can OBDII code B191A on a 2016 GMC Sierra cause any other issues with the vehicle?

While this code specifically relates to the front heated seat module, unresolved issues with the heating system may impact passenger comfort but should not affect the overall performance or safety of the vehicle.

10. Is it important to address OBDII code B191A promptly on my 2016 GMC Sierra?

It is recommended to address this code in a timely manner to ensure the proper functioning of the front heated seat system, especially in colder weather when the seat heaters may be needed for comfort.

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