AutoCodes – GMC – B243B 2018 GMC Sierra

B243B 2018 GMC Sierra Code - Right Front Seat Heating Switch

Quick Answer

The Body Control Module (BCM) detects an internal fault with the seat heating switch. Common causes include Faulty Right Front Seat Heating Switch, Right Front Seat Heating Switch harness is open or shorted, Right Front Seat Heating 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: B243B 2018 GMC Sierra indicates Right Front Seat Heating Switch.
Common causes: Common causes include Faulty Right Front Seat Heating Switch, Right Front Seat Heating Switch harness is open or shorted, Right Front Seat Heating 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 162

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 Apr 26, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B243B 2018 GMC Sierra Description

The Body Control Module (BCM) detects an internal fault with the seat heating switch. No external circuits are involved. The Diagnostic Trouble Code (DTC) sets when the BCM detects an internal fault with the seat heating switch.

OBDII Code B243B 2018 GMC Sierra - Right Front Seat Heating Switch - AutoCodes.com — B243B 2018 GMC Sierra Code - Right Front Seat Heating Switch

What does this mean?

What are the Possible Causes of the DTC B243B 2018 GMC Sierra?

Faulty Right Front Seat Heating Switch
Right Front Seat Heating Switch harness is open or shorted
Right Front Seat Heating Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B243B 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 B243B 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 B243B 2018 GMC Sierra code?

Need more information on how to fix the B243B 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 B243B 2018 GMC Sierra Code

1. What does OBDII code B243B for a 2018 GMC Sierra indicate?

- OBDII code B243B specifically relates to the Right Front Seat Heating Switch in a 2018 GMC Sierra.

2. What are common symptoms of OBDII code B243B in a 2018 GMC Sierra?

- Common symptoms include the right front seat heating switch not functioning properly or the seat not heating up as expected.

3. What are possible causes of OBDII code B243B in a 2018 GMC Sierra?

- Causes may include a faulty seat heating switch, damaged wiring, a blown fuse, or a malfunctioning seat heating element.

4. How can I diagnose the issue related to OBDII code B243B in my 2018 GMC Sierra?

- To diagnose the problem, you can start by checking the fuse related to the right front seat heating system, inspecting the wiring for any visible damage, and testing the seat heating switch for proper functionality.

5. Can I repair OBDII code B243B in a 2018 GMC Sierra myself?

- Depending on the cause, you may be able to repair the issue yourself by replacing the faulty seat heating switch, repairing damaged wiring, or replacing a blown fuse.

6. Is it safe to continue driving with OBDII code B243B in a 2018 GMC Sierra?

- It is generally safe to continue driving, but it is recommended to address the issue promptly to ensure the proper functioning of the right front seat heating system.

7. How much does it typically cost to repair OBDII code B243B in a 2018 GMC Sierra?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from a simple fuse replacement to a more involved repair involving the seat heating switch or wiring.

8. Are there any recalls or technical service bulletins related to OBDII code B243B in a 2018 GMC Sierra?

- It's recommended to check with GMC or a certified dealership for any recalls or technical service bulletins related to OBDII code B243B in the 2018 GMC Sierra.

9. Will resetting the OBDII code B243B in a 2018 GMC Sierra make the issue go away?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing OBDII code B243B to appear.

10. How can I prevent OBDII code B243B from appearing in my 2018 GMC Sierra in the future?

- Regularly maintaining the right front seat heating system, checking for any warning signs of issues, and addressing them promptly can help prevent OBDII code B243B from reoccurring in your 2018 GMC Sierra.