AutoCodes – GMC – B242C GMC

B242C GMC Code - Driver Seat Temperature Request Circuit

Quick Answer

When a heated or cooled seat switch is pressed, a LIN Bus message is sent to the Body Control Module (BCM) indicating the heated or cooled seat request. Common causes include Faulty Seat Blower Assembly, Seat Blower Assembly harness is open or shorted, Seat Blower Assembly 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: B242C GMC indicates Driver Seat Temperature Request Circuit.
Common causes: Common causes include Faulty Seat Blower Assembly, Seat Blower Assembly harness is open or shorted, Seat Blower Assembly 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 1,737

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 Dec 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B242C GMC Description

When a heated or cooled seat switch is pressed, a LIN Bus message is sent to the Body Control Module (BCM) indicating the heated or cooled seat request. The BCM then sends a low side Pulse Width Modulation (PWM) signal through the heated/cooled seat mode signal circuit to the seat back and seat cushion blower assemblies for the appropriate seat.

OBDII Code B242C GMC - Driver Seat Temperature Request Circuit - AutoCodes.com — B242C GMC Code - Driver Seat Temperature Request Circuit

What does this mean?

What are the Possible Causes of the DTC B242C GMC?

Faulty Seat Blower Assembly
Seat Blower Assembly harness is open or shorted
Seat Blower Assembly circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B242C 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 B242C 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 B242C GMC Code

1. What are the common symptoms of OBDII code B242C GMC (Driver Seat Temperature Request Circuit)?

- The common symptoms include malfunctioning or non-responsive driver seat temperature control, incorrect temperature readings, and the inability to adjust the seat temperature.

2. What are the possible causes of OBDII code B242C GMC?

- The code B242C GMC is typically caused by a faulty driver seat temperature sensor, damaged wiring or connectors in the temperature control circuit, or a problem with the seat control module.

3. How can I diagnose the OBDII code B242C GMC?

- To diagnose the code B242C GMC, you can use a diagnostic scanner to retrieve the trouble codes and then perform a visual inspection of the seat temperature sensor, wiring, and connectors for any visible damage.

4. Can I repair OBDII code B242C GMC myself?

- Depending on your level of automotive repair knowledge, you may be able to repair the code B242C GMC yourself by replacing the faulty driver seat temperature sensor, repairing damaged wiring, or addressing any issues with the seat control module.

5. Are there any tips for fixing OBDII code B242C GMC?

- Some tips for fixing the code B242C GMC include ensuring all electrical connections are secure, using a multimeter to test the sensor and wiring for continuity, and consulting the vehicle's service manual for specific diagnostic and repair procedures.

6. Is it safe to drive with OBDII code B242C GMC active?

- While driving with the code B242C GMC may not directly affect the vehicle's drivability, it is recommended to address the issue promptly to ensure the proper functioning of the driver seat temperature control system.

7. How much does it cost to repair OBDII code B242C GMC at a dealership or repair shop?

- The cost of repairing the OBDII code B242C GMC at a dealership or repair shop can vary depending on the specific cause of the issue, but it may include costs for parts, labor, and diagnostic services.

8. Can resetting the OBDII system clear the B242C GMC code?

- Resetting the OBDII system may temporarily clear the B242C GMC code, but if the underlying issue causing the code is not addressed, the code is likely to reappear once the system detects the problem again.

9. Will fixing OBDII code B242C GMC affect my vehicle's emissions or performance?

- Fixing the OBDII code B242C GMC is more likely to improve the driver seat temperature control system rather than directly impacting vehicle emissions or performance.

10. How can I prevent OBDII code B242C GMC from recurring in the future?

- To prevent the recurrence of the code B242C GMC, it is essential to perform regular maintenance on the driver seat temperature control system, inspect wiring and connectors for damage, and address any issues promptly to avoid further damage.