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Engine-Codes – GMC – B2355 2018 GMC Sierra

B2355 2018 GMC Sierra Code - Driver Seat Front Vertical Position Sensor Circuit

Quick Answer

The B2355 diagnostic trouble code (DTC) for the 2018 GMC Sierra relates to the driver seat front vertical position sensor circuit. Common causes include Faulty driver seat front vertical position sensor, Wiring issues or loose connections in the sensor circuit, ECM malfunction. 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
B2355 2018 GMC Sierra indicates Driver Seat Front Vertical Position Sensor Circuit.
Common causes
Common causes include Faulty driver seat front vertical position sensor, Wiring issues or loose connections in the sensor circuit, ECM malfunction.
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 16, 2024
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Code B2355 2018 GMC Sierra Description

The B2355 diagnostic trouble code (DTC) for the 2018 GMC Sierra relates to the driver seat front vertical position sensor circuit. This code indicates that there is a malfunction in the sensor circuit responsible for detecting the vertical position of the driver's seat. The sensor is crucial for adjusting the seat height to ensure the driver's comfort and safety while operating the vehicle. When this sensor circuit fails, it can lead to issues with seat adjustment, potentially causing discomfort for the driver and compromising their ability to operate the vehicle safely.

OBDII Code B2355 2018 GMC Sierra - Driver Seat Front Vertical Position Sensor Circuit
B2355 2018 GMC Sierra Code - Driver Seat Front Vertical Position Sensor Circuit

Common Causes of B2355 2018 GMC Sierra

  1. Faulty driver seat front vertical position sensor.
  2. Wiring issues or loose connections in the sensor circuit.
  3. ECM malfunction.
  4. Mechanical issues with the seat adjustment mechanism.
  5. Corrosion or damage to sensor components.

Symptoms of B2355 2018 GMC Sierra

  1. Inability to adjust the driver's seat height.
  2. Incorrect seat height adjustment.
  3. Seat moving on its own without input.
  4. Warning light on the dashboard related to the seat control system.

How to Fix B2355 2018 GMC Sierra

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to read the DTC and pinpoint the problem.
  2. Inspect the wiring and connections in the driver seat front vertical position sensor circuit for any damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the driver seat front vertical position sensor for proper functionality. Replace the sensor if it is found to be faulty.
  4. Check the ECM for any malfunctions or errors related to the sensor circuit. Reset or replace the ECM if needed.
  5. Test the seat adjustment mechanism to ensure proper operation after repairing the sensor circuit.

Cost to Fix B2355 2018 GMC Sierra

The cost of repairing the driver seat front vertical position sensor circuit can vary depending on the specific cause of the issue and the labor rates in your area. On average, the parts for this repair may range from $100 to $300, while labor costs can add another $100 to $200. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from local shops for a more accurate estimate.

What does this mean?

Tech Notes for B2355 2018 GMC Sierra

B1855:01 Driver Seat Front Vertical Position Sensor Circuit Short to Battery

B1855:02 Driver Seat Front Vertical Position Sensor Circuit Short to Ground

B1855:06 Driver Seat Front Vertical Position Sensor Circuit Low Voltage/Open

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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 B2355 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code B2355 in a 2018 GMC Sierra related to the Driver Seat Front Vertical Position Sensor Circuit?

The common symptoms include the driver seat not moving vertically or experiencing erratic movements.

2. What are the possible causes of OBDII code B2355 in a 2018 GMC Sierra?

Possible causes include a faulty driver seat front vertical position sensor, damaged wiring or connectors in the circuit, or a malfunctioning control module.

3. How can I diagnose the issue related to OBDII code B2355 in my 2018 GMC Sierra?

Diagnosis involves inspecting the wiring and connectors for any visible damage, testing the sensor for proper functionality, and using a diagnostic scanner to read the code and reset it for further testing.

4. Can I repair OBDII code B2355 in my 2018 GMC Sierra by myself?

Depending on your level of automotive experience, you may be able to repair this issue by replacing the faulty sensor, repairing damaged wiring, or addressing any connector issues. However, professional assistance may be required for more complex repairs.

5. Are there any temporary solutions for addressing the symptoms of OBDII code B2355 in a 2018 GMC Sierra?

You may try resetting the code using a diagnostic scanner to see if the issue resolves temporarily. However, it is essential to address the root cause of the problem to prevent further issues.

6. Is it safe to drive my 2018 GMC Sierra with OBDII code B2355 related to the Driver Seat Front Vertical Position Sensor Circuit?

It is not recommended to drive the vehicle with this issue, as the driver seat may not function correctly, leading to potential safety hazards and discomfort while driving.

7. How much does it typically cost to repair OBDII code B2355 in a 2018 GMC Sierra?

The cost of repair can vary depending on the specific cause of the issue and whether you choose to perform the repair yourself or seek professional assistance. Costs may include parts, labor, and diagnostic fees.

8. Can weather or environmental factors contribute to triggering OBDII code B2355 in a 2018 GMC Sierra?

While weather or environmental factors are not common causes of this code, extreme conditions or exposure to moisture could potentially lead to sensor or wiring issues over time.

9. How long does it usually take to repair OBDII code B2355 in a 2018 GMC Sierra?

The repair time can vary based on the complexity of the issue and the availability of parts. Simple repairs may take a few hours, while more involved repairs could take longer.

10. Is it necessary to clear the OBDII code B2355 after repairing the issue in a 2018 GMC Sierra?

Yes, it is important to clear the code using a diagnostic scanner after repairing the problem to ensure the issue is resolved and to prevent it from triggering the Check Engine Light again.

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