AutoCodes – GMC – B2355 2018 GMC Sierra

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

Quick Answer

The Seat Memory Control Module monitors the position of the seat motors by using hall effect position sensors which are an internal part of each motor. Common causes include Faulty Driver Seat Front Vertical Motor, Driver Seat Front Vertical Motor harness is open or shorted, Driver Seat Front Vertical Motor 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: B2355 2018 GMC Sierra indicates Driver Seat Front Vertical Position Sensor Circuit.
Common causes: Common causes include Faulty Driver Seat Front Vertical Motor, Driver Seat Front Vertical Motor harness is open or shorted, Driver Seat Front Vertical Motor 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 391

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 17, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B2355 2018 GMC Sierra Description

The Seat Memory Control Module monitors the position of the seat motors by using hall effect position sensors which are an internal part of each motor. The module supplies each sensor with a 12 V reference circuit only when any seat motor is active, and a low side signal circuit. During seat motor operation, the hall effect position sensor provides a determined number of pulse signals for every revolution of the motor shaft. The scan tool displays these pulse signals as counts that range from 0–65,535. The module counts the feedback pulses from each sensor to determine seat position and end-of-travel limits for each of the seat motors. High scan tool count values indicate forward or upward seat positions while low count values indicate rearward or downward seat positions. The Diagnostic Trouble Code (DTC) will be set when there is a fault in the Driver Seat Front Vertical Position Sensor Circuit.

OBDII Code B2355 2018 GMC Sierra - Driver Seat Front Vertical Position Sensor Circuit - AutoCodes.com — B2355 2018 GMC Sierra Code - Driver Seat Front Vertical Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B2355 2018 GMC Sierra?

Faulty Driver Seat Front Vertical Motor
Driver Seat Front Vertical Motor harness is open or shorted
Driver Seat Front Vertical Motor circuit poor electrical connection
Faulty Driver Seat Memory Control Module

How to Fix the DTC B2355 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 does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2355 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 B2355 2018 GMC Sierra code?

Need more information on how to fix the B2355 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2355 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 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.