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Engine-Codes – GMC – B1750 2015 GMC Sierra

B1750 2015 GMC Sierra Code - Driver Seat Rear Down Switch Circuit

Quick Answer

The B1750 diagnostic trouble code for a 2015 GMC Sierra refers to an issue with the driver seat rear down switch circuit. Common causes include Faulty rear down switch in the driver seat, Damaged wiring or connectors in the driver seat circuit, Defective driver seat control module. 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
B1750 2015 GMC Sierra indicates Driver Seat Rear Down Switch Circuit.
Common causes
Common causes include Faulty rear down switch in the driver seat, Damaged wiring or connectors in the driver seat circuit, Defective driver seat control module.
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 10, 2024
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Code B1750 2015 GMC Sierra Description

The B1750 diagnostic trouble code for a 2015 GMC Sierra refers to an issue with the driver seat rear down switch circuit. This code indicates that there is a malfunction in the electrical circuit related to the switch that controls the rearward movement of the driver's seat. The driver seat in modern vehicles is equipped with various switches and controls that allow the driver to adjust the seat's position for comfort and driving convenience. When the rear down switch circuit is not functioning properly, it can lead to an inability to move the seat backward, affecting the driver's comfort and potentially creating safety hazards.

OBDII Code B1750 2015 GMC Sierra - Driver Seat Rear Down Switch Circuit
B1750 2015 GMC Sierra Code - Driver Seat Rear Down Switch Circuit

Common Causes of B1750 2015 GMC Sierra

  1. Faulty rear down switch in the driver seat.
  2. Damaged wiring or connectors in the driver seat circuit.
  3. Defective driver seat control module.
  4. Corrosion or water damage in the electrical connections.
  5. Issues with the powertrain control module.

Symptoms of B1750 2015 GMC Sierra

  1. Inability to move the driver's seat backward.
  2. Driver's seat moves in the wrong direction when adjusting.
  3. Check engine light is illuminated on the dashboard.
  4. Erratic behavior of the driver seat controls.
  5. Unusual noises coming from the driver seat mechanism.

How to Fix B1750 2015 GMC Sierra

  1. Begin by diagnosing the specific cause of the issue using a scan tool to retrieve the trouble code and pinpoint the faulty component.
  2. Inspect the wiring and connectors in the driver seat circuit for any damage or corrosion. Repair or replace as necessary.
  3. Test the rear down switch in the driver seat to determine if it is functioning properly. Replace if faulty.
  4. Check the driver seat control module for any signs of malfunction. Replace if needed.
  5. Clear the trouble code from the PCM memory and test the driver seat to ensure proper operation.

Cost to Fix B1750 2015 GMC Sierra

The cost of repairing the driver seat rear down switch circuit issue in a 2015 GMC Sierra can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay between $150 to $400 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to get quotes from multiple sources before proceeding with the repair.

What does this mean?

Tech Notes for B1750 2015 GMC Sierra









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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 B1750 2015 GMC Sierra Code

1. What does OBDII code B1750 mean on a 2015 GMC Sierra?

Code B1750 refers to an issue with the Driver Seat Rear Down Switch Circuit, which controls the rear portion of the driver seat's height adjustment.

2. What are the common symptoms of code B1750 in a 2015 GMC Sierra?

Symptoms may include the rear portion of the driver seat not adjusting properly, unresponsive seat controls, or an illuminated warning light on the dashboard.

3. What causes the B1750 code to trigger on a GMC Sierra?

This code can be caused by a faulty seat adjustment switch, damaged wiring or connectors related to the circuit, or a malfunctioning seat motor.

4. How do I diagnose the B1750 code in a 2015 GMC Sierra?

Diagnosis typically involves inspecting the seat adjustment switch, checking wiring and connectors for damage or corrosion, and testing the seat motor for functionality.

5. Can I still drive my GMC Sierra with a B1750 code?

Yes, the vehicle is safe to drive, but the rear height adjustment of the driver seat may not work until the issue is resolved.

6. How do I fix the B1750 code on my 2015 GMC Sierra?

Repairs may include replacing the seat adjustment switch, repairing or replacing damaged wiring, or replacing the seat motor if it’s faulty.

7. How much does it cost to repair the B1750 code on a GMC Sierra?

The cost can vary, but repairing or replacing the seat adjustment switch typically ranges from $100 to $300, depending on labor rates and part prices.

8. Can a blown fuse cause the B1750 code in a 2015 GMC Sierra?

While unlikely, a blown fuse affecting the seat adjustment system could potentially contribute to this issue and should be checked during diagnosis.

9. Is the B1750 code a common problem in GMC Sierra trucks?

It’s not a widely reported issue, but it can occur due to regular wear and tear on seat adjustment components.

10. Do I need a professional to repair the B1750 code on my 2015 GMC Sierra?

If you’re familiar with automotive electrical systems, you may be able to diagnose and repair it yourself. Otherwise, it’s best to consult a professional mechanic.

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