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Engine-Codes – GMC – B1750 2016 GMC Sierra

B1750 2016 GMC Sierra Code - Driver Seat Rear Down Switch Circuit

Quick Answer

The B1750 diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the driver seat rear down switch circuit. Common causes include Faulty driver seat rear down switch, Damaged or corroded wiring in the seat control circuit, Malfunctioning 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 2016 GMC Sierra indicates Driver Seat Rear Down Switch Circuit.
Common causes
Common causes include Faulty driver seat rear down switch, Damaged or corroded wiring in the seat control circuit, Malfunctioning 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 16, 2024
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Code B1750 2016 GMC Sierra Description

The B1750 diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the driver seat rear down switch circuit. This code indicates that there is a malfunction in the circuit responsible for controlling the rearward movement of the driver's seat. The driver seat in modern vehicles is equipped with various switches that allow the driver to adjust the seat position for comfort and visibility while driving. The rear down switch specifically controls the rearward movement of the seat, enabling the driver to adjust the seat's position closer to or further away from the steering wheel.

OBDII Code B1750 2016 GMC Sierra - Driver Seat Rear Down Switch Circuit
B1750 2016 GMC Sierra Code - Driver Seat Rear Down Switch Circuit

Common Causes of B1750 2016 GMC Sierra

  1. Faulty driver seat rear down switch.
  2. Damaged or corroded wiring in the seat control circuit.
  3. Malfunctioning seat control module.
  4. Loose or disconnected electrical connectors in the seat control system.
  5. Electrical interference from aftermarket accessories or modifications.

Symptoms of B1750 2016 GMC Sierra

  1. Inability to adjust the driver seat position rearward.
  2. Erratic movement of the driver seat when using the rear down switch.
  3. Check engine light illuminated on the dashboard.
  4. Audible clicking or buzzing noises when attempting to adjust the seat position.
  5. Intermittent loss of power to the driver seat controls.

How to Fix B1750 2016 GMC Sierra

  1. Begin by diagnosing the specific cause of the issue using a scan tool to retrieve the DTC and inspecting the seat control circuit for any visible damage.
  2. Test the driver seat rear down switch for proper functionality by checking for continuity and proper signal output.
  3. Inspect the wiring harness for any signs of damage, corrosion, or loose connections. Repair or replace any damaged wiring as needed.
  4. If the issue persists, replace the seat control module with a new unit to restore proper operation of the driver seat controls.
  5. Clear the DTC from the PCM memory and test the driver seat to ensure that the rear down switch circuit is functioning correctly.

Cost to Fix B1750 2016 GMC Sierra

The typical repair costs for addressing the B1750 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, the cost of replacing a faulty switch or repairing damaged wiring can range from $100 to $300. If the seat control module needs to be replaced, the cost may increase to $200 to $500, including parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops often offer more competitive pricing. For a more accurate cost estimate, it is recommended to consult with a local auto repair shop.

What does this mean?

Tech Notes for B1750 2016 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 2016 GMC Sierra Code

1. What does the OBDII code B1750 mean on a 2016 GMC Sierra?

The code B1750 indicates a problem with the driver seat rear down switch circuit, which controls the rearward tilt of the driver's seat.

2. What are the common symptoms of code B1750 in a 2016 GMC Sierra?

Symptoms may include the driver seat not tilting down properly, limited adjustability, or no response when using the seat adjustment controls.

3. What causes the B1750 code to appear in a GMC Sierra?

Common causes include a faulty seat adjustment switch, damaged wiring or connectors in the circuit, or a malfunctioning seat motor.

4. Can I still drive my 2016 GMC Sierra with the B1750 code?

Yes, you can still drive the vehicle, but the driver seat adjustability may be limited, which could affect comfort and driving posture.

5. How do I diagnose the B1750 code in a 2016 GMC Sierra?

Diagnosis involves inspecting the seat adjustment switch, checking for damaged wiring or loose connections, and testing the seat motor for functionality.

6. How do I repair the B1750 code on a GMC Sierra?

Repairs may include replacing a faulty seat adjustment switch, repairing or replacing damaged wiring, or replacing the seat motor if necessary.

7. How much does it cost to fix the B1750 code in a 2016 GMC Sierra?

The cost depends on the exact issue but could range from $50 for minor wiring repairs to $300 or more if the seat motor or switch needs replacement.

8. Can a blown fuse cause the B1750 code to appear?

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

9. Will clearing the B1750 code fix the problem in my GMC Sierra?

Clearing the code will only temporarily remove it; the underlying issue must be resolved to prevent the code from reappearing.

10. Is the B1750 code a common issue for the 2016 GMC Sierra?

It is not a widespread issue but can occur if the seat adjustment components or wiring are worn or damaged over time.

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