Engine-CodesGMC – B1755 2017 GMC Sierra

B1755 2017 GMC Sierra Code - Driver Seat Assembly Forward Switch Circuit

Quick Answer

The B1755 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the driver seat assembly forward switch circuit. Common causes include Faulty driver seat assembly forward switch, Damaged or frayed wiring in the seat adjustment circuit, Loose connections or poor electrical contact. 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
B1755 2017 GMC Sierra indicates Driver Seat Assembly Forward Switch Circuit.
Common causes
Common causes include Faulty driver seat assembly forward switch, Damaged or frayed wiring in the seat adjustment circuit, Loose connections or poor electrical contact.
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.
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code B1755 2017 GMC Sierra Description

The B1755 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the driver seat assembly forward switch circuit. This code indicates that there is a malfunction in the electrical circuit that controls the forward movement of the driver's seat. The driver seat assembly forward switch is responsible for adjusting the seat position to move it forward, backward, up, or down. When this circuit malfunctions, it can prevent the driver from being able to adjust the seat position, leading to discomfort and potentially compromising driving safety and comfort.

OBDII Code B1755 2017 GMC Sierra - Driver Seat Assembly Forward Switch Circuit
B1755 2017 GMC Sierra Code - Driver Seat Assembly Forward Switch Circuit

Common Causes of B1755 2017 GMC Sierra

  1. Faulty driver seat assembly forward switch.
  2. Damaged or frayed wiring in the seat adjustment circuit.
  3. Loose connections or poor electrical contact.
  4. Malfunctioning control module that controls the seat adjustment.
  5. Wear and tear over time on the seat adjustment components.

Symptoms of B1755 2017 GMC Sierra

  1. Inability to adjust the driver's seat position forward.
  2. Unresponsive or erratic movement of the driver's seat.
  3. Warning light on the dashboard indicating a seat-related issue.
  4. Strange noises coming from the seat when attempting to adjust it.
  5. Seat position not holding in place after adjustment.

How to Fix B1755 2017 GMC Sierra

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to retrieve the DTC and pinpoint the fault.
  2. Inspect the driver seat assembly forward switch and test its functionality. Replace the switch if it is found to be faulty.
  3. Check the wiring and connections in the seat adjustment circuit for any damage or corrosion. Repair or replace as needed.
  4. Test the control module that controls the seat adjustment to ensure it is functioning properly. Replace if necessary.
  5. Clear the DTC from the vehicle's ECM or BCM after completing the repairs and test the seat adjustment to verify that the issue has been resolved.

Cost to Fix B1755 2017 GMC Sierra

The cost of repairing the B1755 code for the driver seat assembly forward switch circuit can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. Typically, replacing a faulty switch or repairing damaged wiring may cost between $100 to $300, including parts and labor. However, if the control module needs to be replaced, the cost could be higher, ranging from $200 to $500. It's essential to consider additional costs for diagnostic time and any other necessary repairs that may be identified during the inspection process. Overall, the cost estimate for addressing this issue could range from $150 to $500, but it's advisable to consult with a professional technician for a more accurate quote based on the specific circumstances of your GMC Sierra.

Tech Notes for B1755 2017 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 B1755 2017 GMC Sierra Code

1. What does the OBDII code B1755 mean for a 2017 GMC Sierra?

B1755 indicates an issue with the Driver Seat Assembly Forward Switch Circuit, which controls the forward and backward movement of the driver’s seat.

2. What are common symptoms of the B1755 code in a 2017 GMC Sierra?

Symptoms may include the driver’s seat not moving forward or backward, intermittent seat movement, or no response when pressing the seat adjustment switch.

3. What causes the B1755 code to appear?

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

4. How do I diagnose the B1755 code on my GMC Sierra?

Start by checking the seat adjustment switch and inspecting the wiring and connectors for damage. Use a multimeter to test the circuit and verify proper voltage and continuity.

5. Can a blown fuse cause the B1755 code?

Yes, a blown fuse related to the power seat circuit could cause this code. Check the fuse box for any blown fuses and replace them if necessary.

6. How do I fix the B1755 code on a 2017 GMC Sierra?

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

7. Is it safe to drive with the B1755 code active?

Yes, it’s generally safe to drive, but the seat adjustment may be limited or non-functional, which could be inconvenient and affect driving comfort.

8. How much does it cost to fix the B1755 code on a GMC Sierra?

Repair costs vary but can range from $50 to $300 or more, depending on whether you need to replace the switch, wiring, or seat motor.

9. Can I fix the B1755 code myself?

If you’re comfortable with basic electrical diagnostics and repairs, you can inspect and replace the seat switch or repair wiring yourself. Otherwise, seek professional assistance.

10. Will clearing the B1755 code solve the problem?

Clearing the code may temporarily reset it, but the underlying issue must be fixed to prevent the code from returning.

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