Engine-CodesGMC – B1745 GMC

B1745 GMC Code - Driver Seat Rear Up Switch Circuit

Quick Answer

The B1745 GMC code relates to an issue with the driver seat rear up switch circuit in the vehicle. Common causes include Faulty driver seat rear up switch, Damaged wiring or connectors in the circuit, Issues with the 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
B1745 GMC indicates Driver Seat Rear Up Switch Circuit.
Common causes
Common causes include Faulty driver seat rear up switch, Damaged wiring or connectors in the circuit, Issues with the 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.
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B1745 GMC Description

The B1745 GMC code relates to an issue with the driver seat rear up switch circuit in the vehicle. This code indicates that there is a malfunction or fault in the circuit that controls the movement of the driver's seat to raise the rear portion. The driver seat rear up switch circuit is responsible for sending signals to the seat control module to adjust the seat position. When this circuit is compromised, it can lead to issues with adjusting the seat, affecting the driver's comfort and potentially safety while driving.

OBDII Code B1745 GMC - Driver Seat Rear Up Switch Circuit
B1745 GMC Code - Driver Seat Rear Up Switch Circuit

Common Causes of B1745 GMC

  1. Faulty driver seat rear up switch.
  2. Damaged wiring or connectors in the circuit.
  3. Issues with the seat control module.
  4. Electrical problems such as short circuits or open circuits in the system.
  5. Wear and tear over time causing degradation of components.

Symptoms of B1745 GMC

  1. Inability to adjust the rear portion of the driver's seat upwards.
  2. Unresponsive or erratic movement of the driver's seat when trying to adjust the rear portion.
  3. Malfunctioning seat memory settings related to the rear up position.
  4. Illumination of the seat adjustment warning light on the dashboard.

How to Fix B1745 GMC

  1. Begin by diagnosing the specific cause of the issue using a diagnostic scanner to retrieve the B1745 GMC code.
  2. Inspect the driver seat rear up switch for any visible damage or malfunction and replace if necessary.
  3. Check the wiring and connectors in the circuit for any signs of wear, corrosion, or damage, repairing or replacing as needed.
  4. Test the seat control module to ensure it is functioning correctly and replace if found to be faulty.
  5. Clear the diagnostic trouble codes after completing the repair to reset the system and ensure the issue has been resolved.

Cost to Fix B1745 GMC

The typical repair costs for addressing the B1745 GMC code related to the driver seat rear up switch circuit can vary depending on the specific cause of the issue. On average, the parts required for this repair could range from $50 to $200, while the labor costs may be between $100 and $300. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to check with local shops for a more accurate estimate based on your vehicle make and model.

Tech Notes for B1745 GMC









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Information for Specific GMC Models

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 B1745 GMC Code

What does the OBDII code B1745 indicate for my GMC vehicle?

The B1745 code indicates a malfunction in the driver seat rear up switch circuit, which may affect the functioning of the seat adjustment feature.

What are common symptoms associated with the B1745 code?

Common symptoms include the driver seat not moving up or down, intermittent movement issues, or the seat adjustment switch not responding at all.

What could cause the B1745 code to trigger?

Possible causes include a faulty driver seat rear up switch, damaged wiring or connectors in the circuit, or a malfunctioning power seat control module.

How can I diagnose the issue related to code B1745?

Start by inspecting the driver seat rear up switch for physical damage, check the wiring and connectors for continuity, and test the power seat control module for proper operation.

What is the first step in repairing the B1745 code?

The first step is to visually inspect the driver seat rear up switch and its wiring for any signs of wear, damage, or corrosion that may be affecting the circuit.

Can I clear the B1745 code without fixing the issue?

While you can clear the code, it is not recommended as the underlying issue will likely cause the code to reappear and may lead to further seat adjustment problems.

How much does it typically cost to fix the issue related to B1745?

Repair costs can vary widely, but you might expect to pay between $100 to $500, depending on whether the switch, wiring, or control module needs to be replaced.

Is it safe to drive my GMC with the B1745 code present?

While it is generally safe to drive, the inability to adjust the driver's seat could lead to an improper driving position, which may affect comfort and safety.

Can I fix the B1745 code myself, or should I go to a professional?

If you have experience with automotive electrical systems, you may be able to diagnose and repair the issue yourself. Otherwise, it's best to consult a professional mechanic.

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