Engine-CodesChevrolet – B3920 2017 Chevrolet Silverado

B3920 2017 Chevrolet Silverado Code - Seat Motors Group 1 Common Circuit

Quick Answer

The B3920 diagnostic trouble code (DTC) for the 2017 Chevrolet Silverado relates to the Seat Motors Group 1 Common Circuit. Common causes include Damaged wiring or connectors in the seat motor circuit, Faulty seat motor components, Blown fuse related to the seat motors. 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
B3920 2017 Chevrolet Silverado indicates Seat Motors Group 1 Common Circuit.
Common causes
Common causes include Damaged wiring or connectors in the seat motor circuit, Faulty seat motor components, Blown fuse related to the seat motors.
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 16, 2024
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Code B3920 2017 Chevrolet Silverado Description

The B3920 diagnostic trouble code (DTC) for the 2017 Chevrolet Silverado relates to the Seat Motors Group 1 Common Circuit. This code indicates a problem with the electrical circuit that controls the seat motors in the vehicle. The seat motors are responsible for adjusting the position of the seats, including moving them forward, backward, up, down, and reclining. When this circuit malfunctions, it can lead to issues with the seat adjustment functionality.

OBDII Code B3920 2017 Chevrolet Silverado - Seat Motors Group 1 Common Circuit
B3920 2017 Chevrolet Silverado Code - Seat Motors Group 1 Common Circuit

Common Causes of B3920 2017 Chevrolet Silverado

  1. Damaged wiring or connectors in the seat motor circuit
  2. Faulty seat motor components
  3. Blown fuse related to the seat motors
  4. Malfunctioning seat control module
  5. Water damage or corrosion in the seat motor circuit

Symptoms of B3920 2017 Chevrolet Silverado

  1. Inability to adjust the seat position
  2. Seat moving in the wrong direction
  3. Seat getting stuck in one position
  4. Unusual noises coming from the seat when adjusting
  5. Seat adjustment controls not responding

How to Fix B3920 2017 Chevrolet Silverado

  1. Begin by conducting a visual inspection of the seat motor circuit, looking for any visible damage to wiring or connectors.
  2. Use a multimeter to test the continuity of the circuit and check for any shorts or open circuits.
  3. Inspect the seat motor components for any signs of damage or wear, and replace any faulty parts.
  4. Check and replace any blown fuses related to the seat motors.
  5. If necessary, reprogram or replace the seat control module to address any issues with its functionality.

Cost to Fix B3920 2017 Chevrolet Silverado

The cost of repairing the Seat Motors Group 1 Common Circuit issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total cost of addressing this issue could be anywhere from $150 to $500. It's important to note that these are rough estimates, and actual costs may differ based on factors such as location, labor rates, and the availability of parts. It's recommended to consult with a professional mechanic to get an accurate cost estimate for your specific situation.

Tech Notes for B3920 2017 Chevrolet Silverado

B3920 01 Group 1 Seat Motors Circuit Shorted to Battery or Open

B3920 02 Group 1 Seat Motors Circuit Shorted to Ground

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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 B3920 2017 Chevrolet Silverado Code

1. What does the OBDII code B3920 mean on a 2017 Chevrolet Silverado?

The code B3920 indicates an issue with the Seat Motors Group 1 Common Circuit, often related to the wiring or components controlling seat motor functionality.

2. What are the common symptoms of the B3920 code in a 2017 Silverado?

Common symptoms include the driver's or passenger's seat not adjusting, limited seat movement, or unresponsive seat controls.

3. What causes the B3920 code in a Chevrolet Silverado?

This code can be caused by faulty seat motors, damaged wiring, loose or corroded connectors, or a malfunctioning seat control module.

4. Can a blown fuse trigger the B3920 code?

Yes, a blown fuse in the seat motor circuit can cause this code to appear by interrupting power to the seat adjustment system.

5. How can I diagnose the B3920 code on my Silverado?

Diagnose the code by visually inspecting the wiring and connectors for damage, checking for blown fuses, and using a scan tool to test the seat control module and motor circuits.

6. Is the B3920 code a serious issue?

While not critical to vehicle operation, it can be inconvenient as it affects seat adjustability and may indicate electrical problems that could worsen if not addressed.

7. How do I fix the B3920 code in my 2017 Silverado?

Repairs may include replacing faulty seat motors, repairing or replacing damaged wiring or connectors, and resetting the seat control module if necessary.

8. Can I still drive my Silverado with the B3920 code?

Yes, the truck can still be driven, but seat adjustment features may not work properly, which could impact comfort or safety.

9. Will clearing the code fix the problem permanently?

Clearing the code without addressing the root cause will not fix the issue; the code will likely reappear until repairs are made.

10. Should I take my Silverado to a mechanic for a B3920 code?

If you’re not comfortable diagnosing electrical systems, it’s best to take your vehicle to a qualified mechanic to identify and fix the issue.

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