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B3920 2015 Chevrolet Silverado Code - Seat Motors Group 1 Common Circuit

Quick Answer

The B3920 diagnostic trouble code (DTC) for the 2015 Chevrolet Silverado relates to the Seat Motors Group 1 Common Circuit. Common causes include Faulty seat motor, Wiring issues in the Seat Motors Group 1 Common Circuit, Loose or corroded electrical connections. 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 2015 Chevrolet Silverado indicates Seat Motors Group 1 Common Circuit.
Common causes
Common causes include Faulty seat motor, Wiring issues in the Seat Motors Group 1 Common Circuit, Loose or corroded electrical connections.
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 15, 2024
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Code B3920 2015 Chevrolet Silverado Description

The B3920 diagnostic trouble code (DTC) for the 2015 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 and backward, up and down, and reclining the seat back. When this circuit malfunctions, it can lead to issues with the seat adjustment functionality.

OBDII Code B3920 2015 Chevrolet Silverado - Seat Motors Group 1 Common Circuit
B3920 2015 Chevrolet Silverado Code - Seat Motors Group 1 Common Circuit

Common Causes of B3920 2015 Chevrolet Silverado

  1. Faulty seat motor.
  2. Wiring issues in the Seat Motors Group 1 Common Circuit.
  3. Loose or corroded electrical connections.
  4. Defective seat control module.
  5. Water damage to the seat motors or wiring.

Symptoms of B3920 2015 Chevrolet Silverado

  1. Inability to adjust the seat position.
  2. Seat moving in only one direction or getting stuck.
  3. Unusual noises coming from the seat motors.
  4. Seat not reclining or reclining too far back.
  5. Seat adjustment controls not responding.

How to Fix B3920 2015 Chevrolet Silverado

  1. Begin by conducting a thorough inspection of the seat motors, wiring, and electrical connections to identify any visible damage or issues.
  2. Use a multimeter to test the continuity of the Seat Motors Group 1 Common Circuit to pinpoint any electrical faults.
  3. Replace any faulty seat motors, damaged wiring, or corroded connections as needed.
  4. Clear the DTC from the vehicle's onboard computer using a diagnostic scan tool.
  5. Test the seat adjustment functionality to ensure that the issue has been resolved.

Cost to Fix B3920 2015 Chevrolet Silverado

The typical repair costs for addressing the B3920 DTC on a 2015 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, the cost of replacing a faulty seat motor or repairing wiring and electrical connections can range from $150 to $500. Additional costs may include diagnostic fees, parts, and labor. It's important to note that labor rates at auto repair shops can vary widely, typically ranging from $80 to $150 per hour. For a more accurate estimate, it's recommended to consult with a local auto repair shop.

What does this mean?

Tech Notes for B3920 2015 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 2015 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code B3920 in a 2015 Chevrolet Silverado related to the Seat Motors Group 1 Common Circuit?

The common symptoms may include non-functional seat motors, inability to adjust seat positions, or erratic seat movements.

2. What are the possible causes of OBDII code B3920 in a 2015 Chevrolet Silverado related to the Seat Motors Group 1 Common Circuit?

Possible causes may include a faulty seat motor, damaged wiring harness, loose or corroded connectors, or a malfunctioning control module.

3. How can I diagnose the issue causing OBDII code B3920 in my 2015 Chevrolet Silverado related to the Seat Motors Group 1 Common Circuit?

You can use a diagnostic scanner to retrieve the trouble code, inspect the seat motors and wiring for any visible damage, and perform a continuity test on the circuit.

4. What are some repair tips for addressing OBDII code B3920 in a 2015 Chevrolet Silverado related to the Seat Motors Group 1 Common Circuit?

Repair tips may include repairing or replacing damaged wiring, securing loose connectors, replacing a faulty seat motor, or reprogramming the control module if necessary.

5. Can I reset the OBDII code B3920 in my 2015 Chevrolet Silverado related to the Seat Motors Group 1 Common Circuit without fixing the underlying issue?

Resetting the code without addressing the underlying problem may temporarily turn off the check engine light, but the issue will likely persist and trigger the code again.

6. Is it safe to continue driving my 2015 Chevrolet Silverado with OBDII code B3920 related to the Seat Motors Group 1 Common Circuit?

It is not recommended to drive the vehicle with unresolved OBDII code B3920, as it may affect the functionality of the seat motors and compromise the driver's comfort and safety.

7. How much does it typically cost to repair OBDII code B3920 in a 2015 Chevrolet Silverado related to the Seat Motors Group 1 Common Circuit?

The cost of repair can vary depending on the exact cause of the issue, but it may involve labor charges for diagnosis and repair, as well as the cost of any replacement parts needed.

8. Can a DIY enthusiast fix OBDII code B3920 in a 2015 Chevrolet Silverado related to the Seat Motors Group 1 Common Circuit?

While some basic troubleshooting and repairs can be done by a DIY enthusiast, diagnosing and fixing complex electrical issues like this code may require professional expertise and specialized tools.

9. Will OBDII code B3920 in my 2015 Chevrolet Silverado reset on its own after a certain number of driving cycles?

In some cases, if the underlying issue causing the code is resolved, the vehicle's computer may clear the code after a certain number of successful driving cycles without detecting the problem.

10. How can I prevent OBDII code B3920 from recurring in my 2015 Chevrolet Silverado related to the Seat Motors Group 1 Common Circuit?

Regularly inspecting the seat motors, wiring, and connectors for damage, ensuring proper maintenance of the vehicle's electrical system, and addressing any issues promptly can help prevent the recurrence of this code.

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