B3920 2015 GMC Sierra Code - Seat Motors Group 1 Common Circuit
Quick Answer
The B3920 diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Seat Motors Group 1 Common Circuit. Common causes include Damaged wiring or connectors, Faulty seat motors, Malfunctioning 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
- B3920 2015 GMC Sierra indicates Seat Motors Group 1 Common Circuit.
- Common causes
- Common causes include Damaged wiring or connectors, Faulty seat motors, Malfunctioning 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.
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Code B3920 2015 GMC Sierra Description
The B3920 diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Seat Motors Group 1 Common Circuit. This code indicates a problem with the common circuit for 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 them. When this common circuit malfunctions, it can lead to issues with the seat motor functionality, affecting the comfort and convenience of the vehicle.
Common Causes of B3920 2015 GMC Sierra
- Damaged wiring or connectors
- Faulty seat motors
- Malfunctioning control module
- Corrosion in the electrical system
- Wear and tear from normal use
Symptoms of B3920 2015 GMC Sierra
- Inability to adjust seat position
- Seat motors working intermittently
- Unusual noises coming from the seat when adjusting
- Seat getting stuck in one position
- Warning light on the dashboard related to seat motors
How to Fix B3920 2015 GMC Sierra
- Diagnose the issue by performing a thorough inspection of the seat motors, wiring, and control module.
- Repair or replace any damaged wiring or connectors.
- Test the seat motors and control module for proper functionality.
- Replace any faulty components, such as seat motors or the control module.
- Clear the diagnostic trouble code and test the seat motors to ensure they are working correctly.
Cost to Fix B3920 2015 GMC Sierra
The cost of repairing the Seat Motors Group 1 Common Circuit issue can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the repair costs for this type of issue can range from $200 to $500, including parts and labor. It's important to note that the actual cost may be higher or lower based on the severity of the problem and the rates charged by the auto repair shop. Diagnostic time and labor rates can vary, so it's recommended to obtain a detailed estimate from a qualified technician before proceeding with the repair.
Tech Notes for B3920 2015 GMC Sierra
B3920 02 Group 1 Seat Motors Circuit Shorted to Ground
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Frequently Asked Questions about B3920 2015 GMC Sierra Code
1. What does the OBDII code B3920 mean on a 2015 GMC Sierra?
The B3920 code indicates an issue with the Seat Motors Group 1 Common Circuit, often related to a malfunction in the power seat motor or its wiring.
2. What are common symptoms of the B3920 code in a GMC Sierra?
Symptoms may include the power seat not moving in one or more directions, intermittent seat movement, or a complete failure of the seat adjustment system.
3. What causes the B3920 code to appear?
Common causes include faulty seat motor wiring, a damaged seat motor, a blown fuse, or a malfunctioning seat control module.
4. How can I diagnose the B3920 code on my 2015 GMC Sierra?
Start by inspecting the seat motor wiring and connectors for damage or corrosion. Use a scan tool to check for related codes and test the seat motor’s functionality.
5. Can a blown fuse trigger the B3920 code?
Yes, a blown fuse in the seat motor circuit can disrupt power and cause the B3920 code to be set.
6. Is it safe to drive with the B3920 code active?
Yes, the vehicle is still safe to drive, but the power seat adjustment may not work, which could affect comfort and driving ergonomics.
7. How do I fix the B3920 code on my GMC Sierra?
Repairs may involve replacing damaged wiring, cleaning corroded connections, replacing the seat motor, or reprogramming/updating the seat control module.
8. How much does it cost to fix the B3920 code on a 2015 GMC Sierra?
Repair costs vary depending on the issue, but replacing a seat motor typically costs between $200 and $500, while wiring repairs may cost less.
9. Can I clear the B3920 code without fixing the problem?
You can clear the code using an OBDII scanner, but it will likely return unless the underlying issue is resolved.
10. Do I need a professional mechanic to fix the B3920 code?
While basic inspections can be done at home, complex repairs like motor replacement or module programming may require professional assistance.
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