B3920 2014 Chevrolet Silverado Code - Seat Motors Group 1 Common Circuit
Quick Answer
The Seat Memory Control Module controls the seat, lumbar, and adjustable pedal motors via half bridges that are connected to power rails internal to the module. Common causes include Faulty Seat, Lumbar, or Adjustable Pedal Motors, Seat, Lumbar, or Adjustable Pedal Motors harness is open or shorted, Seat, Lumbar, or Adjustable Pedal Motors circuit poor electrical connection. 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 2014 Chevrolet Silverado indicates Seat Motors Group 1 Common Circuit.
- Common causes
- Common causes include Faulty Seat, Lumbar, or Adjustable Pedal Motors, Seat, Lumbar, or Adjustable Pedal Motors harness is open or shorted, Seat, Lumbar, or Adjustable Pedal Motors circuit poor electrical connection.
- 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.
Code B3920 2014 Chevrolet Silverado Description
When a power seat, lumbar, or adjustable pedal switch is pressed or when a memory recall is requested, each seat motor receives battery voltage and ground from the seat memory control module via the motor control circuits. All motors are reversible, so the direction the motor rotates depends on which control circuit voltage is applied and which control circuit ground is applied. When the switch is operated in the opposite direction, the module reverses the polarity and applies voltage and ground to the opposite circuits to move the seat in the opposite direction.
The Diagnostic Trouble Code (DTC) sets when the voltage on any power rail 1 motor control circuit exceeds 2.78 volts for 100 ms or is below 1.47 volts for 100 ms.
What are the Possible Causes of the DTC B3920 2014 Chevrolet Silverado?
- Faulty Seat, Lumbar, or Adjustable Pedal Motors
- Seat, Lumbar, or Adjustable Pedal Motors harness is open or shorted
- Seat, Lumbar, or Adjustable Pedal Motors circuit poor electrical connection
- Faulty Seat Memory Control Module
How to Fix the DTC B3920 2014 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
B3920 02 Group 1 Seat Motors Circuit Shorted to Ground
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B3920 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the B3920 2014 Chevrolet Silverado code?
Need more information on how to fix the B3920 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B3920 2014 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B3920 2014 Chevrolet Silverado Code
Q: What does OBDII code B3920 mean for a 2014 Chevrolet Silverado?
A: Code B3920 indicates an issue with the Seat Motors Group 1 Common Circuit, which controls the motor functions for the driver or passenger seat.
Q: What are the common symptoms of code B3920 in a 2014 Chevrolet Silverado?
A: Symptoms may include non-functioning seat adjustments, unusual seat motor noises, or intermittent operation of seat controls.
Q: What causes code B3920 in the 2014 Chevrolet Silverado?
A: Common causes include faulty wiring or connectors in the seat motor circuit, a defective seat motor, or issues with the seat control module.
Q: How can I diagnose code B3920 in a 2014 Chevrolet Silverado?
A: Use a diagnostic scanner to confirm the code, then inspect the wiring, connectors, and seat motor for damage or loose connections.
Q: Can code B3920 affect other vehicle systems?
A: This code is specific to seat motor functions, but a short or open circuit could potentially cause electrical issues in related systems.
Q: How do you fix code B3920 in a 2014 Chevrolet Silverado?
A: Repairs may involve replacing damaged wiring, connectors, or the seat motor, and possibly reprogramming the seat control module.
Q: Is it safe to drive with code B3920 in a 2014 Chevrolet Silverado?
A: Yes, the code typically doesn’t affect drivability, but seat adjustment functionality may be compromised.
Q: How much does it cost to repair code B3920 in a 2014 Chevrolet Silverado?
A: Repair costs vary but may range from $100 to $500 depending on whether wiring, connectors, or the seat motor needs replacement.
Q: Can clearing the code B3920 fix the issue in a 2014 Chevrolet Silverado?
A: Clearing the code may temporarily remove the error, but the underlying issue must be repaired to prevent the code from returning.
Q: Does code B3920 require professional repair for a 2014 Chevrolet Silverado?
A: While some issues like inspecting wiring can be done at home, complex repairs such as replacing the seat motor or control module may require professional help.
Discuss the causes and fixes for B3920 2014 Chevrolet Silverado OBDII Code
Code B3920 2014 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
