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C0379 2017 Chevrolet Silverado Code - Front Axle Switch Circuit

Quick Answer

The C0379 diagnostic trouble code (DTC) on a 2017 Chevrolet Silverado indicates a problem with the front axle switch circuit. Common causes include Faulty front axle switch, Damaged or corroded wiring connections, Defective 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
C0379 2017 Chevrolet Silverado indicates Front Axle Switch Circuit.
Common causes
Common causes include Faulty front axle switch, Damaged or corroded wiring connections, Defective 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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code C0379 2017 Chevrolet Silverado Description

The C0379 diagnostic trouble code (DTC) on a 2017 Chevrolet Silverado indicates a problem with the front axle switch circuit. This code specifically relates to the electronic system that controls the engagement and disengagement of the front axle in a four-wheel-drive (4WD) system. The front axle switch circuit is responsible for sending signals to the vehicle's control module to engage or disengage the front axle as needed for optimal traction and stability.

OBDII Code C0379 2017 Chevrolet Silverado - Front Axle Switch Circuit
C0379 2017 Chevrolet Silverado Code - Front Axle Switch Circuit

Common Causes of C0379 2017 Chevrolet Silverado

  1. Faulty front axle switch
  2. Damaged or corroded wiring connections
  3. Defective control module
  4. Water or debris intrusion into the front axle components
  5. Electrical issues such as short circuits or blown fuses

Symptoms of C0379 2017 Chevrolet Silverado

  1. Difficulty engaging or disengaging 4WD mode
  2. Illumination of the 4WD indicator light on the dashboard
  3. Unusual noises coming from the front axle area
  4. Limited traction or slipping while driving in poor road conditions
  5. Reduced fuel efficiency due to constant engagement of the front axle

How to Fix C0379 2017 Chevrolet Silverado

  1. Diagnose the exact cause of the C0379 code using a scan tool to pinpoint the faulty component.
  2. Inspect the front axle switch, wiring harness, and control module for any visible damage or corrosion.
  3. Replace the front axle switch if it is found to be defective.
  4. Repair or replace any damaged wiring connections.
  5. Reset the vehicle's control module and clear the DTC to ensure proper operation of the 4WD system.

Cost to Fix C0379 2017 Chevrolet Silverado

The cost of repairing the front axle switch circuit issue can vary depending on the specific cause of the problem and the labor rates at the auto repair shop. Typically, the parts for this repair may range from $100 to $300, while the labor costs can add another $100 to $200 to the total bill. Overall, the total repair cost for addressing the C0379 code on a 2017 Chevrolet Silverado may fall within the range of $200 to $500. It's essential to consult with a qualified mechanic or dealership to get an accurate estimate based on your location and the extent of the repair needed.

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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 C0379 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code C0379 in a 2017 Chevrolet Silverado?

The common symptoms of OBDII code C0379 include issues with engaging or disengaging the front axle, erratic behavior in the four-wheel-drive system, and a malfunction indicator light (MIL) on the dashboard.

2. What can cause OBDII code C0379 in a 2017 Chevrolet Silverado?

The Front Axle Switch Circuit code C0379 in a 2017 Chevrolet Silverado is often caused by a faulty front axle switch, damaged wiring or connectors, a malfunctioning transfer case control module, or issues with the front axle actuator.

3. How can I diagnose the Front Axle Switch Circuit issue in my 2017 Chevrolet Silverado?

Diagnosing OBDII code C0379 involves using a scan tool to retrieve the trouble codes, checking the front axle switch for proper operation, inspecting wiring and connectors for damage, and testing the front axle actuator and transfer case control module.

4. Can I continue driving my 2017 Chevrolet Silverado with OBDII code C0379?

It is not recommended to continue driving your 2017 Chevrolet Silverado with OBDII code C0379, as it can lead to potential issues with the four-wheel-drive system and cause further damage if left unresolved.

5. How can I repair OBDII code C0379 in my 2017 Chevrolet Silverado?

Repairing OBDII code C0379 in a 2017 Chevrolet Silverado involves replacing the front axle switch if faulty, repairing or replacing damaged wiring and connectors, addressing issues with the front axle actuator or transfer case control module as needed.

6. Are there any DIY tips for fixing OBDII code C0379 in a 2017 Chevrolet Silverado?

While some basic diagnostics like checking for loose connections or damaged wires can be done by DIY enthusiasts, it is recommended to consult a professional mechanic for a proper diagnosis and repair of OBDII code C0379 in a 2017 Chevrolet Silverado.

7. Will resetting the trouble codes clear OBDII code C0379 in my 2017 Chevrolet Silverado?

Resetting the trouble codes may temporarily clear OBDII code C0379 in a 2017 Chevrolet Silverado, but if the underlying issue causing the fault code is not fixed, the code is likely to reappear once the system detects the problem again.

8. How much does it cost to repair OBDII code C0379 in a 2017 Chevrolet Silverado?

The cost of repairing OBDII code C0379 in a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue, parts needed for replacement, and labor costs. It is advisable to get a quote from a trusted mechanic.

9. Can extreme weather conditions affect OBDII code C0379 in a 2017 Chevrolet Silverado?

Extreme weather conditions like cold temperatures or moisture can potentially exacerbate issues related to the Front Axle Switch Circuit and trigger OBDII code C0379 in a 2017 Chevrolet Silverado.

10. Is OBDII code C0379 a common problem in 2017 Chevrolet Silverado vehicles?

While not extremely common, OBDII code C0379 related to the Front Axle Switch Circuit can occur in 2017 Chevrolet Silverado vehicles, especially as they age or if there are underlying electrical or mechanical issues within the four-wheel-drive system.

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