AutoCodes – Chevrolet – C0379 2017 Chevrolet Silverado

C0379 2017 Chevrolet Silverado Code - Front Axle Switch Circuit

Quick Answer

The front axle control circuit consists of an electric motor actuator that engages and disengages the front axle. Common causes include Faulty Front Axle Engagement Actuator, Front Axle Engagement Actuator harness is open or shorted, Front Axle Engagement Actuator 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: C0379 2017 Chevrolet Silverado indicates Front Axle Switch Circuit.
Common causes: Common causes include Faulty Front Axle Engagement Actuator, Front Axle Engagement Actuator harness is open or shorted, Front Axle Engagement Actuator 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.

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Code Popularity 299

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 11, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0379 2017 Chevrolet Silverado Description

The front axle control circuit consists of an electric motor actuator that engages and disengages the front axle. The front axle engagement actuator consists of a permanent magnetic motor, a worm gear-controlled plunger, a front axle switch, and an electronic control circuit within the actuator assembly.
The front axle engagement actuator contains the following circuits: A Run/Crank Ignition 1 Voltage circuit, a Four-Wheel Drive Wheel Lock Indicator circuit, a Front Axle Actuator Control circuit, and a ground circuit.
When a shift to 4WD Auto, 4WD High, or 4WD Low is requested, the Transfer Case Control Module engages the front axle by grounding the front axle actuator control circuit through a current limiting driver.
This Diagnostic Trouble Code (DTC) will be set when a short to ground, short to voltage, or open circuit is detected.

OBDII Code C0379 2017 Chevrolet Silverado - Front Axle Switch Circuit - AutoCodes.com — C0379 2017 Chevrolet Silverado Code - Front Axle Switch Circuit

What does this mean?

What are the Possible Causes of the DTC C0379 2017 Chevrolet Silverado?

Faulty Front Axle Engagement Actuator
Front Axle Engagement Actuator harness is open or shorted
Front Axle Engagement Actuator circuit poor electrical connection
Faulty Transfer Case Control Module

How to Fix the DTC C0379 2017 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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0379 2017 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 C0379 2017 Chevrolet Silverado code?

Need more information on how to fix the C0379 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0379 2017 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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.