C0379 2015 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 2015 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.
Code C0379 2015 Chevrolet Silverado Description
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.
What are the Possible Causes of the DTC C0379 2015 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 2015 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 2015 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.
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Frequently Asked Questions about C0379 2015 Chevrolet Silverado Code
1. What does the OBDII code C0379 mean on a 2015 Chevrolet Silverado?
C0379 refers to a fault in the Front Axle Switch Circuit, indicating an issue with the system that controls engagement of the front axle in four-wheel-drive (4WD) modes.
2. What are the common symptoms of the C0379 code on a Chevy Silverado?
Common symptoms include the 4WD system failing to engage or disengage, a Service 4WD message on the dashboard, or illuminated warning lights.
3. What causes the C0379 code to appear on a 2015 Silverado?
Potential causes include a faulty front axle actuator, damaged wiring or connectors in the front axle switch circuit, or a malfunctioning transfer case control module (TCCM).
4. Can I still drive my 2015 Chevrolet Silverado with the C0379 code?
While you can typically still drive the vehicle, the 4WD system may not function as intended, which can impact performance in off-road or slippery conditions.
5. How do I diagnose the C0379 code on my Silverado?
Diagnosis involves checking for damaged wiring or connectors in the front axle circuit, testing the front axle actuator for proper operation, and scanning the TCCM for additional fault codes.
6. What is the role of the front axle actuator in the C0379 code?
The front axle actuator engages or disengages the front axle for 4WD operation. A malfunctioning actuator can trigger the C0379 code.
7. How do I fix the C0379 code on my 2015 Chevrolet Silverado?
Repairs may include replacing the front axle actuator, repairing damaged wiring or connectors, or reprogramming or replacing the TCCM if necessary.
8. Is the C0379 code specific to 4WD-equipped Silverados?
Yes, this code is specific to vehicles equipped with a 4WD system, as it relates to the front axle engagement mechanism.
9. How much does it cost to repair the C0379 code on a Chevy Silverado?
Repair costs vary depending on the issue but can range from $150 to $500, primarily for replacing the front axle actuator or repairing wiring.
10. Can a software update resolve the C0379 code on a 2015 Silverado?
In some cases, a software update for the TCCM may resolve the issue if the fault is related to a programming error.
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