C0397 2018 Chevrolet Silverado Code - Transfer Case Clutch
Quick Answer
In 4WD/AWD Automatic range, the Transfer Case Control Module monitors the front and rear wheel speed sensors for slip. Common causes include Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator), Transfer Case Motor harness is open or shorted, Transfer Case Motor 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
- C0397 2018 Chevrolet Silverado indicates Transfer Case Clutch.
- Common causes
- Common causes include Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator), Transfer Case Motor harness is open or shorted, Transfer Case Motor 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 C0397 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC C0397 2018 Chevrolet Silverado?
- Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator)
- Transfer Case Motor harness is open or shorted
- Transfer Case Motor circuit poor electrical connection
- Faulty Transfer Case Control Module
How to Fix the DTC C0397 2018 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
C0397:58 Transfer Case Clutch Performance
C0397:4B (if equipped) Transfer Case Clutch Calibration Not Learned
C0397:F3 Transfer Case Clutch Worn Out Clutch
C0397:F4 Transfer Case Range Position Sensor Over Travel
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C0397 2018 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 C0397 2018 Chevrolet Silverado Code
1. What does the OBDII code C0397 mean on a 2018 Chevrolet Silverado?
C0397 indicates an issue with the transfer case clutch, specifically relating to an electrical or mechanical fault in the transfer case clutch system.
2. What are the common symptoms of a C0397 code?
Common symptoms include the "Service 4WD" message on the dashboard, inability to shift into or out of 4WD modes, unusual noises from the transfer case, or reduced traction in certain driving conditions.
3. What causes the C0397 code to appear on a Chevrolet Silverado?
Potential causes include a faulty transfer case clutch motor, damaged wiring or electrical connectors, low transfer case fluid, or mechanical wear in the transfer case clutch assembly.
4. Is it safe to drive with a C0397 code?
While the Silverado may still be drivable, the 4WD system may be compromised, which could affect traction and handling in certain conditions. It’s best to address the issue promptly.
5. How can I diagnose a C0397 code?
Diagnosis involves scanning the vehicle with an OBDII scanner, inspecting the transfer case clutch motor and wiring for damage, checking for proper electrical connections, and verifying the transfer case fluid level.
6. Can low transfer case fluid trigger a C0397 code?
Yes, low or contaminated transfer case fluid can cause mechanical issues in the clutch assembly, leading to the C0397 code.
7. How do you fix a C0397 code on a 2018 Chevrolet Silverado?
Repairs may include replacing the transfer case clutch motor, repairing damaged wiring or connectors, topping off or replacing the transfer case fluid, or replacing worn components in the transfer case.
8. How much does it cost to repair a C0397 code?
Repair costs vary depending on the issue but can range from $150 for minor wiring repairs to over $1,000 for transfer case clutch motor replacement or extensive mechanical repairs.
9. Can a software update fix the C0397 code?
In rare cases, a software update for the transfer case control module (TCCM) may resolve the issue, but this is less common compared to physical repairs.
10. How can I prevent the C0397 code from occurring again?
Regular maintenance, including checking transfer case fluid levels, inspecting wiring and connectors, and addressing 4WD system issues promptly, can help prevent the C0397 code from recurring.
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