C0396 2018 GMC Sierra Code - Range Actuator Position Sensor Circuit
Quick Answer
The Transfer Case Control Module receives input from the range actuator position sensor and the transfer case range position sensor. 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
- C0396 2018 GMC Sierra indicates Range Actuator Position Sensor Circuit.
- 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 C0396 2018 GMC Sierra Description
The range actuator position sensor receives an 8-volt reference signal from the Transfer Case Control Module. In return, the range actuator position sensor sends the Transfer Case Control Module a variable pulse width modulated signal indicating the position of the transfer case and a range actuator position direction signal. The range actuator position sensor, inside the A16 transfer case motor, also known as the transfer case range actuator, works in conjunction with the range position sensor to confirm the transfer case position. The range actuator position sensor is more sensitive than the transfer case range position sensor and is able to indicate to the Transfer Case Control Module the exact position of the transfer case between range changes. It is also able to show how much clutch activation is being commanded at any time.
The transfer case range position sensor, also known as the transfer case two/four-wheel drive actuator position sensor, receives a 5-volt reference signal from the Transfer Case Control Module and sends back a continuously variable pulse width modulated signal to the Transfer Case Control Module. This continuously variable signal indicates the position of the transfer case actuator.
The range actuator position sensor is more sensitive than the transfer case range position sensor but needs to reference the transfer case range position sensor value at ignition ON and mode changes. The transfer case range position sensor is an absolute sensor. The Transfer Case Control Module synchronizes the range actuator position sensor with the transfer case range position sensor at ignition ON and mode changes.
The range actuator position sensor is an integral part of the A16 Transfer Case Motor and cannot be replaced independently.
The transfer case range position sensor, also known as the gear position sensor, is an independently replaceable part.
What are the Possible Causes of the DTC C0396 2018 GMC Sierra?
- 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 C0396 2018 GMC Sierra?
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
C0396:07 Range Actuator Position Sensor Circuit High Voltage
C0396:08 Range Actuator Position Sensor Circuit Performance Signal Invalid
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C0396 2018 GMC Sierra 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 C0396 2018 GMC Sierra code?
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Frequently Asked Questions about C0396 2018 GMC Sierra Code
1. What are common symptoms of OBDII code C0396 in a 2018 GMC Sierra?
Common symptoms include erratic shifting, inability to shift gears, illuminated check engine light, and reduced vehicle performance.
2. What does the Range Actuator Position Sensor Circuit do in a 2018 GMC Sierra?
The Range Actuator Position Sensor Circuit is responsible for monitoring the position of the transmission range actuator to ensure proper gear selection and shifting.
3. What are possible causes of OBDII code C0396 in a 2018 GMC Sierra?
Possible causes include a faulty range actuator position sensor, damaged wiring or connectors in the circuit, issues with the transmission control module, or a malfunctioning transmission range actuator.
4. How can I diagnose OBDII code C0396 in my 2018 GMC Sierra?
Diagnosis involves using a scan tool to retrieve the trouble code, inspecting the wiring and connectors in the range actuator position sensor circuit, testing the sensor's resistance, and checking for proper voltage and ground connections.
5. Can I continue driving my 2018 GMC Sierra with OBDII code C0396?
It is not recommended to continue driving the vehicle with this code present, as it can lead to further transmission issues and potentially cause damage to other components.
6. How can I repair OBDII code C0396 in my 2018 GMC Sierra?
Repair options include replacing the faulty range actuator position sensor, repairing or replacing damaged wiring or connectors, addressing issues with the transmission control module, or replacing the transmission range actuator if necessary.
7. Is it possible to reset OBDII code C0396 in a 2018 GMC Sierra without fixing the underlying issue?
While you can clear the trouble code using a scan tool, it will likely return if the root cause of the problem is not addressed. It is important to diagnose and repair the issue to prevent further complications.
8. Are there any DIY repair tips for fixing OBDII code C0396 in a 2018 GMC Sierra?
DIY enthusiasts can attempt to inspect and clean the wiring and connectors in the range actuator position sensor circuit, but for more complex issues like sensor or actuator replacement, it is recommended to seek professional help.
9. How much does it typically cost to fix OBDII code C0396 in a 2018 GMC Sierra?
The cost of repairs can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
10. Can a mechanic help me with diagnosing and repairing OBDII code C0396 in my 2018 GMC Sierra?
Yes, a qualified mechanic with experience in diagnosing and repairing transmission-related issues can help identify the root cause of the problem and perform the necessary repairs to resolve OBDII code C0396 in your GMC Sierra.
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