C039E GMC Code - Range Actuator Position Sensor Direction Signal 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
- C039E GMC indicates Range Actuator Position Sensor Direction Signal 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 C039E GMC 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 C039E GMC?
- 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 C039E GMC?
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
C039E:07 Range Actuator Position Sensor Direction Signal Circuit High Voltage
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C039E GMC 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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Information for Specific GMC Models
- C039E 2014 GMC Sierra — Range Actuator Position Sensor Direction Signal Circuit
- C039E 2015 GMC Sierra — Range Actuator Position Sensor Direction Signal Circuit
- C039E 2016 GMC Sierra — Range Actuator Position Sensor Direction Signal Circuit
- C039E 2017 GMC Sierra — Range Actuator Position Sensor Direction Signal Circuit
- C039E 2018 GMC Sierra — Range Actuator Position Sensor Direction Signal Circuit
Frequently Asked Questions about C039E GMC Code
1. What are common symptoms of OBDII code C039E GMC (Range Actuator Position Sensor Direction Signal Circuit)?
Symptoms may include erratic shifting, difficulty changing gears, and illuminated warning lights on the dashboard.
2. What could cause the OBDII code C039E GMC to appear?
Possible causes include a faulty range actuator position sensor, damaged wiring or connectors, or issues with the transmission control module.
3. How can I diagnose the Range Actuator Position Sensor Direction Signal Circuit issue?
Diagnosis typically involves using a diagnostic scanner to retrieve the trouble code, inspecting the wiring and connectors for damage, and testing the range actuator position sensor.
4. Can I drive my vehicle with the C039E GMC trouble code?
It is not recommended to drive the vehicle with this code present, as it may lead to further transmission issues and potential safety hazards.
5. How can I repair the Range Actuator Position Sensor Direction Signal Circuit problem?
Repair options may include replacing the range actuator position sensor, repairing damaged wiring or connectors, or reprogramming the transmission control module.
6. Is it possible to reset the OBDII code C039E GMC without fixing the underlying issue?
Clearing the trouble code without addressing the root cause may temporarily turn off the warning light, but the issue will likely reappear once the system detects the fault again.
7. Are there any DIY tips for troubleshooting the C039E GMC code?
DIY enthusiasts can start by checking the transmission fluid level and condition, inspecting the transmission wiring harness for wear, and ensuring proper connections to the range actuator position sensor.
8. How much does it typically cost to repair the Range Actuator Position Sensor Direction Signal Circuit issue?
Costs can vary depending on the specific repair needed, but it is advisable to consult a professional mechanic for an accurate diagnosis and cost estimate.
9. Can a faulty battery or alternator cause the C039E GMC trouble code?
While it is less common, issues with the battery or alternator could potentially impact the electrical system and trigger the range actuator position sensor circuit fault.
10. How long does it take to fix the Range Actuator Position Sensor Direction Signal Circuit problem?
The repair time can vary based on the extent of the issue and the availability of parts, but it is best to consult with a qualified technician for an estimated repair timeline.
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