C0398 2017 GMC Sierra Code - Range Actuator Position - Range Position Correlation
Quick Answer
The Transfer Case Control Module always monitors the Gear Position Sensor signal circuit and the Transfer Case Range Actuator Position Sensor signal circuit. Common causes include Faulty Transfer Case Range Actuator Position Sensor, Transfer Case Range Actuator Position Sensor harness is open or shorted, Transfer Case Range Actuator Position Sensor 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
- C0398 2017 GMC Sierra indicates Range Actuator Position - Range Position Correlation.
- Common causes
- Common causes include Faulty Transfer Case Range Actuator Position Sensor, Transfer Case Range Actuator Position Sensor harness is open or shorted, Transfer Case Range Actuator Position Sensor 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 C0398 2017 GMC Sierra Description
What are the Possible Causes of the DTC C0398 2017 GMC Sierra?
- Faulty Transfer Case Range Actuator Position Sensor
- Transfer Case Range Actuator Position Sensor harness is open or shorted
- Transfer Case Range Actuator Position Sensor circuit poor electrical connection
- Faulty Transfer Case Range Actuator Position Sensor (part of the Transfer Case Motor or Transfer Case Two/Four Wheel Drive Actuator)
- Faulty Transfer Case Control Module
How to Fix the DTC C0398 2017 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C0398 2017 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.
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Frequently Asked Questions about C0398 2017 GMC Sierra Code
1. What does the OBDII code C0398 mean on a 2017 GMC Sierra?
C0398 indicates a fault with the range actuator position sensor, specifically a correlation issue between the range actuator position and the range position.
2. What are common symptoms of the C0398 code in a 2017 GMC Sierra?
Symptoms may include a Check Engine Light, issues shifting gears, the vehicle going into limp mode, or erratic transmission behavior.
3. What causes the C0398 code to appear on a 2017 GMC Sierra?
Common causes include a faulty range actuator position sensor, wiring issues, a damaged actuator, or a misaligned transmission range switch.
4. Can I drive my 2017 GMC Sierra with the C0398 code?
It’s not recommended, as continued driving may worsen the issue, cause transmission damage, or lead to unsafe driving conditions.
5. How is the C0398 code diagnosed on a 2017 GMC Sierra?
Technicians use a scan tool to verify the code, inspect wiring and connectors, check for proper range actuator operation, and confirm sensor calibration.
6. How do I fix the C0398 code on a 2017 GMC Sierra?
Repairs may involve replacing the range actuator position sensor, repairing damaged wiring, recalibrating the sensor, or addressing mechanical issues in the transmission.
7. Is the C0398 code covered under warranty for a 2017 GMC Sierra?
It depends on the vehicle's warranty status and coverage details. Check with your GMC dealer for confirmation.
8. How much does it cost to repair a C0398 error on a 2017 GMC Sierra?
Repair costs vary, but sensor replacement typically ranges from $200 to $400, depending on labor rates and parts pricing.
9. Can a dead battery cause the C0398 code in a 2017 GMC Sierra?
A weak or dead battery is unlikely to cause this specific code, but voltage issues could affect sensor performance and should be checked.
10. Does the C0398 code require reprogramming on a 2017 GMC Sierra?
In some cases, reprogramming or recalibration of the range actuator position sensor may be necessary after repairs.
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