AutoCodes – GMC – C0398 2014 GMC Sierra

C0398 2014 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 2014 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.

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Code Popularity 454

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 12, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0398 2014 GMC Sierra Description

The Transfer Case Control Module always monitors the Gear Position Sensor signal circuit and the Transfer Case Range Actuator Position Sensor signal circuit. The signal voltage values are converted to degrees to determine the position of the transfer case. The Transfer Case Control Module continuously compares the position of the Transfer Case Range Actuator Position Sensor to that of the Gear Position Sensor. If the positions do not match within a pre-determined range, it is considered an error and a fault is set. The Transfer Case Range Actuator Position Sensor is a higher resolution sensor and is more accurate but requires the Gear Position Sensor for correlation check at ignition ON and during transfer case range changes. The Diagnostic Trouble Code (DTC) will be set when the Range Actuator Position Sensor and the Range Position Sensor are both showing valid positions but differ by greater than a predetermined amount when no range change is in progress. The Transfer Case Range Actuator Position Sensor, also known as the incremental position sensor, is part of the Transfer Case Motor. The Gear Position Sensor, also known as the Transfer Case Range Actuator Position Sensor, the Two/Four Wheel Drive Actuator Position Sensor, or the rotational position sensor.

OBDII Code C0398 2014 GMC Sierra - Range Actuator Position - Range Position Correlation - AutoCodes.com — C0398 2014 GMC Sierra Code - Range Actuator Position - Range Position Correlation

What does this mean?

What are the Possible Causes of the DTC C0398 2014 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 2014 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 2014 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 C0398 2014 GMC Sierra code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C0398 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code C0398 in a 2014 GMC Sierra?

- Common symptoms include erratic shifting, difficulty changing gears, and illuminated warning lights on the dashboard.

2. What does the OBDII code C0398 indicating "Range Actuator Position - Range Position Correlation" mean for a 2014 GMC Sierra?

- This code suggests a problem with the correlation between the range actuator position and the specified range position in the transmission system.

3. What are the possible causes of OBDII code C0398 in a 2014 GMC Sierra?

- Potential causes include a faulty range actuator, issues with the transmission range sensor, wiring problems, or a malfunctioning control module.

4. How can I diagnose the OBDII code C0398 in my 2014 GMC Sierra?

- Diagnosing this code typically involves using a scan tool to retrieve the specific details of the error and then inspecting the range actuator, sensors, and related components for any visible damage or issues.

5. Can I still drive my 2014 GMC Sierra with OBDII code C0398 present?

- It is not recommended to continue driving the vehicle with this code active, as it can lead to further transmission problems and potential safety hazards. Seek professional assistance to address the issue promptly.

6. Are there any DIY repair tips for fixing OBDII code C0398 on a 2014 GMC Sierra?

- DIY repairs for this code may include checking and cleaning the electrical connectors, inspecting wiring for any breaks or shorts, and ensuring proper alignment of the range actuator.

7. How much does it typically cost to repair OBDII code C0398 in a 2014 GMC Sierra?

- Repair costs can vary depending on the exact cause of the issue, but they may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can resetting the OBDII system clear the C0398 code in a 2014 GMC Sierra?

- Resetting the system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear once the problem is detected again by the vehicle's onboard diagnostics.

9. Is it safe to ignore OBDII code C0398 in my 2014 GMC Sierra?

- Ignoring this code can lead to potential transmission failures or safety risks while driving, so it is advisable to have the issue diagnosed and repaired as soon as possible.

10. How long does it take to repair OBDII code C0398 in a 2014 GMC Sierra?

- The repair time for this code can vary based on the extent of the problem and the availability of parts, but it typically takes a few hours to a full day for a professional technician to diagnose and fix the issue.