AutoCodes – GMC – C038D 2014 GMC Sierra

C038D 2014 GMC Sierra Code - Range Actuator Position Not Learned

Quick Answer

This is an internal programming fault detection of the transfer case control module. Common causes include Perform Range Actuator Learn Procedure. 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: C038D 2014 GMC Sierra indicates Range Actuator Position Not Learned.
Common causes: Common causes include Perform Range Actuator Learn Procedure.
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 249

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 11, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C038D 2014 GMC Sierra Description

This is an internal programming fault detection of the transfer case control module. No external circuits are involved.
This Diagnostic Trouble Code (DTC) is set anytime a transfer case control module is replaced or reprogrammed. The Range Actuator Learn procedure must be performed in order for the transfer case control module to learn current clutch tolerance based on clutch stack up and accumulated clutch wear.

OBDII Code C038D 2014 GMC Sierra - Range Actuator Position Not Learned - AutoCodes.com — C038D 2014 GMC Sierra Code - Range Actuator Position Not Learned

What does this mean?

What are the Possible Causes of the DTC C038D 2014 GMC Sierra?

Perform Range Actuator Learn Procedure

How to Fix the DTC C038D 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 C038D 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 C038D 2014 GMC Sierra code?

Need more information on how to fix the C038D 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C038D 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 C038D 2014 GMC Sierra Code

1. What does the OBDII code C038D on a 2014 GMC Sierra mean?

The code C038D indicates a "Range Actuator Position Not Learned" issue in the transmission system of the vehicle.

2. What are the common symptoms of the Range Actuator Position Not Learned code on a GMC Sierra?

Common symptoms may include rough shifting, hesitation when changing gears, and possibly the vehicle going into limp mode.

3. What are the possible causes of the C038D code on a 2014 GMC Sierra?

Possible causes can include a faulty range actuator, damaged wiring or connectors, low transmission fluid, or a malfunctioning transmission control module.

4. How can I diagnose the Range Actuator Position Not Learned code on my GMC Sierra?

Diagnosis typically involves using a diagnostic scanner to read the code, checking the transmission fluid level and condition, inspecting the wiring and connectors, and testing the range actuator.

5. Can I drive my GMC Sierra with the C038D code present?

It is not recommended to drive the vehicle with the C038D code as it can lead to further transmission damage. It's best to address the issue promptly.

6. How do I repair the Range Actuator Position Not Learned code on a 2014 GMC Sierra?

Repair may involve reprogramming the transmission control module, replacing the range actuator, repairing or replacing damaged wiring, and ensuring proper transmission fluid levels.

7. Is it possible to reset the C038D code on a GMC Sierra without fixing the issue?

While you can clear the code with a diagnostic scanner, it is crucial to address the underlying problem causing the code to prevent further damage to the transmission.

8. Can a DIY enthusiast fix the Range Actuator Position Not Learned issue on a GMC Sierra?

Depending on the individual's mechanical skills and access to tools, some DIY enthusiasts may be able to tackle this repair. However, transmission repairs can be complex, so professional help is recommended.

9. How much does it cost to repair the C038D code on a 2014 GMC Sierra?

The cost of repair can vary depending on the underlying issue, the parts needed, and whether you choose to go to a dealership or an independent mechanic. It's best to get a few quotes for an accurate estimate.

10. How can I prevent the C038D code from appearing on my GMC Sierra in the future?

Regular maintenance, including checking and changing transmission fluid at recommended intervals, can help prevent issues like the Range Actuator Position Not Learned code from occurring.