AutoCodes – GMC – C038D 2016 GMC Sierra

C038D 2016 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 2016 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 262

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 2016 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 2016 GMC Sierra - Range Actuator Position Not Learned - AutoCodes.com — C038D 2016 GMC Sierra Code - Range Actuator Position Not Learned

What does this mean?

What are the Possible Causes of the DTC C038D 2016 GMC Sierra?

Perform Range Actuator Learn Procedure

How to Fix the DTC C038D 2016 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 2016 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 2016 GMC Sierra code?

Need more information on how to fix the C038D 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C038D 2016 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 2016 GMC Sierra Code

1. What does the OBDII code C038D mean on a 2016 GMC Sierra?

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?

Common symptoms include erratic shifting, transmission slippage, hesitation when accelerating, and the vehicle going into limp mode.

3. What are the possible causes of the C038D code on a 2016 GMC Sierra?

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

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

Diagnosis usually involves using a professional OBDII scanner to retrieve the specific trouble code, checking the transmission fluid level and condition, and inspecting the range actuator and related components for any visible damage.

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

It is not recommended to continue driving the vehicle with the C038D code present, as it can lead to further damage to the transmission system and potentially unsafe driving conditions.

6. How can the Range Actuator Position Not Learned code be repaired on a 2016 GMC Sierra?

Repairing the C038D code typically involves relearning the range actuator position through a proper relearn procedure using a diagnostic scan tool, replacing any faulty components, and ensuring proper transmission fluid levels.

7. Can I reset the C038D code on my GMC Sierra by disconnecting the battery?

While disconnecting the battery may clear the code temporarily, it is recommended to address the underlying issue causing the code to prevent it from reoccurring.

8. Is it necessary to visit a dealership for repairs related to the C038D code?

While some repairs related to the C038D code may require specialized tools or expertise, independent mechanics or automotive shops with experience in transmission systems can also effectively diagnose and repair the issue.

9. How much does it typically cost to repair the Range Actuator Position Not Learned code on a 2016 GMC Sierra?

The cost of repairing the C038D code can vary depending on the root cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

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

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