AutoCodes – GMC – C038D 2017 GMC Sierra

C038D 2017 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 2017 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 239

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code C038D 2017 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 2017 GMC Sierra - Range Actuator Position Not Learned - AutoCodes.com — C038D 2017 GMC Sierra Code - Range Actuator Position Not Learned

What does this mean?

What are the Possible Causes of the DTC C038D 2017 GMC Sierra?

Perform Range Actuator Learn Procedure

How to Fix the DTC C038D 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 C038D 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.

Need more information about the C038D 2017 GMC Sierra code?

Need more information on how to fix the C038D 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C038D 2017 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 2017 GMC Sierra Code

1. What does the OBDII code C038D mean for a 2017 GMC Sierra?

The code C038D indicates a "Range Actuator Position Not Learned" error in the transmission system of the 2017 GMC Sierra.

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

Common symptoms of this issue may include rough shifting, hesitation when changing gears, and the transmission not responding properly to driver inputs.

3. What are the possible causes of the Range Actuator Position Not Learned error in a 2017 GMC Sierra?

Possible causes of this error include a faulty range actuator, damaged wiring or connectors in the transmission system, or a software issue in the vehicle's computer system.

4. How can I diagnose the Range Actuator Position Not Learned problem in my 2017 GMC Sierra?

Diagnosing this issue typically 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 its connections for any visible damage.

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

It is not recommended to continue driving your GMC Sierra with the C038D code present, as it can lead to further damage to the transmission system and potentially compromise vehicle safety.

6. How can I repair the Range Actuator Position Not Learned issue in my 2017 GMC Sierra?

Repairing this issue may involve recalibrating the range actuator, repairing or replacing damaged wiring or connectors, updating the vehicle's software, or seeking assistance from a qualified mechanic.

7. Is it possible to reset the C038D trouble code in a 2017 GMC Sierra?

While you can clear the trouble code temporarily with an OBDII scanner, it is essential to address the underlying issue causing the Range Actuator Position Not Learned error to prevent it from reoccurring.

8. Will the Range Actuator Position Not Learned problem affect the vehicle's performance?

Yes, the Range Actuator Position Not Learned issue can affect the performance of the vehicle by causing transmission-related issues like improper shifting, reduced fuel efficiency, and potential drivability problems.

9. Can a DIY enthusiast fix the Range Actuator Position Not Learned problem in a 2017 GMC Sierra?

Depending on your level of automotive expertise and access to tools, a DIY enthusiast may be able to address simple causes of the C038D code, such as checking and cleaning connectors or resetting the range actuator position with guidance from a repair manual.

10. How much does it cost to repair the Range Actuator Position Not Learned issue in a 2017 GMC Sierra?

The cost of repairing the C038D code can vary widely depending on the specific cause of the issue, the need for parts replacement, and whether you choose to DIY or seek professional help. Estimates from mechanics or dealerships can provide more accurate pricing information.