C038D GMC 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 GMC 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.
Code C038D GMC Description
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.
What are the Possible Causes of the DTC C038D GMC?
- Perform Range Actuator Learn Procedure
How to Fix the DTC C038D GMC?
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 GMC 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 GMC code?
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Need Help with the Code?
Get the C038D GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- C038D 2014 GMC Sierra — Range Actuator Position Not Learned
- C038D 2015 GMC Sierra — Range Actuator Position Not Learned
- C038D 2016 GMC Sierra — Range Actuator Position Not Learned
- C038D 2017 GMC Sierra — Range Actuator Position Not Learned
- C038D 2018 GMC Sierra — Range Actuator Position Not Learned
Frequently Asked Questions about C038D GMC Code
1. What are the common symptoms associated with OBDII code C038D GMC (Range Actuator Position Not Learned)?
The common symptoms include rough shifting, transmission slipping, decreased fuel efficiency, and the vehicle going into limp mode.
2. What are the possible causes of OBDII code C038D GMC?
Possible causes include a faulty range actuator, damaged wiring or connectors, low transmission fluid level, or a malfunctioning transmission control module.
3. How can I diagnose the issue related to OBDII code C038D GMC?
Diagnosing the issue typically involves using a professional OBDII scanner to retrieve the code, checking the transmission fluid level and condition, inspecting the wiring and connectors, and testing the range actuator and transmission control module.
4. Can I continue driving my vehicle with OBDII code C038D GMC?
It is not recommended to continue driving your vehicle with this code present, as it can lead to further damage to the transmission and other components. It is best to address the issue promptly.
5. What are some repair tips for fixing OBDII code C038D GMC?
Repair tips may include replacing the faulty range actuator, repairing any damaged wiring or connectors, ensuring the transmission fluid is at the correct level and in good condition, and relearning the range actuator position using a professional diagnostic tool.
6. How much does it typically cost to repair OBDII code C038D GMC?
The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced. It is recommended to consult with a professional mechanic for an accurate estimate.
7. Can OBDII code C038D GMC be cleared/reset without fixing the underlying issue?
While you can clear the code temporarily, it is not recommended to do so without addressing the underlying issue first. The code is likely to reappear if the problem is not fixed.
8. Is it possible to prevent OBDII code C038D GMC from occurring in the future?
Regular maintenance of your vehicle, including checking the transmission fluid levels and condition, can help prevent issues that may trigger this code. Addressing any potential transmission problems early can also prevent this code from occurring.
9. How long does it take to repair OBDII code C038D GMC?
The repair time can vary depending on the specific issue causing the code. Simple fixes like relearning the range actuator position may take a short amount of time, while more complex issues could require several hours or even days to repair.
10. Can I fix OBDII code C038D GMC myself, or do I need to take it to a professional mechanic?
While some DIY enthusiasts may be able to address simpler issues related to this code, it is generally recommended to seek the expertise of a professional mechanic, especially for more complex transmission problems.
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