P064F 2016 GMC Sierra Code - Unauthorized Software/Calibration Detected
Quick Answer
This is an internal fault detection of the transfer case control module. Common causes include Faulty Transfer Case Control Module, Transfer Case Control Module harness is open or shorted, Transfer Case Control Module 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
- P064F 2016 GMC Sierra indicates Unauthorized Software/Calibration Detected.
- Common causes
- Common causes include Faulty Transfer Case Control Module, Transfer Case Control Module harness is open or shorted, Transfer Case Control Module 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.
Code P064F 2016 GMC Sierra Description
At each power-up, the transfer case control module runs a self-test on the following:
- EEPROM Checksum
- ROM Checksum
- RAM Checksum
- RAM Malfunction
- Missing, incorrect, or invalid software
The Diagnostic Trouble Code (DTC) will be set when the transfer case control module has detected an invalid calibration.
What are the Possible Causes of the DTC P064F 2016 GMC Sierra?
- Faulty Transfer Case Control Module
- Transfer Case Control Module harness is open or shorted
- Transfer Case Control Module circuit poor electrical connection
How to Fix the DTC P064F 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 P064F 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 P064F 2016 GMC Sierra code?
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Frequently Asked Questions about P064F 2016 GMC Sierra Code
1. What does the OBDII code P064F mean for a 2016 GMC Sierra?
P064F indicates "Unauthorized Software/Calibration Detected," meaning the vehicle's control module has identified non-factory programming or an unauthorized calibration.
2. What are common symptoms of the P064F code on a 2016 GMC Sierra?
Symptoms may include a check engine light, reduced engine performance, potential warranty issues, or no noticeable symptoms depending on the modifications.
3. What causes the P064F code to appear?
The code is typically triggered by aftermarket tuning, unauthorized software updates, or incorrect calibration of the vehicle's control module.
4. Can the P064F code affect the vehicle’s performance?
It may affect performance if the aftermarket software or calibration is incompatible or improperly installed, but in some cases, performance remains unchanged.
5. Is it safe to drive with the P064F code on my 2016 GMC Sierra?
It is generally safe to drive, but the code could impact warranty coverage or cause issues if the calibration is improperly done.
6. How can I fix the P064F code on a 2016 GMC Sierra?
Restoring the factory software or calibration using a GM-approved tool or technician will typically resolve the issue.
7. Can a dealership detect the P064F code?
Yes, dealerships can detect this code, and it may void warranties if unauthorized modifications are found.
8. Will clearing the P064F code solve the problem?
Clearing the code without addressing the underlying unauthorized software or calibration will not prevent it from returning.
9. Can a faulty control module cause the P064F code?
It’s rare, but a malfunctioning control module might falsely report unauthorized software. Diagnosis is required.
10. How can I avoid the P064F code on my GMC Sierra?
Stick to factory-approved software updates and avoid aftermarket tuning or calibrations to prevent this code.
Discuss the causes and fixes for P064F 2016 GMC Sierra OBDII Code
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