P064F 2015 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 2015 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 2015 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 2015 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 2015 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 2015 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 2015 GMC Sierra code?
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Frequently Asked Questions about P064F 2015 GMC Sierra Code
What does the OBDII code P064F mean for a 2015 GMC Sierra?
The P064F code indicates "Unauthorized Software/Calibration Detected," meaning the vehicle’s ECM has identified non-approved or altered software or calibration.
What are the common symptoms of the P064F code in a 2015 GMC Sierra?
Symptoms may include the check engine light turning on, reduced engine performance, and limited functionality of certain systems.
What causes the P064F code to appear in a 2015 GMC Sierra?
This code typically occurs due to aftermarket tuning or software modifications, or if the ECM detects a mismatch in software calibration.
Can the P064F code affect the warranty of a 2015 GMC Sierra?
Yes, unauthorized software modifications can void the vehicle’s warranty, as they are not approved by the manufacturer.
How can I fix the P064F code in my 2015 GMC Sierra?
To fix the code, restore the ECM to its original manufacturer-approved calibration or replace the ECM if necessary.
Can a dealership clear the P064F code on my 2015 GMC Sierra?
Dealerships may clear the code, but they will often require verification that the ECM has the original software calibration.
Is the P064F code dangerous to drive with?
While it may not immediately cause safety issues, driving with this code can lead to reduced performance and potential long-term damage.
How can I avoid the P064F code on my 2015 GMC Sierra?
Avoid installing aftermarket tunes or software modifications on the vehicle’s ECM to prevent triggering this code.
Does the P064F code require ECM replacement?
Not always; restoring the ECM to its factory calibration may resolve the issue, but replacement may be necessary if the ECM is damaged.
Can a scan tool clear the P064F code on a 2015 GMC Sierra?
Clearing the code with a scan tool may work temporarily, but the code will reappear if the unauthorized software remains installed.
Discuss the causes and fixes for P064F 2015 GMC Sierra OBDII Code
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