P064F 2014 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 2014 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 2014 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 2014 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 2014 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 2014 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 2014 GMC Sierra code?
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Frequently Asked Questions about P064F 2014 GMC Sierra Code
What does the OBDII code P064F mean on a 2014 GMC Sierra?
Code P064F indicates that the vehicle's Engine Control Module (ECM) has detected unauthorized software or calibration changes.
What are common symptoms of code P064F in a 2014 GMC Sierra?
Symptoms typically include the illumination of the Check Engine Light, reduced engine performance, or failure to pass emissions testing.
What causes code P064F to appear in a 2014 GMC Sierra?
This code is often triggered by aftermarket tuning or modifications to the ECM software, unauthorized calibration changes, or corrupted programming.
Can code P064F affect the drivability of my 2014 GMC Sierra?
While drivability may not always be impacted, the vehicle could experience reduced performance or fail to operate optimally.
How can I fix code P064F on a 2014 GMC Sierra?
To resolve this code, restore the ECM to the factory calibration using an OEM-compatible tool or have the dealership reprogram the ECM.
Is it safe to drive my 2014 GMC Sierra with code P064F?
Driving with this code is generally safe, but it is recommended to address it promptly to avoid potential performance or emissions issues.
Will code P064F cause my 2014 GMC Sierra to fail an emissions test?
Yes, this code can result in an emissions test failure due to the unauthorized software or calibration detection.
Can aftermarket tuning trigger code P064F on a 2014 GMC Sierra?
Yes, aftermarket tuning or modifications are common causes of this code since they alter the ECM software from factory specifications.
How much does it cost to fix code P064F on a 2014 GMC Sierra?
The cost varies but typically ranges from $100 to $300 for ECM reprogramming or calibration reset, depending on the service provider.
Do I need a dealership to fix code P064F on my 2014 GMC Sierra?
While a dealership can resolve this code, some independent shops with OEM-compatible tools may also be able to reprogram the ECM.
Discuss the causes and fixes for P064F 2014 GMC Sierra OBDII Code
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