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Engine-Codes – GMC – P135F 2014 GMC Sierra

P135F 2014 GMC Sierra Code - Cooling Fan 4 Status Signals Message Counter Incorrect

Quick Answer

The diagnostic trouble code P135F for a 2014 GMC Sierra indicates that there is an issue with the Cooling Fan 4 Status Signals Message Counter being incorrect. Common causes include Faulty cooling fan relay, Defective cooling fan motor, Wiring issues in the cooling fan circuit. 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
P135F 2014 GMC Sierra indicates Cooling Fan 4 Status Signals Message Counter Incorrect.
Common causes
Common causes include Faulty cooling fan relay, Defective cooling fan motor, Wiring issues in the cooling fan circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P135F 2014 GMC Sierra Description

The diagnostic trouble code P135F for a 2014 GMC Sierra indicates that there is an issue with the Cooling Fan 4 Status Signals Message Counter being incorrect. In modern vehicles, the cooling fan plays a crucial role in maintaining the engine's optimal operating temperature. The cooling fan is responsible for dissipating heat generated by the engine to prevent overheating, which can lead to serious engine damage if not addressed promptly.

OBDII Code P135F 2014 GMC Sierra - Cooling Fan 4 Status Signals Message Counter Incorrect
P135F 2014 GMC Sierra Code - Cooling Fan 4 Status Signals Message Counter Incorrect

Common Causes of P135F 2014 GMC Sierra

  1. Faulty cooling fan relay
  2. Defective cooling fan motor
  3. Wiring issues in the cooling fan circuit
  4. Malfunctioning engine coolant temperature sensor
  5. Faulty cooling fan control module

Symptoms of P135F 2014 GMC Sierra

  1. Engine overheating
  2. Cooling fan not turning on
  3. Poor air conditioning performance
  4. Check engine light illuminated
  5. Reduced fuel efficiency

How to Fix P135F 2014 GMC Sierra

  1. Begin by conducting a visual inspection of the cooling fan system, checking for any visible damage or loose connections.
  2. Use a diagnostic scanner to retrieve the specific details of the P135F code and pinpoint the exact source of the issue.
  3. Test the cooling fan relay, motor, and associated wiring for proper functionality.
  4. Inspect the engine coolant temperature sensor and cooling fan control module for any faults and replace if necessary.
  5. Clear the trouble code from the vehicle's computer system and test the cooling fan to ensure it is operating correctly.

Cost to Fix P135F 2014 GMC Sierra

The cost of repairing the P135F code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. On average, the repair costs for this type of problem can range from $150 to $500, including parts and labor. However, it is important to note that labor rates at auto repair shops can vary significantly based on location, with rates typically ranging from $80 to $150 per hour. It is advisable to consult with a local auto repair shop for a more accurate estimate based on your specific circumstances.

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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 P135F 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P135F in a 2014 GMC Sierra?

The common symptoms include the cooling fan not operating properly, engine overheating, and the Check Engine Light illuminating on the dashboard.

2. What does the OBDII code P135F "Cooling Fan 4 Status Signals Message Counter Incorrect" indicate in a 2014 GMC Sierra?

This code indicates that the signal counter for the status of cooling fan 4 is not registering correctly, potentially leading to cooling fan malfunctions.

3. What are the possible causes of OBDII code P135F in a 2014 GMC Sierra?

Possible causes include a faulty cooling fan, issues with the cooling fan relay, wiring problems, or a malfunctioning engine control module (ECM).

4. How can I diagnose the OBDII code P135F in my 2014 GMC Sierra?

Diagnosis typically involves checking the cooling fan operation, inspecting the wiring and connections related to cooling fan 4, and using a scan tool to monitor the signal counter readings.

5. How can I repair OBDII code P135F in a 2014 GMC Sierra?

Repair options may include replacing the cooling fan, repairing or replacing the cooling fan relay, fixing any wiring issues, or reprogramming the ECM if necessary.

6. Can driving with OBDII code P135F in a 2014 GMC Sierra cause further damage?

Continuing to drive with this code may lead to engine overheating and potential damage, so it is advisable to address the issue promptly.

7. Is it safe to reset the OBDII code P135F in a 2014 GMC Sierra and continue driving?

Resetting the code may temporarily turn off the Check Engine Light, but if the underlying issue is not fixed, the problem will likely reoccur, so it is best to address the root cause.

8. How much does it typically cost to repair OBDII code P135F in a 2014 GMC Sierra?

The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred dollars for simpler fixes to over a thousand dollars for more complex repairs.

9. Can I fix OBDII code P135F in a 2014 GMC Sierra myself, or should I take it to a mechanic?

Depending on your skill level and access to tools, you may be able to address simpler causes like a faulty relay or wiring issue. However, if the problem is more complex, it is recommended to seek professional help.

10. How can I prevent OBDII code P135F from occurring in my 2014 GMC Sierra in the future?

Regularly maintaining your vehicle, checking the cooling system components for any signs of wear or damage, and addressing any cooling system issues promptly can help prevent this code from occurring.

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