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Engine-Codes – GMC – P135E 2016 GMC Sierra

P135E 2016 GMC Sierra Code - Cooling Fan 3 Status Signals Message Counter Incorrect

Quick Answer

The P135E diagnostic trouble code for a 2016 GMC Sierra indicates that the Cooling Fan 3 Status Signals Message Counter is incorrect. Common causes include Faulty cooling fan motor, Malfunctioning cooling fan relay, Damaged wiring harness. 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
P135E 2016 GMC Sierra indicates Cooling Fan 3 Status Signals Message Counter Incorrect.
Common causes
Common causes include Faulty cooling fan motor, Malfunctioning cooling fan relay, Damaged wiring harness.
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 P135E 2016 GMC Sierra Description

The P135E diagnostic trouble code for a 2016 GMC Sierra indicates that the Cooling Fan 3 Status Signals Message Counter is incorrect. This code is typically related to the engine cooling system, specifically the third cooling fan. The cooling fan plays a crucial role in regulating the temperature of the engine by dissipating heat generated during operation. When the cooling fan 3 status signals message counter is incorrect, it means that the signals being received by the vehicle's onboard computer related to the operation of the third cooling fan are not within the expected parameters.

OBDII Code P135E 2016 GMC Sierra - Cooling Fan 3 Status Signals Message Counter Incorrect
P135E 2016 GMC Sierra Code - Cooling Fan 3 Status Signals Message Counter Incorrect

Common Causes of P135E 2016 GMC Sierra

  1. Faulty cooling fan motor
  2. Malfunctioning cooling fan relay
  3. Damaged wiring harness
  4. Issues with the vehicle's onboard computer system
  5. Electrical issues such as blown fuses or loose connections

Symptoms of P135E 2016 GMC Sierra

  1. Engine overheating
  2. Increased temperature gauge readings
  3. Reduced air conditioning performance
  4. Illumination of the check engine light
  5. Loss of power or engine misfires

How to Fix P135E 2016 GMC Sierra

  1. Begin by conducting a visual inspection of the cooling fan, relay, and wiring harness to check for any visible signs of damage or wear.
  2. Test the cooling fan motor and relay using a multimeter to determine if they are functioning correctly.
  3. Check the wiring harness for continuity and repair or replace any damaged wires as needed.
  4. Reset the vehicle's onboard computer system to clear the error code and monitor the cooling fan's operation to ensure the issue has been resolved.
  5. If the problem persists, consider seeking professional assistance from a certified mechanic to diagnose and repair any underlying issues with the cooling fan system.

Cost to Fix P135E 2016 GMC Sierra

The typical repair costs for addressing a P135E code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts such as a cooling fan motor, relay, or wiring harness can range from $100 to $300. Labor costs at auto repair shops typically range from $80 to $150 per hour. Therefore, the total repair cost for this issue could range from $200 to $600 or more, depending on the extent of the repairs needed. It is advisable to consult with a local auto repair shop for a more accurate estimate based on your specific vehicle and location.

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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 P135E 2016 GMC Sierra Code

1. What does the OBDII code P135E mean on a 2016 GMC Sierra?

P135E indicates an issue with the Cooling Fan 3 Status Signals, specifically that the message counter is incorrect, which suggests a communication or data mismatch in the cooling fan control system.

2. What are the common symptoms of code P135E in a 2016 GMC Sierra?

Symptoms may include the check engine light turning on, erratic cooling fan operation, overheating, or reduced engine performance.

3. What causes the P135E code to appear on a 2016 GMC Sierra?

Common causes include a faulty cooling fan module, wiring or connector issues, communication errors in the control module, or software glitches in the engine control module (ECM).

4. Can a faulty cooling fan cause engine overheating in a 2016 GMC Sierra?

Yes, if the cooling fan is not functioning properly due to the P135E code, it can lead to insufficient cooling and potential engine overheating.

5. How can I diagnose the P135E code on my 2016 GMC Sierra?

Diagnosis involves inspecting wiring and connectors for damage, testing the cooling fan module for proper operation, and using a scan tool to check for additional codes or communication errors.

6. Is it safe to drive a 2016 GMC Sierra with the P135E code?

Driving with this code may lead to engine overheating or reduced performance. It is recommended to address the issue promptly to avoid further damage.

7. How do you fix the P135E code on a 2016 GMC Sierra?

Repairs may include replacing the cooling fan module, fixing damaged wiring or connectors, updating ECM software, or resetting the system with a scan tool after repairs.

8. Can a software update resolve the P135E code on a 2016 GMC Sierra?

In some cases, a software update to the engine control module can resolve communication mismatches causing the P135E code.

9. What tools are needed to troubleshoot the P135E code on a 2016 GMC Sierra?

You’ll need a diagnostic scan tool capable of reading and clearing codes, a multimeter to test electrical components, and a repair manual for wiring diagrams.

10. How much does it cost to repair the P135E code on a 2016 GMC Sierra?

Repair costs can vary depending on the root cause, ranging from $100 for minor wiring repairs to $500 or more for replacing the cooling fan module or related components.

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