Engine-Codes.com
Engine-Codes – GMC – P135F 2017 GMC Sierra

P135F 2017 GMC Sierra Code - Cooling Fan 4 Status Signals Message Counter Incorrect

Quick Answer

The P135F diagnostic trouble code (DTC) for the 2017 GMC Sierra indicates a problem with the status signals from Cooling Fan 4, specifically that the message counter is incorrect. Common causes include Faulty cooling fan motor or assembly, Damaged or corroded wiring and connectors related to the cooling fan circuit, Malfunctioning engine control module (ECM) or software issues. 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 2017 GMC Sierra indicates Cooling Fan 4 Status Signals Message Counter Incorrect.
Common causes
Common causes include Faulty cooling fan motor or assembly, Damaged or corroded wiring and connectors related to the cooling fan circuit, Malfunctioning engine control module (ECM) or software issues.
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 Oct 08, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P135F 2017 GMC Sierra Description

The P135F diagnostic trouble code (DTC) for the 2017 GMC Sierra indicates a problem with the status signals from Cooling Fan 4, specifically that the message counter is incorrect. This code is part of the vehicle's onboard diagnostics system, which monitors various components to ensure optimal performance and emissions control. The cooling fans are critical for regulating engine temperature and preventing overheating. When the engine control module (ECM) detects an inconsistency in the signals from Cooling Fan 4, it triggers this code.

OBDII Code P135F 2017 GMC Sierra - Cooling Fan 4 Status Signals Message Counter Incorrect
P135F 2017 GMC Sierra Code - Cooling Fan 4 Status Signals Message Counter Incorrect

Common Causes of P135F 2017 GMC Sierra

  1. Faulty cooling fan motor or assembly.
  2. Damaged or corroded wiring and connectors related to the cooling fan circuit.
  3. Malfunctioning engine control module (ECM) or software issues.
  4. Defective temperature sensor that inaccurately reports engine temperature.
  5. Poor electrical connections or ground issues affecting the cooling fan operation.

Symptoms of P135F 2017 GMC Sierra

  1. Engine overheating, especially during heavy load or high ambient temperatures.
  2. Erratic or non-functioning cooling fan operation.
  3. Increased engine temperature gauge readings.
  4. Reduced engine performance, particularly during acceleration.
  5. Activation of the check engine light (CEL) on the dashboard.

How to Fix P135F 2017 GMC Sierra

  1. Diagnostic Scan: Begin by using an OBD-II scanner to confirm the P135F code and check for any additional codes that may provide further insight into the issue.
  2. Visual Inspection: Inspect the wiring and connectors associated with Cooling Fan 4 for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test Cooling Fan Operation: Manually activate the cooling fan using a diagnostic tool or by applying direct power to the fan motor to determine if it operates correctly.
  4. Check Temperature Sensor: Test the engine temperature sensor for proper operation and replace it if it is found to be faulty.
  5. ECM Update or Replacement: If all other components are functioning correctly, consider reprogramming or replacing the ECM, especially if software issues are suspected.

Cost to Fix P135F 2017 GMC Sierra

The cost to diagnose and repair the P135F code can vary significantly based on the specific issue and local labor rates. On average, you might expect to pay between $150 and $600 for repairs, depending on whether parts need to be replaced (like the cooling fan motor or temperature sensor) and the complexity of the labor involved. Diagnostic time typically ranges from 1 to 2 hours, with labor rates at auto repair shops varying from $80 to $150 per hour. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower rates. For a more precise estimate, it is advisable to check local repair shops and their pricing structures.

Need more information about the P135F 2017 GMC Sierra code?

Need more information on how to fix the P135F 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P135F 2017 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 2017 GMC Sierra Code

1. What does the OBDII code P135F mean on a 2017 GMC Sierra?

P135F indicates an issue with the Cooling Fan 4 Status Signals Message Counter. This typically means the ECM is detecting incorrect or inconsistent signals from the cooling fan system.

2. What are the common symptoms of code P135F in a 2017 GMC Sierra?

Symptoms may include the cooling fan running improperly, engine overheating, abnormal fan noise, or the check engine light turning on.

3. What causes the P135F code to appear on a 2017 GMC Sierra?

Common causes include a malfunctioning cooling fan module, wiring or connector issues, a failing ECM, or communication errors between the ECM and the cooling fan.

4. Can I drive my 2017 GMC Sierra with the P135F code?

It’s not recommended to drive for long periods with this code active, as improper cooling fan operation can lead to engine overheating and potential damage.

5. How do I diagnose the P135F code on my 2017 GMC Sierra?

A technician will typically inspect the cooling fan module, check for damaged wiring or connectors, and use a diagnostic scanner to monitor the fan's communication signals with the ECM.

6. Is the P135F code related to only one specific cooling fan?

Yes, it specifically involves Cooling Fan 4, which is one of the fans in the vehicle's cooling system.

7. How can I fix the P135F code on my 2017 GMC Sierra?

Repairs may include replacing the cooling fan module, repairing damaged wiring or connectors, updating the ECM software, or replacing the ECM if necessary.

8. Can a faulty cooling fan relay cause the P135F code?

While the P135F code specifically relates to the fan's communication signals, a faulty relay could indirectly contribute to improper fan operation, so it’s worth inspecting.

9. How much does it cost to repair a P135F code issue on a 2017 GMC Sierra?

Repair costs can vary widely depending on the issue but may range from $150 for simple wiring repairs to over $1,000 if the ECM or cooling fan module needs replacement.

10. Will resetting the check engine light fix the P135F code?

Resetting the light may temporarily clear the code, but the issue will likely return unless the underlying problem is properly diagnosed and repaired.

Discuss the causes and fixes for P135F 2017 GMC Sierra OBDII Code

Submit a New Comment

Code P135F 2017 GMC Sierra comments

No comments found for this page.