AutoCodes – GMC – P135F 2017 GMC Sierra

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

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Cooling Fan 4, Cooling Fan 4 harness is open or shorted, Cooling Fan 4 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: P135F 2017 GMC Sierra indicates Cooling Fan 4 Status Signals Message Counter Incorrect.
Common causes: Common causes include Faulty Cooling Fan 4, Cooling Fan 4 harness is open or shorted, Cooling Fan 4 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.

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Code Popularity 226

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 27, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P135F 2017 GMC Sierra Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Cooling Fan 4 Status Signals Message Counter is Incorrect.

OBDII Code P135F 2017 GMC Sierra - Cooling Fan 4 Status Signals Message Counter Incorrect - AutoCodes.com — P135F 2017 GMC Sierra Code - Cooling Fan 4 Status Signals Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P135F 2017 GMC Sierra?

Faulty Cooling Fan 4
Cooling Fan 4 harness is open or shorted
Cooling Fan 4 circuit poor electrical connection

How to Fix the DTC P135F 2017 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 P135F 2017 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 P135F 2017 GMC Sierra code?

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

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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 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?

Itâ€™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 itâ€™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.