AutoCodes – Chevrolet – P135C 2017 Chevrolet Silverado

P135C 2017 Chevrolet Silverado Code - Cooling Fan 1 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 1, Cooling Fan 1 harness is open or shorted, Cooling Fan 1 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: P135C 2017 Chevrolet Silverado indicates Cooling Fan 1 Status Signals Message Counter Incorrect.
Common causes: Common causes include Faulty Cooling Fan 1, Cooling Fan 1 harness is open or shorted, Cooling Fan 1 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 260

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 P135C 2017 Chevrolet Silverado 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 1 Status Signals Message Counter is Incorrect.

OBDII Code P135C 2017 Chevrolet Silverado - Cooling Fan 1 Status Signals Message Counter Incorrect - AutoCodes.com — P135C 2017 Chevrolet Silverado Code - Cooling Fan 1 Status Signals Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P135C 2017 Chevrolet Silverado?

Faulty Cooling Fan 1
Cooling Fan 1 harness is open or shorted
Cooling Fan 1 circuit poor electrical connection

How to Fix the DTC P135C 2017 Chevrolet Silverado?

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 P135C 2017 Chevrolet Silverado 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 P135C 2017 Chevrolet Silverado code?

Need more information on how to fix the P135C 2017 Chevrolet Silverado 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 P135C 2017 Chevrolet Silverado Code

1. What does the OBDII code P135C mean on a 2017 Chevrolet Silverado?

P135C indicates an issue with the Cooling Fan 1 Status Signals Message Counter being incorrect, suggesting a communication error between the Engine Control Module (ECM) and the cooling fan module.

2. What are the common symptoms of code P135C in a 2017 Chevrolet Silverado?

Symptoms may include the cooling fan running at incorrect speeds, the fan not turning on, potential engine overheating, or an illuminated Check Engine Light.

3. What causes the P135C code to appear on a 2017 Chevrolet Silverado?

Possible causes include a faulty cooling fan module, damaged wiring or connectors, a software issue in the ECM, or poor communication between the ECM and cooling fan module.

4. Can a P135C code cause engine overheating?

Yes, if the cooling fan is not functioning properly due to this issue, it can lead to inadequate engine cooling and potential overheating.

5. How do you diagnose code P135C on a 2017 Chevrolet Silverado?

Diagnosis involves scanning for codes, inspecting the cooling fan module and related wiring for damage, checking communication signals between the ECM and fan module, and testing the fan operation.

6. Is the cooling fan module usually the main issue for a P135C code?

While the cooling fan module can be the culprit, the issue could also stem from wiring problems or a fault in the ECM. Proper diagnosis is essential.

7. Can a software update resolve the P135C code on a 2017 Chevrolet Silverado?

In some cases, a software update for the ECM may resolve communication issues causing the P135C code, but this depends on the specific circumstances.

8. How much does it cost to repair a P135C code on a 2017 Chevrolet Silverado?

Repair costs can vary, ranging from $50 to $150 for wiring repairs, $300 to $600 for a new cooling fan module, or more if ECM reprogramming is required.

9. Can I drive my 2017 Chevrolet Silverado with a P135C code?

Driving with this code is not recommended, as improper cooling fan operation can lead to engine overheating and potential long-term damage.

10. What tools are needed to fix a P135C code on a 2017 Chevrolet Silverado?

Common tools include an OBDII scanner, a multimeter for electrical testing, and potentially specialized diagnostic tools for ECM communication testing.