P135D 2018 GMC Sierra Code - Cooling Fan 2 Status Signals Message Counter Incorrect
Quick Answer
The P135D diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates that the Cooling Fan 2 Status Signals Message Counter is incorrect. Common causes include Faulty Cooling Fan 2, Wiring or connection issues, Faulty control module. 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
- P135D 2018 GMC Sierra indicates Cooling Fan 2 Status Signals Message Counter Incorrect.
- Common causes
- Common causes include Faulty Cooling Fan 2, Wiring or connection issues, Faulty control module.
- 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 P135D 2018 GMC Sierra Description
The P135D diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates that the Cooling Fan 2 Status Signals Message Counter is incorrect. This code points to an issue with the cooling fan system in the vehicle, specifically with the signals being received from Cooling Fan 2. The cooling fan system is crucial for regulating the temperature of the engine and preventing it from overheating. When the signals are not being received correctly, it can lead to inadequate cooling of the engine, which may result in potential damage and reduced performance.
Common Causes of P135D 2018 GMC Sierra
- Faulty Cooling Fan 2
- Wiring or connection issues
- Faulty control module
- Software malfunction
- Environmental factors such as debris blocking the cooling fan
Symptoms of P135D 2018 GMC Sierra
- Engine overheating
- Increased temperature gauge readings
- Reduced air conditioning performance
- Loss of power or performance
- Check Engine Light illuminated
How to Fix P135D 2018 GMC Sierra
- Begin by conducting a thorough inspection of the cooling fan system, including Cooling Fan 2, wiring, and connections.
- Test the cooling fan operation to determine if it is functioning correctly.
- Check the control module for any faults or errors and reprogram if necessary.
- Clear the DTC from the vehicle's computer system and reset the message counter.
- Test drive the vehicle to ensure that the cooling fan system is operating as intended.
Cost to Fix P135D 2018 GMC Sierra
The cost of repairing a Cooling Fan 2 Status Signals Message Counter Incorrect issue can vary depending on the specific cause of the problem and the parts required for the repair. In general, the cost of parts for a cooling fan system repair can range from $100 to $500, and labor costs can add an additional $100 to $300. Overall, the total repair cost for this issue may be in the range of $200 to $800. It is important to note that labor rates and part prices can vary based on location, vehicle make and model, and the repair shop chosen. It is recommended to obtain quotes from multiple auto repair shops to find the best price for the repair.
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Frequently Asked Questions about P135D 2018 GMC Sierra Code
1. What does the OBDII code P135D mean on a 2018 GMC Sierra?
This code indicates an issue with the Cooling Fan 2 status signals, specifically that the message counter is incorrect or not updating as expected.
2. What are the symptoms of code P135D on a 2018 GMC Sierra?
Common symptoms include the check engine light turning on, irregular cooling fan operation, potential overheating, or reduced cooling efficiency.
3. What causes the P135D code to appear on a GMC Sierra?
The most common causes are faulty cooling fan modules, wiring or connector issues, or a malfunction in the Engine Control Module (ECM) communication with the cooling fan system.
4. Is it safe to drive with the P135D code on a 2018 GMC Sierra?
Driving with this code may be unsafe if the cooling fan is not functioning properly, as it could lead to engine overheating. It's best to address the issue promptly.
5. How can I diagnose the P135D code on my GMC Sierra?
Start by inspecting the cooling fan wiring and connectors for damage or corrosion. Use a diagnostic scan tool to verify the fan module communication and check for updates to the ECM software.
6. Can a faulty cooling fan module cause the P135D code?
Yes, a faulty cooling fan module is one of the primary causes of this code, as it may fail to send or receive proper status signals.
7. How do I fix the P135D code on a 2018 GMC Sierra?
Repairs may include replacing the cooling fan module, repairing damaged wiring or connectors, or reprogramming the ECM if necessary.
8. Will clearing the P135D code fix the problem permanently?
No, clearing the code will only remove it temporarily. The underlying issue must be repaired to prevent the code from returning.
9. Can a software update resolve the P135D code on my GMC Sierra?
In some cases, an ECM software update from the dealership may resolve communication issues that trigger the P135D code.
10. How much does it cost to repair the P135D code on a 2018 GMC Sierra?
Repair costs vary depending on the issue. Replacing a cooling fan module can cost between $300 and $600, while wiring repairs or ECM reprogramming may cost less.
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