P135D 2017 GMC Sierra Code - Cooling Fan 2 Status Signals Message Counter Incorrect
Quick Answer
The P135D diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that there is an issue with the Cooling Fan 2 Status Signals Message Counter being incorrect. Common causes include Faulty cooling fan control module: A malfunctioning control module can disrupt the signals being sent to the cooling fan, resulting in incorrect message counters, Defective cooling fan relay: A faulty relay can prevent the cooling fan from receiving the necessary signals to operate correctly, Wiring issues: Damaged or corroded wiring connections can interrupt the communication between the control module and the cooling fan, leading to incorrect message counters. 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 2017 GMC Sierra indicates Cooling Fan 2 Status Signals Message Counter Incorrect.
- Common causes
- Common causes include Faulty cooling fan control module: A malfunctioning control module can disrupt the signals being sent to the cooling fan, resulting in incorrect message counters, Defective cooling fan relay: A faulty relay can prevent the cooling fan from receiving the necessary signals to operate correctly, Wiring issues: Damaged or corroded wiring connections can interrupt the communication between the control module and the cooling fan, leading to incorrect message counters.
- 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 2017 GMC Sierra Description
The P135D diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that there is an issue with the Cooling Fan 2 Status Signals Message Counter being incorrect. This code specifically relates to the cooling fan system in the vehicle. The cooling fan plays a crucial role in maintaining the optimal operating temperature of the engine by dissipating excess heat. When the cooling fan 2 status signals message counter is incorrect, it means that the signals being sent to the cooling fan system are not matching up with the expected values. This discrepancy can lead to improper cooling fan operation, potentially resulting in engine overheating and other related issues.
Common Causes of P135D 2017 GMC Sierra
- Faulty cooling fan control module: A malfunctioning control module can disrupt the signals being sent to the cooling fan, resulting in incorrect message counters.
- Defective cooling fan relay: A faulty relay can prevent the cooling fan from receiving the necessary signals to operate correctly.
- Wiring issues: Damaged or corroded wiring connections can interrupt the communication between the control module and the cooling fan, leading to incorrect message counters.
- Faulty temperature sensor: A defective temperature sensor may provide inaccurate readings to the control module, causing issues with the cooling fan operation.
Symptoms of P135D 2017 GMC Sierra
- Engine overheating: One of the most common symptoms associated with this code is engine overheating, as the cooling fan may not be operating at the necessary speed to cool the engine effectively.
- Increased engine temperature gauge readings: The temperature gauge on the dashboard may show higher than normal readings, indicating a potential issue with the cooling fan system.
- Reduced air conditioning performance: The air conditioning system may not work as efficiently if the cooling fan is not functioning properly, leading to reduced cooling capacity.
- Check engine light: The illumination of the check engine light on the dashboard is a common indicator of a problem with the cooling fan system.
How to Fix P135D 2017 GMC Sierra
- Diagnose the issue: Use a diagnostic scanner to retrieve the trouble codes and perform a thorough inspection of the cooling fan system to identify the root cause of the problem.
- Test cooling fan operation: Check the cooling fan's functionality by applying power directly to it to ensure it spins freely and at the correct speed.
- Inspect wiring and connections: Examine the wiring harness and connections for any signs of damage, corrosion, or loose connections that may be affecting the signal transmission.
- Replace faulty components: Replace any defective components such as the cooling fan control module, relay, or temperature sensor as needed to restore proper operation.
- Clear codes and test drive: After completing the repairs, clear the trouble codes from the vehicle's computer and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P135D 2017 GMC Sierra
The typical repair costs for addressing a P135D code on a 2017 GMC Sierra can vary depending on the specific cause of the issue and the parts and labor required for the repair. In general, the cost of replacing components such as the cooling fan control module, relay, or temperature sensor can range from $200 to $500, including parts and labor. However, it's important to note that the actual cost may vary based on factors such as the location of the repair shop, the vehicle's make and model, and the extent of the repairs needed. Additionally, diagnosis time and labor rates at auto repair shops can range from $80 to $150 per hour, with rates potentially higher at dealerships or in metropolitan areas. It's recommended to obtain quotes from local repair shops for a more accurate estimate of the total repair costs.
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Frequently Asked Questions about P135D 2017 GMC Sierra Code
1. What does the OBDII code P135D mean for a 2017 GMC Sierra?
It indicates the cooling fan 2 status signals message counter is incorrect, meaning there is an issue with the communication or operation of the secondary cooling fan.
2. What are the common symptoms of code P135D in a 2017 GMC Sierra?
Symptoms may include engine overheating, abnormal fan operation, or the cooling fan failing to activate when needed.
3. What causes the P135D code to appear in a 2017 GMC Sierra?
Causes can include a faulty cooling fan 2 module, wiring issues, communication errors between the fan and the ECM, or a malfunctioning ECM.
4. Can driving with code P135D cause damage to my 2017 GMC Sierra?
Yes, prolonged driving with this code can lead to engine overheating, which may result in serious engine damage.
5. How do I diagnose the P135D code on a 2017 GMC Sierra?
Use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage, and test the cooling fan 2 module for proper operation.
6. What repairs can fix the P135D code on a 2017 GMC Sierra?
Repairs may include replacing the cooling fan 2 module, repairing damaged wiring, or reprogramming or replacing the ECM if necessary.
7. Is the P135D code related to other cooling system issues in the 2017 GMC Sierra?
It can be related to other cooling system faults, such as a failing primary fan or temperature sensor issues, but specifically involves cooling fan 2 communication.
8. How much does it cost to repair code P135D in a 2017 GMC Sierra?
Repair costs vary depending on the issue, but replacing a cooling fan module can cost $200–$500, while ECM repairs could exceed $1,000.
9. Can I reset the P135D code without fixing the problem in my 2017 GMC Sierra?
Resetting the code without addressing the underlying issue may temporarily clear it but won’t resolve the problem, and the code will likely return.
10. What tools are needed to fix the P135D code on a 2017 GMC Sierra?
Tools may include an OBDII scanner, multimeter for electrical testing, and basic hand tools for replacing components or repairing wiring.
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