AutoCodes – GMC – P0526 2017 GMC Sierra

P0526 2017 GMC Sierra Code - Cooling Fan Speed Sensor Circuit

Quick Answer

The Engine Control Module (ECM) uses the cooling fan speed signal in order to determine the actual fan speed in relation to the desired fan speed. Common causes include Faulty Cooling Fan Clutch Assembly, Cooling Fan Clutch Assembly harness is open or shorted, Cooling Fan Clutch Assembly 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
P0526 2017 GMC Sierra indicates Cooling Fan Speed Sensor Circuit.
Common causes
Common causes include Faulty Cooling Fan Clutch Assembly, Cooling Fan Clutch Assembly harness is open or shorted, Cooling Fan Clutch Assembly 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 319
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 02, 2022
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Code P0526 2017 GMC Sierra Description

The Engine Control Module (ECM) uses the cooling fan speed signal in order to determine the actual fan speed in relation to the desired fan speed. The ECM uses the cooling fan speed signal in order to reduce the cooling fan noise and maintain the powertrain cooling requirements. The ECM supplies a 5-volt reference and low reference circuit to the clutch hall effect sensor in the cooling fan clutch. The hall effect sensor returns a signal pulse through the signal circuit in response to the reluctor track, which is located inside the fan clutch. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the cooling fan speed signal is greater or less than a predetermined threshold.
OBDII Code P0526 2017 GMC Sierra - Cooling Fan Speed Sensor Circuit - AutoCodes.com
P0526 2017 GMC Sierra Code - Cooling Fan Speed Sensor Circuit

What are the Possible Causes of the DTC P0526 2017 GMC Sierra?

  • Faulty Cooling Fan Clutch Assembly
  • Cooling Fan Clutch Assembly harness is open or shorted
  • Cooling Fan Clutch Assembly circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0526 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 P0526 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 P0526 2017 GMC Sierra code?

Need more information on how to fix the P0526 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0526 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 P0526 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P0526 in a 2017 GMC Sierra related to the cooling fan speed sensor circuit?

Common symptoms include the cooling fan running at higher or lower speeds than normal, engine overheating, and the Check Engine light illuminating.

2. What are some possible causes of the OBDII code P0526 in a 2017 GMC Sierra?

Potential causes include a faulty cooling fan speed sensor, damaged wiring or connectors in the cooling fan circuit, a malfunctioning cooling fan control module, or a problem with the engine coolant temperature sensor.

3. How can I diagnose the OBDII code P0526 in my 2017 GMC Sierra?

Diagnosis typically involves using a scan tool to retrieve the trouble code, inspecting the cooling fan speed sensor and related components for damage, checking the wiring and connectors for connectivity issues, and testing the cooling fan operation.

4. Can I continue to drive my 2017 GMC Sierra with OBDII code P0526 present?

It is not recommended to drive the vehicle with this code present, as it can lead to engine overheating and potential damage. It is best to address the issue promptly to avoid further complications.

5. What are some repair tips for fixing OBDII code P0526 in a 2017 GMC Sierra?

Repair tips may include replacing the cooling fan speed sensor, repairing or replacing damaged wiring or connectors, testing and replacing the cooling fan control module if necessary, and ensuring proper coolant levels and system operation.

6. How much does it typically cost to repair OBDII code P0526 in a 2017 GMC Sierra?

The cost of repair can vary depending on the specific cause of the code and labor rates in your area. Costs may include parts such as sensors or modules, as well as labor for diagnosis and repair.

7. Can a DIY enthusiast fix OBDII code P0526 in a 2017 GMC Sierra?

While some aspects of diagnosing and repairing this code may be within reach of a DIY enthusiast with the right tools and knowledge, complex electrical issues or component replacements may require professional assistance.

8. How urgent is it to address OBDII code P0526 in a 2017 GMC Sierra?

It is important to address this code promptly to prevent potential engine overheating and damage. Ignoring the issue can lead to more costly repairs down the line.

9. Will resetting the OBDII codes make OBDII code P0526 go away in a 2017 GMC Sierra?

Resetting the codes may temporarily clear the Check Engine light, but if the underlying issue causing code P0526 is not addressed, the code is likely to reappear once the problem is detected again.

10. How can I prevent OBDII code P0526 from occurring in my 2017 GMC Sierra in the future?

Regular maintenance, such as checking cooling system components for wear or damage, ensuring proper coolant levels, and addressing any issues promptly, can help prevent the recurrence of code P0526.

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