How do I know if I have a fan clutch?

Electronic types might freewheel, but most fan clutches should spin with a little effort. If the fan spins more than three times, you may have a bad fan clutch. If the fan doesn’t spin at all, the bearing may be seized.

Are there any problems with the Chevy Trailblazer fan clutch?

After a few minutes of searching on the internet it is apparent that my problem is the fan clutch, TSB 060602003, NHTSA 10019510. It appears that thousands of owners are having the same problems and have been for years but there is still no recall.

Why is my Chevy Trailblazer making a ticking sound?

Through research online, the ticking sound is directly related to the fan clutch failure many gm Trailblazer and envoy owners have experienced. The fan operates at 100% due to the fan clutch failing resulting in loss of power. I too have experienced what is described by many as the “lear jet” sound.

What are the symptoms of a bad or failing fan clutch?

As the fan clutch is a cooling system component, any issues with it can cause overheating and other issues. Usually a bad or failing fan clutch will produce a few symptoms that can alert the driver of a potential issue.

Why is my cooling fan not working on my Trailblazer?

Everytime my 2006 Trailblazer would be driven in the rain the check engine light would come on. The last time it would not go off so I took it in and they told me it was the cooling fan motor. While finding someone to work on it I discovered this is very common on this vehicle and it was 700. 00 to repair.

How does a fan clutch work on a Chevy?

How to Test a Fan Clutch on a Chevrolet. A fan clutch is the assembly that your engine cooling fan rides on and that tells the fan when to turn on and off. A central core, which locks and unlocks based on the temperature, allows the fan to spin with the engine crankshaft or freewheel on its own.

When to know if your car fan clutch is binding?

Activity that’s louder than normal may indicate binding. A binding fan clutch will typically be accompanied with warm air flow from the A/C, since the fan isn’t turning the way it should be. Start your vehicle and listen for the fan to engage. Give the engine a little time to warm up. After 4-5 minutes, the fan clutch should come to life.

What’s the best temperature to test a fan clutch?

Make sure your new fan clutch is the same type as the original. It’s possible to upgrade from a non-thermal clutch to a more efficient thermal model, but not the other way around. Keep your engine temperature below 210 °F (99 °C) while you’re running your tests to prevent it from overheating.