What does engine code P1481 mean?

What does engine code P1481 mean?

Faulty Fan Clutch Assembly
Rowefast answered 5 years ago. Chevrolet p1481: Faulty Fan Clutch Assembly – Fan Clutch Assembly harness is open or shorted – Fan Clutch Assembly circuit poor electrical connection.

Is a TrailBlazer fan clutch reverse thread?

this is not a reverse thread. If all else fails, there is a tool made specifically for this job that you can buy, borrow, rent or steal. It is a wrench that attaches to an air hammer…it will loosen that nut instantly.

What size is the fan clutch nut on a Chevy TrailBlazer?

The Chevy TrailBlazer clutch nut size iS36mm hex. This means that You will need to use a 36mm socket to be able to remove the main clutch nut. In general You will need to use a 1/2″ drive socket and ratchet to get a 36mm nut off.

Does a TrailBlazer have a LS engine?

All 5.3L V-8s are equipped with DOD. Standard on all TrailBlazer and TrailBlazer EXT models, whether two- or four-wheel drive or in LS or uplevel LT trim, is GM’s advanced Vortec 4200 4.2L inline six-cylinder engine. Rated at 275 horsepower (205 kw) and 275 lb.

How do I know if my fan clutch is going out?

Symptoms of a Bad Fan Clutch

  1. Engine overheating at low speed or when stopped is the most-common fan clutch failure symptom.
  2. Insufficient heat in winter is another common problem but caused by the opposite fan clutch failure.
  3. Excess fan noise at high speed is caused by the same problem, a seized fan clutch.

How can I tell if my fan clutch is working?

To confirm the diagnosis, start with this simple test: Spin the fan as hard as you can on an engine that has not been started that day. If the fan rotates more than five times, you can bet the clutch is bad. You should feel some resistance and the fan may spin up to three times, depending on the ambient temperature.

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