Question about 2007 Chevrolet TrailBlazer SS

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Humming noise from engine fan

I am having 2008 LS TrailBlazer , and having problem below :
humming noise from engine fan when driving at normal speed from zero to 80 KM/H , mainly in the 1st , 2 , and 3rd gear when A/C is on in the mid day in the heat time also noted that issue is a company with engine low power.

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  • moamen_saber Jun 20, 2009

    Thanks for your reply, I visited my dealer today morning , he is confirming that the sound I am having is normal , which is no making sense for me.

    On other hand , I have friend of mine who bought the same care in the same day I bought mine , now his car is double mileage than I have (my car mileage is 16,000 KM) , in additional on the same humming noise from the fan , the car is making black smoke. I am seeing the my car future on his car

    Could you please advise whether fan clutch issue can drive also to have black smoke form the exhaust ?

  • moamen_saber Jun 21, 2009

    I am not having the engine light on , in main time the windy noise still coming from the engine area ( from the fan ).

    I am looking for final consultation for my issue to be able to discuss it with my service provider , and I do appreciate if you can help me for that.

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The trailblazers have a issue with the fan clutch. it normally has to be replaced. ide take it to a dealership. its not a easy task to replace the fan clutch if thats the problem.

Posted on Jun 18, 2009

  • josh Jun 20, 2009

    im not a 100 percent sure. when a fan clutch goes bad on that model it will normally turn on the check engine light. because its electrical. black smoke is from the engine running rich with fuel. so if the check engine light is on from the fan issue it could be causing ur other systems to not be functioning correctly

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PROCEDURE 1
EVAPORATIVE EMISSION SYSTEM LEAK MONITOR
Inspection Conditions
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PROCEDURE 3
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Inspection Conditions
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