Question about 2005 Chevrolet TrailBlazer

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Makes a labored sound when accelerating; coming from area near fan/altenator. Suspect maybe one of the pulleys (tension, accesory, altenator, idler?) Also, notice decrease in gas mileage. Accelerates fine, no slipping; just labored noise.

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  • pskinner Jul 17, 2009

    Goes with same question from same person; FYI ran computer and no codes returned


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Idler pully & or water pump also the alternator bearing will do this
fanbelt may have been too tight!
when belt is off check it again as it could also be the harmonic ballancer on the front of the crankshaft or a worn KEYWAY that locates it

Posted on Jul 17, 2009

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