Question about 2001 Chevrolet Silverado

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Knock sensor for a 2003 chevy Z71 5.3 L

I am trying to find the location of the knock sensor for my 2003 1500 Z71, with a 5.3 L motor?

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  • Anonymous Mar 24, 2014

    obd code knock sensor

  • Anonymous Mar 31, 2014

    I'm trying to replace the knock sensor but I am unable to find it, can you help?

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These sensors are quiet a problem. They are located under the intake and normally go off because the engine got washed sometimes the water will evaperate and the problem goes away but anymays the intakes gota come off there are 2 of them so i would recomend replacing both while ur at it

Posted on Dec 18, 2008

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They are usually mounted in the passenger side of the block, in the middle of the side of the block just a head of the starter. This is what you are looking for:

Knock Sensor Operation: knock sensor for a 2003 chevy Z71 5.3 L - 0900823d8004ae24.jpgA sensor that signals the engine-control computer when detonation is detected, momentarily retarding ignition timing until detonation ceases.

Posted on Nov 29, 2008

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Posted on Jan 02, 2017

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