Question about 2002 Chevrolet Avalanche

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LOCATION OF KNOCKSENSOR ON 2002 CHEVY AVALANCE

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  • yadayada
    yadayada May 11, 2010

    side of engine block in the water jacket, but knock sensors very seldom if ever are the problem, I have replaced zero in 20 years of emission related work, what is the code?

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Bad news is your knock sensor is under the intake manifold. The good news is this is a fairly easy fix as far as removing the intake goes. I assume you have the 5.3 engine? In the many cases where i have replaced the little sensors the best thing to do is replace them both while you are under there along with the harness that connects them to wiring on top of the engine and put a dam of silicone around the sensor boot so that they dont go bad again because the main cause of failure for these sensors is water intrusion into the little hole in the intake valley where they reside. Thanks for using fixya!! best of luck!!

Posted on Mar 15, 2009

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