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symptoms of bad knock sensor

This is a discussion on symptoms of bad knock sensor within the Technical / Maintenance forums, part of the General Discussion category; my 04 z71 has had an engine light since i got, had it checked out and its a bad knock ...

  1. #1
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    symptoms of bad knock sensor


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    my 04 z71 has had an engine light since i got, had it checked out and its a bad knock sensor, what effects does it have on performance mileage etc.? would like to know if it "needs" replacing thks

  2. #2
    ballz2thewall budweiser's Avatar
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    Re: symptoms of bad knock sensor

    i have 2 bad knock sensors, truck is running like hell, no power off the line and excessive fuel consumption

  3. #3
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    Re: symptoms of bad knock sensor

    yeah i know there suppose to be some torque management but i drove a 05 suburban with no engine problems and it had more balls than my truck!

  4. #4
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    Re: symptoms of bad knock sensor

    When a KS code is set the PCM retards timing to protect the engine. Fuel economy and performance are affected. Get it fixed.
    04 K1500 Silverado EXT 3:73 gears, 5.3L 265/75-16,Pace Edwards tonneau,

  5. #5
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    Re: symptoms of bad knock sensor

    ok defiantley gonna do that probably this weekend what would i need the sensor, intake gasket, rtv, what else?

  6. #6
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    Re: symptoms of bad knock sensor

    Two sensors, pigtail,intake gasket and there is a TSB (search) and intake gasket set.

    Quote Originally Posted by helix View Post
    ok defiantley gonna do that probably this weekend what would i need the sensor, intake gasket, rtv, what else?
    04 K1500 Silverado EXT 3:73 gears, 5.3L 265/75-16,Pace Edwards tonneau,

 

 

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