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  1. #1

    Exclamation Engine Knock Sensor help!

    i have a 2003 silverado 1500 5.3l and i need to replace the knock sensors under the intake manifold. i would like to replace them my self and get to know my truck a little better.
    What parts do i need to get like gaskets wires knock sensors etc...
    is there a website with instructions on how to remove the intake manifold and replace the sensors?
    2003 Chevy 1500 5.3l VORTEC

  2. #2


    Autozone has some repair info online. I bought a full factory service manual on CD ROM from Ebay for about $15. That's the only way to go, in my opinion. That way, you'll always have the info you need.
    Good Luck and God Bless

  3. #3

  4. #4


    At least an intake gasket, depending on the mileage id get a throttle body gasket while ur at it. There not that difficult to replace just time consuming but in my opinion theres no better way to learn than by doing it yourself! you shouldnt need any wires unless you find some bad ones once you pull the intake. Good luck!
    Redneck Rucker

  5. #5


    Get some automotive silicone, after you install the new sensors run a bead of silicone around the sensors rubber gasket to build a dam around the sensor so water won't run in.

    2005 Chevy Silverado Z71 Crew Cab
    6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. Rancho skid-plate.
    17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires
    4.10 PercisionGears w/factory locker, T/A Performance rear-end cover
    Banks CAI intake, ported throttlebody, JBA coated headers, over-sized Magnaflow cats, Magnaflow cat back exhaust, Diablo tuned
    B&M aluminum deep transmission pan
    Warn brush guard w/Warn 9.5 XP winch, PIAA bulbs, Line-X bedliner, AWS Black tool chest, Extang tonneau cover
    Weather Tech floor mats
    Cover-Craft seat covers
    Dash mat cover
    Formula One window tint
    One black Lab in rear seat.

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