My dear friends ! Time passed. i have all needed information about knocking sensors.
on hummer h3 v8 5.3l they are located on both sides of engine. in the botton part of it. Left knocking sensor can be reached very easy.. it have a cylinder foil-coated cap on it.. very easy to find. right is also can be found easy, but harder to remove- but not very hard. it also have cylinder foil-coated cap on it. to remove sensor and unplug harness connector you must remove cup first. My car gives me a sensor 2 bank 2 high output. i bought new sensor (sensor 2 - right side) and change it. It is not help me to fight error.. i just trow money to basket ... sensor was in good condition. error does not desappear.. I have checked harness connector and found that it rusted... i clean it, solder wires to pins in connector and put it on sensor. error gone
so dumb i am.. i must do it first before buying new sensor
thank you, my friends
From Russia, with love - your friend Sergei
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