Question about 2004 Hummer H2

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Hi I had a knocking sound in the engine, I check the engine and they said there is a knocking sinsor problem ? what can I do and does this effect the engine ? many thanks

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Scan the ECM (computer) with a OBD 2 Scanner to see if there are any stored codes. If you have a bad "Knock Sensor" a code for it should be stored and you'll know. If there is a code stored for it, replace the sensor, CLEAR the code from the ECM and you'l be ok. But!!! If there are other codes, do the proper repairs to fix them too...

Posted on Sep 04, 2010

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