Re: 2002 Tahoe - knock sensors

Posted by Sprint 6 on August 13, 2019 at 07:07:26 from (107.77.208.218):

In Reply to: 2002 Tahoe - knock sensors posted by dhermesc on August 13, 2019 at 06:44:52:

The intake does have to come off, not hard to do. No coolant or distributor involved, pull it off complete with throttle body and fuel rail. The holes the sensors are in fill up with water, then the water gets forced up the wiring pigtail. The sensors and the harness will be green and need replaced. Hopefully the water has not made it into the main truck harness and down the PCM. I have had to make new runs of wire clear to the PCM due to water wicking clear down and shorting things out.

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