2007 Chevy Classic Knock Sensor Code - Bad PCM or Bad New Part? Part II

In a previous video, we looked at this 2007 Chevy Classic that came in with a knock sensor code. As mentioned before, another shop had already replaced the knock sensors and the harness, but the code came right back. After further testing, we found that the knock sensor signal drops out only when the PCM is plugged in, which raises the big question. Is the PCM actually at fault, or are we dealing with a bad “new” part? In this video, we dig deeper into the diagnostics to make sure we’re making the right call instead of guessing and throwing parts at it.

Part I -    • 2007 Silverado Knock Sensor Code Returns A...  

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Disclaimer:
Due to factors beyond the control of South Main Auto Repair, we cannot guarantee against unauthorized modifications or improper use of the information provided in this video. South Main Auto Repair assumes no liability for property damage or personal injury resulting from the use of any tools, equipment, chemicals, lubricants, or information presented. We strongly recommend following safe practices when working with power tools, automotive lifts, jack stands, electrical equipment, blunt instruments, or any other tools and equipment shown or implied in this video. No information in this video creates any express or implied warranty or guarantees any particular result. Use this information responsibly and at your own risk.

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