CEL - Knock Sensor code (low voltage input)

WScott404

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What's up guys?

I was wondering if anyone else has had this problem before...

I have a '03 Tahoe Z71 (5.3 Flex) and I've had this Knock sensor code active for quite some time - I've even changed both knock sensors, and the knock sensor wire harness, but I still have the "low voltage input" CEL... What am I missing? Should I look into the ignition module, or is there a better (cheaper) route?

Thanks,
I appreciate any and all input!
 

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