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Knock Sensors


bwilson

Question

My 2000 Silverado 5.3 also has Knock Sensor codes. I replaced my 470,000 mi engine with a 135,000 salvage engine two years ago. Engine runs great but i recently got the Knock Sensor Codes. Replaced both sensors with A/C Delco and replaced harness. Still get codes and they appeared about the same time as P0740 TCC Circuit code. Any connection? Also have Air Bag Light on dash. Could all these be related? ECM?

Thanks

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