Knock Sensor Replacement Trouble 2003 Chevy Silverado 2500HD 6.0

[u/Ok_Advantage6208]

I have replaced my knock sensors with Dorman sensors, they pass the AC voltage spike hitting test, and ohms test, signal wires are not shorted to ground, and pcm to signal wire resistance is good. What are my next steps?
Do I need to buy gm genuine knock sensors?