Looking for ECU wiring diagram for a 2003 Yukon Denali big block engine.

[yelcab2]

Hi
I am looking for a pin out for a 2003 Yukon Denali big block engine. I have issues with the Knock sensors code. Sensors were replaced but code comes back. I want to scope out the signals and see if there is a broken wires someplace.

Can you point to a schematic, a wiring diagram, or simply pin numbers for the two sensors, and where to find the ECU?

 

[Mudsport96]

https://lt1swap.com/2004vortec_pcm.htm

 

[Mudsport96]

Also has a link for download on the page