Originally Posted by Brandonnye

Hey guys! So I'm having some issues with my Z, closed loop bank 2 specifically. I had the ecm replaced thinking that would fix the problem but unfortunately it didn't. My next option, I think, is to go through the wiring harness and look for something shorted within it. Does anyone have the wiring harness schematic so I could pin in straight to the ecm clip to find which wire or wires I would need to replace? Or if anyone has any other ideas of what could be causing the closed loop

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