Used a cable toner and probe to narrow it down to the blue bcm connector on the body hardness. Made an extension for the continuity tester and found which pin. Any idea?Is it the backup light wire?
If it is it will hook to the engine to body harness connector.
I have this labeled coolant tankThere is a light green that goes to your coolant level connector. Do you still have a coolant level connector?
You could Look into a bench harness too worst case, I know efi connection has a few for chevy engines.ZZP won’t ship my turbo kit and items on that order until I send them my ECM file for them to calibrate. Theoretically, I should be able to grab a piece of steel and bolt all of the grounds from the harness and engine to it, connect up the battery and have power to the OBD2 and ECM to pull the file, correct?