Im currently swapping an 8.1L into my K5 and have every wire figured out except for 1. The wire that I cant find in any of my diagrams is pin 38 on the red (C2) connector. It is not shown in any 8.1L diagrams i can find and it seems to not be used in LSx applications. Does anyone know what this pin is used for in my application? My motor is out of a 2001 express 3500 with the 8.1L 4l80e setup.

thanks

 

Connector Part Information: 12191110 – RED C2 80 Pin Connector
Pin…………Wire Color…………Circuit No………….Function
38…………….PPL………………...….30…………….Fuel Level Sensor Signal

 

Great, i dont know why it doesnt show in the stuff i have but that must be what it is since i cant find a fuel sensor signal in my diagrams.

thanks again

 

He is correct

here is the wiring diagram