Unidentified plug.
 

2014 Chevrolet express 1500 passenger 5.3. I’m currently tracing down an open circuit code on my abs motor, and noticed this plug next to the fuse box. Anyone have an idea of it’s purpose?
https://cimg8.ibsrv.net/gimg/chevrol...b1cc40b7d.jpeg
https://cimg9.ibsrv.net/gimg/chevrol...22ee7b7fb.jpeg

electrical schematics are on gmupfitter.com

Its an Aptiv (Delphi) 12110751 connector. This connector shows up in the most recent (2021) wiring diagrams. It shows it as the outside air temperature sensor connection headed to instrument panel. Not guaranteed since the same connector could be used elsewhere. If you have the outside air temperature option that would disprove my theory.

post the code and then i can check the wire colour of the circuit the code set for.

I don’t have a code for this plug. Right now the only code I have is related to an open circuit on the abs pump c0267. It matches the live data of 0 volts read at the pump. I am working on that this weekend but I don’t think it is related to this plug. This plug looks like there is no where for it to plug into so I am thinking it is just an accessory I don’t have. Just curious if that is the case, or if I accidentally unplugged it from somewhere I can’t see.

thanks for that link. That’s a helpful site.

i do not have ambient air reading in the van. It might be that.