Unplugged Connector near brake reservoir 2008

It may be from the heated windshield washer fluid unit if your vehicle was originally equipped with it. They were recalled and removed by the dealers.
Mine was removed but I researched the manufacturer that GM used and they had a replacement unit that was plug and play that I bought and installed. Works great!
Tim

I put one of the aftermarket replacements in my 08 too, I loved that feature. I wish I had one in my 15 clave.