Hey all, I have a 2016 GMC Terrain which is leaking coolant. I bought an a radiator leak stop which says pour directly in radiator reservoir (which I don’t believe this car has) so then says to pour it directly in overfill tank? Im not sure where the overfill tank is!! I saw a YT video where someone disconnected a house and poured it in but Im not sure if it’s the hose I’m looking at. I will post a picture and circle what I believe is the hose I can disconnect to pour it in, I appreciate any tips I have to get the kids to school tomorrow safely to then try and get this fixed and have no other form of transportation. Ty!!