2007 Tahoe coolant reservoir sensor? - SOLVED

[nitro498]

2007 Tahoe rebuilt 5.3. Putting this Tahoe back together after 4 years. We don’t remember what goes here. While filling the reservoir we noticed water leaking from the bottom of said reservoir. Thanks for lookin*!

 

[Fless]

Overflow. See https://www.tahoeyukonforum.com/threads/coolant-leak-from-reservoir.139646/

And this one: https://www.tahoeyukonforum.com/threads/phantom-coolant-leak.144485/post-1821737