Here's my problem. I was under my car(2005 SS/SC) last night trying to track down an exhaust leak when I came across a few wires that had been pulled from their plug somehow. The plug goes to a black box right behind the rear axle. It says Delphi on it. Can anyone tell me what this box does?

 

charcoal canister for evaporative emmissions. purge valve if not plugged in; you must have a cel for it.

 

evap canister

 

Alright, thank guys.