I have the same leak i think.
It is the engine to heater hose, my (tear/rip in hose) leaks exist just behind the clamp.
I'm having difficulty replacing this because access to the engine side of the hose is difficult.
I drained some of the radiator coolant so the the leak does not happen
My Question:
Do I have to remove the airbox, throttle body and intake manifold to get access to this hose anyone? Is it possible to get access from the top or underneath of the engine?
Much appreciated.

Paul
Calgary

2005 Chevy Aveo 1.6L Manual.