[Gmecm] in need of Engine diagram help

[Mike V]

Hi all,
The parts store closed 5 minutes ago, and I just 
pulled a mystery hose off of the 3400 engine in 
my wife's 2001 Chevy Venture Van.
One end connect near the MAF sensor in 
the rubber intake boot.
The engine is up under a cowl, and of couse this
 plastic hose connects on the rearward side 
somewhere.  I've been trying the brail method
 with no luck.  Too tight to even get a small
 mirror back in there.  I really need a drawing
 or a diagram of the top side of the 3400 
60* V6.  One end of the hose connects to 
the flexible rubber boot that connects to the 
MAF and air filter box.  I think the other end
connects to crankcase air somewhere, but I 
can't see back there to connect it.
Any help would be greatly appreciated.
TIA MV