Had the Exact same thing /question
Thank you! I just had the exact same problem on my sc after removing the air intake tube & box for MAF inspection last week, for the life of me I couldn't figure where that small hose went or its use.
NOW I KNOW. Just removed the DIS wires and found that part! Thanks for posting the question, the detailed picture made me run to the garage! good luck finding yours, its there-just tough to find and good luck craming that hose back in.
Once againg this site lessens the stress level!