When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
GM used to sell a kit to repair that setup. I've since seen that same kit on a Help rack. It is an actual steel fitting (not die-case OEM junk), seal and clip.
Sorry, I forgot to mention it's the 2.8L V6 engine. It threads onto the intake, then goes toward the passenger side where the heater hose attached to it. Also, the 2 hoses from the throttle body connect to it as well.