Hope I am describing this okay ... if not, I will snap a picture.

My truck is a 1997 Blazer with the 4.3 Vortec. While in the process of changing my PCV valve, the old brittle elbow that connects the long tube from the PCV valve back over to the valve cover (where vacuum originates) broke. I wanted to take the part with me to the auto parts store to find an elbow that fit and in the process of removing the plastic cab that you twist to remove the vacuum connectors from the valve cover, one of the tabs broke. I found the elbow but have no idea what the other part is even called.

It has an o-ring and you push it down into the housing, then twist it to catch some tabs. It has two vacuum connectors. One larger one coming out the top that goes over to and elbow and then over to the PCV valve. The other comes out the side and connects to a vacuum hose that goes over to a T then on to the vacuum ball attached to the hood, HVAC, 4WD, etc.

Any help would be appreciated.

 

Sounds like a question I asked a while back, same thing basically happened to me although mine broke when it was cold out. Here is what you need, it is GM PART # 1255275, you can find it on gm parts direct if you want to order it, or get it at the dealer.

 

Not sure if it's kosher to post links to other sites here but I found a site that has excellent diagrams of pretty much every part imaginable, with GM part numbers. At that point I was able to call the dealer and go pick one up.

Thanks!