It's in the 3.4 DOHC section; so I'm assuming that engine.
Are you talking about the cam gear itself? (Apparently GM calls it s sprocket so, yeah)
https://www.justanswer.com/uploads/d...211935_ask.gif
I'd try getting the tool and heading back to the junkyard. You should be able to get to it in the car.
Here's the tool:
https://www.ebay.com/i/282658848034?...D1376819489944