GM designed it a certain way that alot of people dont know about, and its not a coincidence. When you're at TDC on the compression stroke, the window ring's locator tab will line up with the cap's locating notch, which will line up with the lockdown bolt. I can pull and reinstall/adjust a cam sensor in 5 minutes. And it works. Seems that people who complicate this procedure, usually have money to make on it in one way or another. Make it too hard to do yourself, and you'll have to buy this gizmo, or this manual, or go see the dealer mechanic, etc. I have to give credit where credit is due. Lou Czarnota showed me how the tab lined up with the cap notch, and a couple weeks ago, I noticed that both lined up with the lockdown bolt.
Someone should make a sticky of this, cause it would end alot of needless headaches and curiosity about setting a cam sensor.
