Be carefull with step 9. All I have ever done was to hand tighten only.
Removing ring in step 5 has also been by hand. Not sure about being able to get the new ring any more. I've had an extra one for years just in case. Jim B recamendation. Once this ring is off the GM parts self,there gone.
BTW, good write up. I still remember my first time with filter change