yes - are you supposed to grip it with pliers and rotate?

I tried that but didn't move....could the cap be unthreaded and need to popped off with an upward blow? Or punctured with a screwdriver and pried up?

surprised at this design..

Hi I've got a 2013 Buick Verano 2.0 and the shop manual shows the desiccant bag on top/side of the condenser. I don't see how to get the old one off as there is nothing to grip to rotate it off. It is just a "reverse dome" that I am seeing. My aftermarket replacement has a bolt head on the...