Your sketch looks good.
It's similar to my example in this thread.
So if it's in your assembly, then you're good to go.
I'm not sure where your method is failing, so try this:
Download and open the zip file in 'Message 7'.
The assembly shows a part file w/the gridlines in it.
Open that part and you will see it is like yours.
Then open the drawing.
After you place a PlanView, you go to the model tree and expand the assembly part down to the gridline part.
Then you expand that part and RMB on the gridline sketch and pick 'Include, Visibility, Display Text'.
That gets your sketch to show up in the drawing view.
It will only show up in a drawing view that is perpendicular to the sketch plane (or at least that's how my older version works).
If in your grid part you add points at every grid intersection, and label them by their location, then you'll have a means to connect to your grid when working in the assembly, or if you Derive it into another part and need to reference the geometry for location purposes. You can see that in my gridline file.

... Chris
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