Yeah, clearly that isn't a GM schedule.
I generally suggest two options - basic (factory) and adequate (our recommendation). Some call the latter premium, but I really believe it is what the vehicle needs and I am not overselling for the sake of my own profit, then it is adequate.
My personal opinion - GM's current maintenance and simplified maintenance programs border on vehicle neglect and it will come back to bite them ... but hey who am I ... I mean every GM idea in the past has been such a winner for dealers, customers and them right?
Besides, any shop that doesn't make it clear the difference between their suggestions and the factory's requirements deserves to get reamed by a customer.
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** Rob, Editor Dealersedge/WD&S **Help is only a message post away!
robc@dealersedge.com