1. I doubt GM is in the plastic injection molding processes. That would be a Tier 1 supplier, not done in-house so to speak.
2. It takes months to build a plastic injection mold. That could be shortened, yes. But the supply chains for key materials are shaky right now. Better move on this yesterday.
I used to work in sales in a related area of manufacturing -- metal stamping -- and as such I was in/out of a lot of tool & die shops. A few of those built molds as well as stamping dies. Dirty little secret: Most of those shops I called on are long gone.
We do aluminum molds in days.....can’t get near as many shots, but just make lots of molds.
There are things to do to expedite everything...but I agree with you on typical lead times and material availability 100%.