Where does General Motors buy steel?

Answer 1

It depends on what branch of GM you are talking about ,what division, and for what purpose it is intended.

for a large part most of the car/truck/suv is farmed out to supplier companys that search out the cheapest local bidder.

The question is really to broad to give you the intended answer with out more exact information

Most of the steel in US produced autos is imported from China.