Brake line corrosion due to salt is far too expensive to be recalled.
Using my 2005 Safari AWD van as an example, the brake lines are not available due to the size/shipping cost of the shaped brake lines. When I replace them, and I will have to because the car spent one year in Denver where Mr. Van met Mr Salt, I will have to buy the bulk tubing, bend it to shape, and swage the fittings and tube ends.
I can hardly wait - - - :-(
You’re correct and that’s why GM is refusing to recall, this would cost them big bucks.