The one up here was producing cheapo sedans for a 1970s marketing plan. As I spend a lot of my life sitting in traffic jams on 8+ lane highways, I have lots of opportunity to check out the cars around me. Not many GM products, anymore. Thirty-forty years ago, most of them were and now it's more like about one in twenty. GM was going to die a natural death a decade ago and it was put on artificial life support by governments on both sides of our border.
This is a prime example of how bail-outs (and tariffs) fossilize inefficiency and stupid. That is why dusting off and re-commissioning obsolete aluminium and steel Mills will never make America great, again ... just backwards , overpriced and inefficient.
The number has been up on that Oshawa plant for some years. The days of the Chevy sedan are done. If you want a reliable, inexpensive sedan, buy a Honda, Hyundai or Toyota. They work when you turn the key.
Being more efficient, is that before or after manipulative software? Gm put the writing on the wall when they moved the Camaro assembly to Michigan last year. The Impala is still popular among the older crowd unfortunately the older crowd aint the boomers anymore.