a truck is made from steel to make it strong and stainless steel so that it won't rust away easily.
CA through a joint venture with GM
Gm trucks are made all over America. Most of the plants have closed due to the economy but you can still find many of them open and running.
The Chevrolet 490 Light Delivery.
No they are actually made in Detroit, Michigan. They did make some light trucks in Canada until May 2009 when the plant was closed.