Barra is incompetent at leading an auto manufacturer but she was not picked on merits.
The Silverado, in all flavors, is in production. The Bolt is coming back.
One of my sons is working in the Detroit/Hamtramck GM plant where the EV version of the Silverado is assembled as is the Hummer EV. He installs and integrates robotic cells for the assembly line. When he is done there, his team is moving to the Orion plant where the Bolt was assembled to install a vast line for battery manufacturing. The Orion plant, once on the list to be shuttered, has seen a mass expansion for the new lines.
GM also invested nearly $1 billion in a new ICE plant in Michigan to support the line of trucks and SUVs.
Sounds to me like you have sour grapes with GM, that is your issue, but GM is doing fine and is currently out-selling RAMs
.