Pros
One of the last and truly excellent manufacturing capable corporations in the US. Not that the automobile industry isn't a capable, just their leadership seems to be poor. Top level managers often seem to be well chosen for capability and smarts.
Cons
For all their emphasis on competitive ratings of employees, too often poor performers continually get promoted or protected. This is especially true at the mid-level management level where I've had to work for a good number of total incompetents. There's often an unfortunately high degree of belief that managers can be successful managing without any technical competence. This is fine if you are not in a technical group, but if you are, it's rather unfortunate for those unlucky enough to have to endure it.