Pros
The work in Grand Rapids is very challenging. GE as a company is very good about providing corporate information to it's employees. GE also attempts to allow employees to move around within GE if you don't find your current job challenging. Grand Rapids is a wonderful place to raise a family within Michigan (even though the unemployment rate for the state is the highest in the nation).
Cons
Grand Rapids was recently acquired (2 years) from Smiths Aerospace and is still in the initial growing pains cycle. The management here is not gotten into the mainstream GE philosophy of openess. The rewards (i.e., pay increases) here are very low compared to the US as a whole. The management here seems to think that everyone that is working here is here to stay, and don't provide financial incentives to keep employees here. The Work/Life balance is poor here because scheduling is not something management does well. Manditory OT (albeit with pay) is the norm here.