We just recently started having starting problems. Replaced battery about 2 months ago, starting problem went away. Now it seems as if the neutral safety switch may be going out. Car starts in Park if shift lever is wiggled and in neutral gear, but seems to drag a lot. I also suspect possible starter problem. How hard is it to replace neutral safety switch?, as my Chilton repair manual is not the best. I have worked on a lot of cars in the last 53 years but never a chevy or cadillac.