Does it unscrew? Is it a quarter turn? Do you need a specialy tool? I'm working on a 99 GM 3.4. Same motor as any other 3.4 GM (grand am) plus/minus a few model years. It looks like it's directly under the "Top Manifold" (it looks like an intake manifold, but it's really a "don't dig this far" piece. Not quite sure WTF I'm doing, but I'm thinking about replacing the #5 F.I. that is bad.

 

Once you unbolt the fuel rail the FI's are just seated with an oring. You just pull them out. Sometime putting a little wd-40 on them before helps. There are ways to check a FI.....I wouldn't just replace it unless you know it is bad.

 

pull