On the lighter side, the battery in these cars is among the easiest to replace of any I've owned.
Sadly, the truths that should be self evident of anyone who owns one of these cars (or wants to) is that (1) They're all at least 10 years old, (2) Pontiac has been gone for 10 years, (3) Any GM technicians trained on these have long since moved on or retired, (3) A few parts may exist in the GM system but once they're gone, they're gone and your/our main source (for other than common mechanicals) becomes "Pull-N-Save" salvage yards. Reality bites of course and it's pretty much the same for any car 5 years in once the platform has been discontinued, let alone the whole line or make has been dropped.
I'm old and this will likely be my last special interest car. With the goal of educating myself I bought one of these:
GM's documentation has evolved through the decades and is geared to the technician and features cryptic line drawings rather than clearer photos. This disk has as much information as likely exists, but it's clunky and not for the faint of heart. It also requires a fairly recent computer and installs a Virtual Machine running an instance of Windows XP (remember how old these cars are). It does work though and there's a ton of information and (bonus!) the embedded links to related topics work.
Since everything since OBD was first developed requires a scanner, I also bought one of these:
I haven't received it yet so it's usefulness hasn't been proven, but the price point made it interesting to me as opposed to the GM Tech II. I'll let you know.
Good luck everyone. - Mark