checking in from Dallas, tx. found this site while searching the web for some maintenance info on my wife's '01 GTP. we purchased the car new in mid-2000. it's been a great car eventhough we have had some typical GM issues. my wife still loves it even after nearly 100k miles. she's not ready to replace it (we can't afford to anyway) so I'm doing my best to keep it in good shape for her.
her GTP is a dk. blue 4-door with charcoal grey interior, Bose stereo and a sunroof. no major mods, but I did install a Thrasher shift kit, smaller s/c pulley and CAI back in 2002. also replaced the O2 u-bend and the resonator with a 2 1/2" straight pipe about the same time.
the car runs and drives great but the mileage is starting to catch up to it. current maintenance issues:
- driver-side inboard CV boot slinging grease
- front hubs starting to loosen up a little
- A/C compressor has the "death rattle" (disconnected clutch solenoid to prevent compressor siezure)
fortunatley it's still cold here in Dallas. 
Originally Posted by TurboTrav
that was 7 or 8 years ago and I don't remember. I purchased the pulley from Thrasher and I think it was just one size smaller than stock. I remember it was the smallest size you could supposedly run without having to upgrade the injectors. since it's my wife's car, I never really planned to go crazy with the mods - just wanted liven it up a little over stock. those mods have worked well for nearly 9 years now. 
