So I went to Advance Auto today and picked up a new Fuel Pressure regulator for my GT.. everything looked the same from the quick glance under the hood to the new part, so I went home and let the car sit for a few hours to cool down. I proceeded to de-pressurize the fuel rail and remove the regulator... once i get to out and put it side to side with the new one I realized the new regulator was way smaller than the new one and would not fit. so now I'm stuck so I call a Taxi and go back to Advance with the old Regulator in hand. the Parts guy looked a little confused as to why these 2 parts were different. so after a few minutes of trying to figure out what is going on he looks up a fuel pressure regulator for a 2000 GTP .... and that one was very similar to my old regulator.... same size and configuration ..... So my question is: was the that Advance computers just wrong or does my car have something weird going on?

_________________

Probably not.
The aftermarket sometimes likes to change things whereas GM likes to standardize them.

_________________
2005 GT owner [Non S/C] with a "big DIC".
Two years later and I still love the car.
Thanks Pontiac...Bleen is keen!

while your doing this, what does it take to change?? one of the few things i have not had to change and i will need to swap one onto my modded rails in the spring..

_________________

2001 white gt coupe
1997 green gt sedan
2002 40th GTP

^^^You'll need a pair of snap ring pliers to swap it out; the last time I replaced mine, I actually had to get one from the GM dealer. As the parts guy opened the AC Delco box he said, "Let's hope it's not a Delphi." because they were being recalled. Luckily it was a Bosch, and it's been starting great every time.