If you are having a problem with your grand prix starting up everytime but only runs for a few seconds no matter the rpms. If you have checked the mass air flow sensor and still get nothing better from it try bending pin 85 on the fuel pump high speed relay if it runs after that then it is the fuel pump resistor. Takes 20 min to change out. Its located on the passenger side frame rail behind the windshield washer tank. White horseshoe looking item. If cracked or any chunks broken out of it then its bad. Took me 2 days to figure it out and many dollars trying different things other ppl told me to do
