My 97 bonneville cranks but will not start. I have replaced crankshaft sensor and camshaft sensor. Fuel pressure is 45 psi, the VATS seems to be working because the security light comes on for a few seconds and goes out. Not sure what else to check??? Please help as I am lost??

Have you checked for spark?

Yes I have spark to all plugs, battery is good, and all electrical is good ie power window, locks, and etc.

Can you hear the injectors clicking?

When will they click? As i crank or with the key to the on position? I will go out and check.

when you crank. If it'* clicking, you have fuel pressure, and spark. Try flooring the gas peddle, and crank it. You may have flooded it. Flooring it will shut off the injectors and clear the cylinders.

Just checked and they click when the key is turned to on

Here'* a write up I did a while back. https://www.gmforum.com/trouble-shooting-test-procedures-141/engine-cranks-but-will-not-start-296982/

I am not sure if the injectors are clicking as I crank but when i had my spark plug tester hooked up I am getting spark plus with the fuel pressure guage hooked up I get good pressure when cranking. I did the dump and still will not start. I also have let it sit a day without me starting it to ensure I did not flood it but still no start.

Where are you located Dcrowder