1999 Grand Am GT cranks no start

You have fuel and starting fluid to the engine, so that might not be the problem. You have spark at each cylinder, so that might not be the problem. But it could be timing to the cylinders, which might indicate a faulty cam or crank sensor. Or it might be quality of spark, in that it's not powerful enough to ignite the fuel, which might be caused by faulty coils of defective igniter. Even though you hear the fuel pump, it might not be strong enough at the rail to deliver enough fuel pressure to get the engine started, though with added starting fluid, this might not be the case..... I suggest you have a mechanic diagnose this. It'll cost a couple hundred bucks, but then you can use his report to direct you in doing repairs yourself.

Do the basics first, compression test, fuel delivery, spark/timing. These are known to have ignition module problems also.

The OBDII reader I have was reading timing advance during testing, is it normal for the reading to bounce around 10-20 degrees during cranking? I read that rpm info comes from the crank sensor, does that mean its the cam sensor or ignition module? I intend to spend the $15 dollars or so it takes for a cam sensor and trying that and renting a fuel pressure guage and I'll get back on it.

Maybe you have too much fuel (flooded). Hold the accelerator pedal to the floor while you crank the engine. This puts the computer in clear flood mode. It's possible that the purge valve for the EVAP system is stuck open and pulling gasoline from the tank to the engine when it shouldn't be. This will usually cause hard starting immediately after a gas fill up. BTW, don't waste your time on the magical security system resets you read about online. Those procedures are part of a specific repair and do not work in any other situation!! Check your spark plugs too. Are they wet with gasoline? If so, it's flooded. The only way to fix the security system problem is to visit your local GM Dealer or possibly a locksmith. Do NOT let anyone else play around with it!! Hope that helps! Jim

UPDATE: I bought and installed a camshaft position sensor, went to start it after installation and it started. Idled roughly for about 30 seconds when it shutoff and resumed previous crank no start behavior. I think the car siting for a week did more than the cam sensor. Rented a fuel pressure tester and am getting 41-45 psi after priming and during cranking. Parts store employee theorized that the fuel filter could be partly clogged. I also noticed that when I was trying to start it that when I held the throttle down all the way the car seemed to want to start but then failed to. Any help appretiated.

Still sounds like an ignition module.

Is there a way to verify the ignition control module? The cheapest I can find will cost a pretty penny. If not I'll try it anyway.

Run it until failure and see if you get any spark at a spark plug, no spark module is in failure.