It ran fine the day before yesterday, but I went to start it today and it won't start.
I turn the key and the starter works but the engine doesn't fire. I put some gas in it cause it was VERY low, but still the same problem. Tried some starting fluid and still no go. Held the gas to the floor and held the ignition for a few seconds and it TRIED to fire, but did not come to life.

What could be the problem? When I turn the key to accessory I can hear the fuel pump. I also have the VATS bypass on the car, though I don't think this is a VATS related problem because if I remember correctly, VATS shuts off the starter (as well as the injectors and ignition).

Could there maybe be air in the fuel lines from trying to start the car with very little gas in it? I remember I had a problem with my '87 Vette about a year or so ago and I had to take it to a shop cause I couldn't figure it out. Turns out it was a bad "ignition module." Where is the ignition module located on my IROC?

I need to get this car running before it rains! (I hate riding my bike in the rain)

 

There is a valve on the passenger side of the TPI on the fuel rail. Its called a Schraeder valve. It has a little cap on it like the valve stem on your tires. Pull the cap off and get somthing very small and push the little thing down. (Make sure that you have primed the fuel pump already) If gas starts spewing out with a good amount of pressure, enough to atomize it, then you have enough fuel getting to the motor. If it is the ESC module it should be located right near the distributor on the left side right under the plenum extension piece that comes off the back of the TPI. Either it will be there or on top of the Distribotor. I am not sure if the 90 Iroc's had that setup or not but I gave you both scenarios so you should be ok.