Here are the procedures to check for a no start on a fuel injected engine.It will require a couple diagnostic tools that you do nt most likely posess,but may be able to obtain through a tool loan or rental program at many parts stores.
In order for an engine to run it needs the following:
1. Fuel (Fuel pressure gauge)
2. Spark (In line Spark tester)
3. Injector pulse (Noid Lights)
You must determine which one or more is missing to proceed.
You can reduce the troubleshooting by spraying carb clean or a little ether into the intake throttle body to see if it attempts to start.If it does, then there is a problem with fuel delivery and not ignition.This will tell you whether or not there is fuel being delivered and isolate the issue to fuel pressure/delivery or injector control circuits.
For your 1993 PONTIAC BONNEVILLE:
FUEL SYSTEM PRESSURE 41-47 PSI(POUNDS PER SQUARE INCH)
POSITION THE IGNITION SWITCH AND THE A/C SYSTEM IN THE
OFF POSITION. INSTALL A FUEL PRESSURE GAUGE TO THE
VEHICLES FUEL PRESSURE VALVE.
CONFIRM THAT NO LEAKS ARE PRESENT, AND WITH THE KEY
ON, ENGINE OFF VERIFY THE PSI READING ON THE GAUGE.
You can check for spark at a spark plug wire while cranking with a flat tip driver or in line spark tester inserted into the plug wire boot and placed close to any metal part on the engine besides the fuel system lines and fittings or just plugged back onto the spark plug if using an inline tester.
To check injector pulse you will need a noid light set which can be purchased at your local parts store or through tool rental or loan programs as mentioned above.(Picture below)
To check for air just make sure the air filter is not totally restricted.
To check compression install compression gauge in each cylinder,crank engine,record reading for each cylinder.Look for a big variance between cyls.
If all of this is OK you may have contaminated fuel.
Please post back with your results so that we may help you through you car trouble.
Noid light should flash while cranking.
If you are not inclined to do this I recommend that you take it to most any repair facility and let them diagnose it for you.It should not take more than one hour of diag. to isolate the problem.You can then make the decision to repair the problem yourself or have it repaired for you.