Re: 1997 Burb... May not be Chevelle but its a Chevy
First thing I'd suggest is start with the basics. MAF sensor maybe throwing you a curve.
You've got it home. Start it, let it run till it stalls. Check if you are lacking fuel or spark.
I'd first check pos/ground cable at battery, see if they're loose. Wifes Astro had Neg wire loose causing bad connection/stalling.
Spark: Pull a wire off at the cap, have maybe your daughter crank the engine, check for spark from cap to wire. If no spark, I'd
suspect a coil or module faulty when hot.
Fuel: It's F/I so the pump in tank should hum for a couple seconds when ign is in on pos. If good, check valve at fuel rail (like a tire valve),
should be under pressure, spray out not dribble, use a rag. I'm not sure at this point how to check injectors, but
I'd crank engine a few, pull a plug, check if it's wet with fuel.
Wiggle wires around dist, harness at firewall, looking for loose/bad connections.