Does it turn over? Does it have: fuel spark compression?
check the ignition module, it's in or around the rotor
you need a new alternator.
show me where the starter relay is are on a 2000 Pontiac Bonneville
have a pontiac 6000 2.5 motor and it wont stay running
try replacing the starter
try replacing your battery maybe turn the key?
what kind of car 2002 Pontiac grandam se 2.2
security lock out had same problem with our 2004 grand am
The Optispark distributor is notorious for causing this problem.
Try adding more gas...
let the air out of the bleeder valve on the fuel rail.
the first thing I would check is, fuel, spark, coil, ignition module