Answer:
It would be helpful to know what year vehicle you have as there are two different ignition systems used on the Chevy Celebrity.
Possible reasons for not getting spark in a distributor equipped engine: 1982 to 1986
Distributor cap or rotor defective
Reluctor failed
Pickup coil failure
Ignition module failed
wiring or plug in connections loose corroded or failed
Coil failed, or coil wire to distributor failed
No power to the distributor or coil
Possible reasons for not getting spark in a distributor less system: 1987 to 1990
Failed crankshaft position sensor
Failed ignition module
Failure in wiring or engine computer