First you would want to verify the security light is not flashing. If it is you have a security issue and you could try to use another key. Otherwise make sure 10 Amp IGN E fuse in location 22 is good, check the 40 Amp IGN A fuse in location 34, check 10 Amp Crank fuse location 17. If fuses look good problem could be ignition switch, neutral safety switch, relay, or wiring. You can also pull out the wire harness on the neutral saftey switch and jump terminals together, if it starts this is the problem. Here is a wire diagram, let me know if you have questions. Thanks
You can try security system relearn procedure incase that may be problem, here is is. Thanks
Turn the ignition switch momentarily from the OFF position to the CRANK position. Release the key, leave the ignition in the ON position for a minimum of 10 minutes. Do not continue until at least 10 minutes has passed, or the relearn will abort. Going over 10 minutes is OK. After the 10 minute cycle, turn the key off for 15 seconds. Repeat steps 3-5 two more times (3 times total). After the 3rd cycle, the theft system should synchronize. It should start and run normally.