Every vehicle needs three basic things to start/run. Fuel, spark, and compression.
It is pretty easy to check for spark. You can pick up a tester at your local parts store. Check for spark on the wire from the coil and from the wires at the spark plugs. If there is no spark than the coil, pick up coil, module, and PCM can be tested to see what part has failed.
You will need a fuel pressure gauge to check fuel pressure. Your year of vehicle requires a minimum of 55psi to start and slightly less to run. As little as one psi will cause the vehicle not to start.
You can try spraying a little carb spray into the throttle body and see if it will start. If it does you can probably be the fuel pump may be the issue.
Let me know what you find and I'll do my best to help you solve this problem.
I’m happy to assist further over the phone at
https://www.6ya.com/expert/jeremy_d728a59f986299fa
I drove my 2000 GMC Jimmy two days ago and she ran fine, it has rained torrential here the past several days. Now she wont start, i knew i had a bad cell in the battery but i replaced that this morning, she has plenty of crank but no spark of the distributer cap, which was just replaced 5000 miles ago with new wires and plugs,....any help
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