Cadillac Repair: 93 Eldorado no start, coolant system, number combinations

Question
I have a 93 Eldorado with the 4.9L. It overheated and then would not start. It cranks, has spark(orange and weak) and gas. I pressured checked the coolant system and found a leaking hose. I repaired it and retested it, It didn't leak down at all. This leads me to believe I didn't blow a gasket is there any other way to tell? What should I check next?

Answer
Check your system for fault CODES. Follow this procedure:

1. Ignition ON. Engine OFF.

2. Simultaneously push and hold for 3 seconds the OFF and WARMER buttons on your climate control panel and release them.

3. Write down EXACTLY as they display all the LETTER/NUMBER combinations that display until you see PCM?.

4. Tell me the codes you get.