Ignition control module.. located under the distributor
The distributor cap is probably cracked and moisture is getting into it. Replace the cap .
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Replace the coolant temp sensor.
sound like you have a 4.3 vortec with a bad spider. it is multiported so inside the plentum of the intake, there is your spider, they go bad and fill up your intake with fuel, then dump it down the valley of the engine.
The fuel pump relay on that 92 Blazer with the 4.3 engine is located under the hood, on the firewall, drivers side, if there is more than one relay there, it's the one closest to the drivers fender.
Was that the only code that caused you to replace it? Do you have it close enough to sense again.
89 ,gmc ,jimmy turns over wont start, fuelpump ,good fuses good ,linkwier,good