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Not sure where the fan relays are on the 94 but with those bad the fans wont run.
as said the LT1s run warm and around 225-230ish your temp gauge will about be pegged making you think its overheating yet thats where its designed to run.
If you were a bit closer may be able to take a peek at it.
I would like to announce that.....I test on our drive way after changing the coolant sensor and now the fan to the driver side turns on after hitting 228 on the digital but for some reason the gauge shows it a bit higher, but the fan turns on with the digital and off after 210. Meaning is working, right? Yay, it works now!!!! Thank God and thank each and one of you!!!!!!! Love ya all!
when I changed the T stat in my 96, it took four or five start up, let it run to operating temp, shut off, cool down, and add coolant cycles before the system was completely free of air. could be something that simple.