96 Lumina 3.1 (I had neglected checking coolant-no former problem)engine overheated while using AC on humid day/ no visible coolant loss/ no smoke at exaust, fans didn't kick on.
I immediately shut down, added coolant (it was really low), bled system, added aluma seal, replaced radiator cap, removed cover on one fan (relay-looked good.) I was told temp sensor might not have functioned since coolant was low, so I didn't replace - still have never seen fans run.
Neither my "low coolant light" or fans kicked on though the temp approached 260deg on dash. System seems to be cooling ok now, not overheating at all, but I am concerned about my fans not working.
Does anybody have the diagnostic map, electrical diagram, experience or info on tracing this? - thanks