Update, I replaced the radiator, upper/lower hoses, waterpump and the fan clutch with the Hayden 3200.
Upon start up, the check engine light was on (I did not disconnect the battery). So it appears after clearing it (it returned again), had it checked at the dealer and they stated the ECM has to be replaced (then reflashed). There is national back order on the ECM.
I guess my question is, did leaving the battery connected during the unplugging of the original electric fan clutch result in damaging the ECM? I disconnected the OEM electric fan clutch (and reconnected the new one).
The dealer said it was reported as it being dead to the fan clutch. Has anyone else had this experience, I am wondering if I had disconnected the battery first (it would have caused the A/C vents to go to dash). But would it still cause the 'hard fault' being received?