[dmjlambert]

Yes, thanks. I am most interested in finding the factory spec temperature for what is considered overheating for the temp warning light according to the GM engineers. Most temperature switches, especially those found on hot rod parts sites, appear to be for switching electric fans. So, I'm looking for known fitment for vehicles and engines for the dash warning light specifically. Once I finally find definitive information, I will then roll it around in my head and consider whether to go with the factory spec, or warn at a cooler temperature using a non-standard or fan switch.