I have a 2001 Grand Am tha the temperature guage will go all the way over to hot when started than drop back down to the lowest reading after it starts. I think that is normal but it doens't climb after that. The rad fans kick in shortly after starting the engine & stay running. I changed the temp sending unit on the engine today but that didn't fix the problem. What else should I look for and try? Thanks for all who read this and offer help.