: 97 sts overheating

08-22-10, 11:34 PM
my 1997 sts still overheats after i replaced a bad radiator. it will drive for like an hour fine, then when i go up a big hill it suddenly overheats to the point where the computer tells me to shut engine off. what could be going on here?

08-22-10, 11:45 PM
This forum is for the 2005 & up STS. You may have the headgasket problem common in that era. Try:

Seville/Eldorado Forum (http://www.cadillacforums.com/forums/cadillac-seville-cadillac-eldorado-forum/)

Northstar Technical Discussion (http://www.cadillacforums.com/forums/northstar-performance-technical-discussion/)

08-24-10, 09:02 PM
Sounds like the Fan is NOT working, I am not sure if your year has a
mechanical fan, or an electric one.
Good Luck :cool2:

08-24-10, 10:33 PM
Might be a blown head gasket. You really should go to the correct forum. There is a ton of info on this topic.