Cadillac STS The newest installation of the performance sedan from Cadillac, having replaced the Seville

97 sts Please Help

Old 04-03-2007, 08:44 PM
Thread Starter
Join Date: Apr 2007
Posts: 1
Default 97 sts Please Help

Just replaced the heater core, and now the radiator is leaking. Should the radiator be replaced too?, anyone seen this issue ?
Old 04-04-2007, 09:26 AM
Join Date: Mar 2007
Posts: 114
Default RE: 97 sts Please Help

By nature, leaks only get worse in time, so yes you should replace it.
Old 04-06-2007, 12:45 AM
Katzmans Caddy's Avatar
Super Moderator
Join Date: Dec 2006
Location: Toronto, CANADA
Posts: 1,461
Default RE: 97 sts Please Help

These are just 10 year old car problems on cars that probably had coolant in them too long. Get your cooling system working properly, it is the achilles heal of the Northstar if neglected.
Old 04-12-2007, 05:08 PM
Join Date: Mar 2007
Posts: 40
Default RE: 97 sts Please Help

That worries me actually. My 97 STS starts to creap up on the heat factor when you are sitting in one place for too long. Not sure if that's normal for these cars or what but I'm pretty sure that it didn't use to do that whenever I first bought it.

Of course you can't really expect a vehicle (Any vehicle) to make it 10 years without having SOME kind of problem. Unless you have it sitting in a garage under a tarp for that long.

What sort of preventative measures should one take for the cooling system in this type of vehicle? I'm really curious now, and how much would these procedures cost? Just wondering.

Sorry to take up your post whjordan18...
Old 04-12-2007, 08:21 PM
Join Date: Mar 2007
Posts: 114
Default RE: 97 sts Please Help

Just change the Dexcool at least once in every five years and add the GM coolant supplement tablets or BarsLeak Golden Seal powder (two tubes) to the fresh liquid. Yes, temps climb even higher when you turn off the ignition, which is called a heat soak, and is normal. Start worrying when you get temps consistantly higher than, say 225F while on the freeway.
Old 04-14-2007, 12:19 AM
Join Date: Mar 2007
Posts: 40
Default RE: 97 sts Please Help

That's good to know, I'm probably just being paranoid actually. it drops down significantly when you begin to drive for a distance. Unfortunately I have other problems on the car to worry about right now.
Related Topics
Thread Starter
Last Post
Cadillac Al
General Tech
11-30-2008 02:56 PM
Cadillac STS
03-13-2008 05:32 PM
Cadillac STS
09-15-2007 07:36 PM
Cadillac Seville
08-20-2007 08:50 PM
Cadillac STS
02-08-2007 12:04 PM

Thread Tools
Search this Thread
Quick Reply: 97 sts Please Help

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.