You probably won't have many problems with your Cadillac Catera radiator. Yes, there's the occasional leaking hose or two, but aside from that, you shouldn't have a lot to worry about as long as you put a bit of effort into your radiator's maintenance. If ever you do have problems with it though, the issues discussed below (which include the said leaking hose) are what you can expect.
Air doesn't belong in your Cadillac Catera radiator. It doesn't have any business being inside your radiator since air can block the flow of coolant, which of course results into the diminished effectiveness of your cooling system. Unfortunately, air still finds a way to get in (this normally happens when servicing your radiator). The only solution to this problem is to bleed your radiator. Don't worry; the process shouldn't be too difficult especially if you're a seasoned DIYer.
If there's a puddle of coolant underneath your Catera, the radiator hoses are the most likely sources of it. Yes, there's a good chance that the leaking didn't originate from the radiator itself, which you should be thankful for since a leaking radiator is a far bigger hassle than cracked hoses.
Anyway, the non-stop flow of fluid through the radiator hoses makes them highly prone to wear and tear. With that in mind, it really isn't surprising if they eventually develop cracks. Even if the hoses are durable, leaking is pretty much inevitable at some point. Replace any cracked hoses as soon as possible to avoid wasting coolant and compromising your Catera's cooling system.
This is the worst thing that could happen to your Cadillac Catera radiator. As mentioned earlier, a leaking radiator is much worse than leaking hoses. It's because a leaking radiator requires considerably more money and effort to fix than the hoses. In fact, merely confirming if your radiator is indeed cracked will already give you a tough time since it's not easy to pinpoint the exact location of the damage.
One way you could do to fix this problem is by patching the crack on your Cadillac Catera radiator. That sounds kind of simple but the actual process will give you a major headache. If that doesn't work, you'll be left with no choice but to replace the entire radiator. Hopefully, it won't come down to that.