What does an illuminated coolant temperature light mean for my Cadillac?

If the coolant light illuminates on your dashboard, your engine could be overheating. Pull over to a safe area and wait for the engine to cool down. Then, head to your nearest Firestone Complete Auto Care for a coolant system check.

What are the puddles in my driveway or garage floor?

Notice a leaking fluid that's green, bright orange, or pink and feels sticky? It might be antifreeze. Antifreeze is toxic but has a sweet smell and taste that's attractive to many cats and dogs. Do your pets a favor and have an antifreeze leak investigated ASAP. Then hose down the driveway or garage floor!

When should my Cadillac STS radiator be cleaned?

To keep your Cadillac STS radiator running well, it’s wise to get it cleaned out a few times a year.

What is causing my STS to overheat?

One of the main reasons your Cadillac STS engine might overheat is because you don’t have enough coolant. Other causes include a clogged radiator, a damaged cooling fan, a malfunctioning thermostat, or a faulty water pump.

What is making my STS radiator sound like it’s boiling or rumbling?

If your radiator sounds like it's boiling or rumbling, you could have air pockets in the cooling system of your STS. You might also have a damaged radiator cap (super easy to fix!) or a clogged radiator.

Should I be concerned about rust in my STS radiator?

Yes. Having rust in your Cadillac STS radiator can cause leaks, a reduction in cooling efficiency, and even radiator failure. If rust is left untreated, it can corrode the radiator's cooling passages, causing small cracks or holes that can significantly impact the radiator's ability to function. To help prevent rust from becoming a major issue, it's important to properly maintain your radiator system.

2009 Cadillac STS Radiator Service

Get Started

Schedule Cadillac STS Radiator Service

Keeping your cool is easier when your engine is cool. Schedule your 2009 Cadillac STS radiator repair or service today.

Schedule an Appointment

Is It Time for Service on My 2009 Cadillac STS Cooling System?

Not sure what a radiator does? That makes it difficult to know when to have your Cadillac STS radiator serviced, but it’s vital to know what to look for. As part of your car’s cooling system, your radiator helps keep engine temperature regulated. If your radiator isn’t functioning like it’s supposed to, the engine can overheat – or worse, break down.

Staying on top of routine radiator maintenance for your 2009 Cadillac STS is essential for long-term engine health. To keep your radiator functioning, Cadillac recommends replacing your antifreeze or coolant at scheduled intervals but you can also take note of any signs your radiator is going bad. You could be on the verge of a radiator-induced engine breakdown if you notice a low coolant light or higher-than-normal engine temperatures on your dashboard, or if you spot coolant leaks coming from your car. As soon as you see one of these symptoms, come to your nearest Firestone Complete Auto Care for a Courtesy Check.

What to Expect from Cadillac STS Radiator Repair

What happens during a radiator repair service? At Firestone Complete Auto Care, we start by performing a thorough inspection of your Cadillac STS cooling system. Then, we’ll move on to a machine-powered coolant exchange. Finally, we’ll refill the flushed sealants, lubricants and chemicals, then do a pressure check to catch any possible leaks.

Issues with your radiator often coincide with a malfunctioning water pump. Of all the parts in your 2009 Cadillac STS engine, the water pump is one that you can't put off repairing or replacing. This pump ensures that coolant is always flowing through the radiator, hoses, and engine. If it’s not working well (or at all), your engine can easily overheat. Our technicians can take a look at your radiator’s components to help make sure everything is in working order. From the radiator cap to the heater core, your 2009 Cadillac STS is in good hands at Firestone Complete Auto Care. After all, we know it’s not just a car. It’s your car.

Cadillac STS Radiator Q&A

Take care of your 2009 Cadillac STS radiator and it will last. Check out our top questions and answers about Cadillac radiators below, and visit your nearest Firestone Complete Auto Care at the first sign of an overheating engine.

What does an illuminated coolant temperature light mean for my Cadillac? If the coolant light illuminates on your dashboard, your engine could be overheating. Pull over to a safe area and wait for the engine to cool down. Then, head to your nearest Firestone Complete Auto Care for a coolant system check.
What are the puddles in my driveway or garage floor? Notice a leaking fluid that's green, bright orange, or pink and feels sticky? It might be antifreeze. Antifreeze is toxic but has a sweet smell and taste that's attractive to many cats and dogs. Do your pets a favor and have an antifreeze leak investigated ASAP. Then hose down the driveway or garage floor!
When should my Cadillac STS radiator be cleaned? To keep your Cadillac STS radiator running well, it’s wise to get it cleaned out a few times a year.
What is causing my STS to overheat? One of the main reasons your Cadillac STS engine might overheat is because you don’t have enough coolant. Other causes include a clogged radiator, a damaged cooling fan, a malfunctioning thermostat, or a faulty water pump.
What is making my STS radiator sound like it’s boiling or rumbling? If your radiator sounds like it's boiling or rumbling, you could have air pockets in the cooling system of your STS. You might also have a damaged radiator cap (super easy to fix!) or a clogged radiator.
Should I be concerned about rust in my STS radiator? Yes. Having rust in your Cadillac STS radiator can cause leaks, a reduction in cooling efficiency, and even radiator failure. If rust is left untreated, it can corrode the radiator's cooling passages, causing small cracks or holes that can significantly impact the radiator's ability to function. To help prevent rust from becoming a major issue, it's important to properly maintain your radiator system.