Why does my CTS’s check engine light come on when I start it?

It's okay if your check engine light comes on when you first start your vehicle. This is a sign that your vehicle is testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.

Why is my Cadillac CTS making engine noise?

Unusual noises can signal a problem with your Cadillac CTS engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.

What could damage a Cadillac engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Cadillac CTS engine?

Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.

Can I use water in my Cadillac CTS radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

What can cause the engine in my CTS to suddenly stop?

Your CTS car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Where can I go for Cadillac CTS repair?

Your local Firestone Complete Auto Care fixes Cadillac CTS engines. Book an appointment today! We have thousands of locations across the country.

Reliable Repairs for 2003 Cadillac CTS Engines

Learn about

2003 Cadillac CTS Trim Options

Select your Cadillac CTS trim level to learn more about Cadillac-recommended engine repair. Use the following chart to find information.

V6/3.2L

2003 Cadillac CTS Repair

Stuff wears out. Even your Cadillac CTS's many parts and pieces. When something breaks, we're ready. Select a repair or category to learn more about 2003 Cadillac CTS services.

We Care for Cadillac CTS Engines

Cadillac CTS engines are known for their reliability. That might be why you bought it in the first place. However, the wear-proof engine has yet to be invented! Things can go wrong on the road. If the unexpected strikes, you may search the internet frantically for quick and affordable 2003 Cadillac CTS engine repairs. That's when it's time to head to Firestone Complete Auto Care. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Cadillac CTS engines. If you think something’s wrong with your engine, schedule an appointment at your convenience. After all, Firestone Complete Auto Care is one of the most popular picks for professional engine repairs thanks to its service and affordability.

My 2003 Cadillac CTS Check Engine Light Is On

An illuminated check engine light on your Cadillac CTS is one of the first signs it's time to 'brake' for engine service. A check engine light that’s flashing or steadily illuminated could point to problems with your or emission system, and it won’t go away by ignoring it. Potential causes may include a faulty oxygen sensor, bad spark plug, issues with your catalytic converter, or an engine vacuum leak, but that's only a few of the possible causes. Bring your CTS to Firestone Complete Auto Care to get computerized diagnostics and we'll determine exactly why your check engine light is on. engine rattling, essential fluid leaks, or engine misfiring.

Engine Repairs for Your 2003 CTS

If your 2003 Cadillac CTS needs engine repair, our technicians will make sure you understand what’s going on before they start working on your engine. We don't start working until we have your approval. If a repair isn’t urgent right now, we’ll let you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We want to provide you with the information you need to make an informed engine repair decision. Turn to Firestone Complete Auto Care for your 2003 CTS engine repairs and you can drive easy knowing that we use Cadillac-approved parts and fluids — serpentine belt, valve guide seal, ignition coil, or another part.

2003 Cadillac CTS Engine Q&A

Why does my CTS’s check engine light come on when I start it? It's okay if your check engine light comes on when you first start your vehicle. This is a sign that your vehicle is testing its circuits. The light should go off shortly. Bring your vehicle in if it doesn't.
Why is my Cadillac CTS making engine noise? Unusual noises can signal a problem with your Cadillac CTS engine. Tapping or knocking could mean you're low on oil. A high-pitched whistle could signal an intake leak or misaligned belt. Squealing can indicate a loose fan belt, and grinding could be a sign that something is wrong with your brakes — not the engine.
What could damage a Cadillac engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Cadillac CTS engine? Certain driving habits can hurt your engine. These habits include driving on an empty fuel tank, flooring the gas pedal while the car is in Park, or accelerating too quickly, too soon. Steer clear of these habits to help protect engine performance and efficiency.
Can I use water in my Cadillac CTS radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
What can cause the engine in my CTS to suddenly stop? Your CTS car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Where can I go for Cadillac CTS repair? Your local Firestone Complete Auto Care fixes Cadillac CTS engines. Book an appointment today! We have thousands of locations across the country.