Why does the check engine light come on when I start my CTS?

Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your CTS firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why does my Cadillac engine sound different?

Strange engine sounds can be a sign something’s off in your Cadillac CTS. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by 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?

Some driving habits are not so great for your engine. These include driving on a near-empty gas 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 add water to 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 could cause my CTS engine to suddenly stop?

If your CTS car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.

Who can repair my Cadillac CTS engine?

Your local Firestone Complete Auto Care has you covered with expert CTS engine repair. Schedule an appointment today and see us at one of our thousands of locations.

Engine Repairs for Your 2006 Cadillac CTS

Learn about

2006 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.

V6/2.8L

V6/3.6L

V8/6.0L

Repairs for Your 2006 Cadillac CTS

Nothing lasts forever. Even your Cadillac CTS’s engine parts and components will change. When something breaks, we're ready. Click on a repair below to learn more about 2006 Cadillac CTS repairs.

We’re Trained to Care for Cadillac CTS Engines

The Cadillac CTS is respected for its 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 sideways sometimes. When they do, you might find yourself searching for 2006 Cadillac CTS engine repair or replacement parts. Luckily, you won’t have to look far, since Firestone Complete Auto Care has 1,700+ locations across the country. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Cadillac CTS engines. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

My 2006 Cadillac CTS Check Engine Light Is On

As soon as your CTS check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s on or flashing could be a symptom of a serious problem in your vehicle's ignition, Causes may include a faulty oxygen sensor, damaged spark plug, a problem with your catalytic converter, or a leaking engine vacuum, to name a few potential sources. Bring your CTS in for an on-board diagnostic check and we’ll figure out why that check engine light is giving you grief. engine rattling, essential fluid leaks, or engine misfiring.

Cadillac CTS Engine Repair

If your 2006 Cadillac CTS needs engine repair, our technicians will provide you with a thorough explanation beforehand. We don't start working until we have your approval. If a repair can wait, 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. By choosing Firestone Complete Auto Care for CTS engine repairs and you can drive easy knowing that we use Cadillac-approved parts and fluids — timing chain or belt, oil gasket, sensors, or other parts.

Questions About 2006 Cadillac CTS Engines

Why does the check engine light come on when I start my CTS? Generally, your check engine light turning on upon ignition is not a bad thing. It’s just your CTS firing up its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why does my Cadillac engine sound different? Strange engine sounds can be a sign something’s off in your Cadillac CTS. Knocking or tapping could be a symptom of low oil. Whistling could mean a belt is misaligned or there's an intake leak. Squealing may be caused by 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? Some driving habits are not so great for your engine. These include driving on a near-empty gas 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 add water to 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 could cause my CTS engine to suddenly stop? If your CTS car engine suddenly stops, it could be due to overheating, low fuel, a faulty ignition system, sensor problems, electrical system trouble, or mechanical issues.
Who can repair my Cadillac CTS engine? Your local Firestone Complete Auto Care has you covered with expert CTS engine repair. Schedule an appointment today and see us at one of our thousands of locations.