2017 Cadillac ATS Engine Makes A Ticking Noise

Diagnosing the Causes of Ticking Noises in Your 2017 Cadillac ATS Engine and Recommended Solutions

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
12% chance it's the
Exhaust Leak
0%
88% chance it's
Something else
The most common reasons a 2017 Cadillac ATS engine makes a ticking noise are low oil level or pressure, an issue with the ignition system, or an exhaust leak.
  • Exhaust Leak: A damaged exhaust manifold or a loose connection in the exhaust system can cause an exhaust leak, resulting in increased noise and potential loss of engine power.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2017 Cadillac ATS engine makes a ticking noise?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

If the drive belt tensioner fails, there will be a very audible chirping, grinding, or rattling noise from the front of the engine. This is because the tensioner pulley bearing is no longer smooth, and rotating causes metal to grind at high speeds. If it is not changed immediately, there is a chance it will become dislodged, or allow the drive belt to lose tension, or break. If the belt falls off, the accessory that it drives will no longer function. Also, if the tensioner spring fails, allowing slack in the belt, it may make an extremely loud squeaking or screeching noise combined with a rattle as the tensioner bounces back and forth under load. The squealing noise is the belt slipping on the crankshaft pulley, and will require belt replacement once the belt tensioner is replaced.

An engine leaking oil does not always make a puddle on the ground. A burning smell may be noticed from the front of the vehicle after driving. This is because engine oil leaks may fall onto hot engine components, especially the exhaust manifold, and burn off before making it to the ground. This poses a risk to the engine because the leak going unnoticed may deplete the engine oil reserve, and lead to an oil starvation issue. Some engine oil leaks only occur while the engine is running, so the leak may be larger than the small spot on the ground makes it seem.

Noises can be accompanied by many annoying or worrisome sensations. Consider the noise of grinding brakes, the noise sounds much like the brake pedal and steering wheel feel. This is important, as random noises can be difficult to replicate without knowing when the sound occurs, what must be done to make the sound, and what sound it is. Any professional technician can replicate and diagnose most noises, but to ensure the vehicle is more quickly diagnosed, make sure you tell your technician these three pieces of information.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the potential causes of a ticking noise in the engine of a 2017 Cadillac ATS, and how should I diagnose them?

When faced with a ticking noise in the engine of your 2017 Cadillac ATS, a systematic diagnostic approach is essential for identifying the root cause. Start by checking the engine oil level, as low oil can lead to inadequate lubrication and result in ticking sounds. If the oil level is sufficient, inspect the valve lifters for wear, as these components can also contribute to the noise if they are not functioning properly. Next, examine the exhaust system for any leaks, particularly near the engine, as these can create similar ticking sounds. Additionally, consider the timing chain; any issues here may require a more in-depth inspection. It's also important to rule out spark knock, which can be addressed by checking ignition timing and fuel quality. Lastly, inspect the heat shields around the exhaust system, ensuring they are secure and undamaged, as loose shields can produce ticking noises as well. By following this methodical approach, you can effectively narrow down the potential causes of the ticking noise and take appropriate action to resolve the issue.

What are the common causes of a ticking noise in the engine of a 2017 Cadillac ATS?

When you hear a ticking noise coming from the engine of your 2017 Cadillac ATS, it’s essential to consider several common problems that could be at play. One of the primary culprits is low engine oil, which can lead to increased friction among engine components, resulting in that unmistakable ticking sound. If the oil level is adequate, the issue might stem from worn valve lifters, which can wear down over time and create noise as they operate. Another possibility is a faulty timing chain; if it’s loose or worn, it can produce a ticking noise as it interacts with the engine’s gears. Additionally, an exhaust leak can manifest as a ticking or tapping sound, particularly noticeable when the engine is running. Lastly, spark knock, or pre-ignition, can also be a source of ticking, caused by improper combustion timing. Identifying the exact cause of the ticking noise is crucial, as addressing it promptly can prevent more severe engine damage down the line.

How urgent is it to address the ticking noise in the engine of a 2017 Cadillac ATS?

When you hear a ticking noise in the engine of your 2017 Cadillac ATS, it’s crucial to act swiftly. Early detection is key, as addressing the issue promptly can prevent minor problems from escalating into major engine failures. The ticking could stem from low oil levels, worn components, or valve train issues, all of which can compromise your vehicle's performance and longevity. Ignoring this noise not only risks further damage but can also lead to safety concerns, especially if the noise indicates a serious underlying problem. While a DIY approach may be tempting, it’s advisable to consult a qualified mechanic for a thorough inspection to accurately diagnose the issue. By prioritizing this concern, you ensure the reliability of your vehicle and safeguard against costly repairs down the line.

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