2014 Cadillac CTS Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2014 Cadillac CTS and How to Address Them Effectively

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 2014 Cadillac CTS is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A worn or damaged oil pump or filter can lead to low oil pressure, resulting in inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
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 2014 Cadillac CTS is leaking oil?

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.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

A bad oil level sensor may cause a false reading of the engine oil level. The oil level warning light may illuminate even when the oil level (checked manually) is within an acceptable range. The warning light may also come on and off intermittently if the sensor is faulty. An error code may be sent to the PCM and a check engine light may come on the dashboard as well if the sensor is bad.

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 initial diagnostic steps to identify the source of the oil leak in a 2014 Cadillac CTS?

When tackling an oil leak in a 2014 Cadillac CTS, it's essential to adopt a systematic diagnostic approach that begins with straightforward methods before progressing to more complex solutions. Start with a thorough visual inspection of the engine and the area beneath the vehicle, looking for any visible signs of oil accumulation or dripping. This initial step can often reveal the leak's source. Next, check the oil levels to assess any significant loss, which may indicate a leak's severity. Pay close attention to the oil filter and drain plug, as these components can sometimes be the culprits; ensure they are secure and free from leaks. Additionally, inspect the gaskets and seals, particularly the valve cover gasket and oil pan gasket, as these are common areas for oil leaks. If the source remains elusive, consider adding UV dye to the engine oil and using a UV light to detect any fluorescent traces, which can help pinpoint the leak. Finally, if necessary, perform a pressure test on the oil system to identify any hidden leaks. By following this structured approach, you can effectively diagnose and address the oil leak in your Cadillac CTS.

What are the common causes of oil leaks in a 2014 Cadillac CTS?

When dealing with oil leaks in a 2014 Cadillac CTS, it's crucial to understand the common culprits that may be at play. One frequent issue is the deterioration of the oil pan gasket, which can wear out over time, leading to leaks. Similarly, valve cover gaskets are prone to wear and can also result in oil seeping out. Another potential source of leaks is the oil filter housing gasket; if this component fails, it can create a significant oil leak. Additionally, the rear main seal, located at the back of the engine, is another area where leaks can develop as the vehicle ages. Lastly, oil cooler lines can become compromised, leading to oil escaping from the system. Addressing these leaks promptly is essential not only for maintaining engine performance but also for preventing further damage. Regular inspections and maintenance can help you catch these issues early, allowing for a more straightforward DIY repair process.

How urgent is it to address the oil leak in my 2014 Cadillac CTS?

Addressing an oil leak in your 2014 Cadillac CTS is not just a matter of routine maintenance; it is a pressing concern that requires immediate attention. An oil leak can compromise the engine's lubrication system, leading to increased friction among moving parts, which can ultimately result in severe engine damage. Additionally, a loss of oil can cause the engine to overheat, risking catastrophic failure if left unchecked. The presence of oil on hot engine components also raises the risk of fire, creating a dangerous situation for you and your vehicle. Furthermore, oil leaks pose environmental hazards, as spilled oil can contaminate soil and water sources, contributing to pollution. Therefore, it is crucial to inspect and repair any oil leaks promptly, ensuring the safety, performance, and longevity of your Cadillac CTS. Taking swift action not only protects your investment but also safeguards your well-being and the environment.

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