2014 Buick LaCrosse Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2014 Buick LaCrosse and How to Address Them

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Reviewed by
Aisha
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 Buick LaCrosse 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 Buick LaCrosse 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 steps should I take to diagnose the oil leak in my 2014 Buick LaCrosse?

To effectively diagnose an oil leak in your 2014 Buick LaCrosse, begin with a systematic approach that prioritizes simplicity and thoroughness. Start by locating the leak; check beneath the vehicle for any visible oil spots or drips, as this can provide immediate clues about the source. Next, inspect the oil pan for cracks or damage, as this is a common area for leaks. Pay close attention to the oil filter and drain plug, ensuring they are secure and free from oil residue. The valve cover gasket is another frequent culprit, so examine it for signs of wear or deterioration. Additionally, inspect the oil cooler lines and the oil pressure sensor, as both can develop leaks over time. Throughout this process, monitor your oil levels regularly; a significant drop in oil can indicate a leak that requires prompt attention. By following this diagnostic approach, you can identify the source of the leak and take the necessary steps to resolve the issue effectively.

What are the common causes of oil leaks in a 2014 Buick LaCrosse?

When dealing with oil leaks in a 2014 Buick LaCrosse, it's crucial to understand the common culprits that may be at play. One frequent issue is a worn or damaged oil pan gasket, which can deteriorate over time and lead to significant leaks. Similarly, a faulty valve cover gasket can cause oil to seep out, indicating a need for replacement. Another potential source of leaks is the oil filter; if it is loose or damaged, it can allow oil to escape from the engine. Additionally, the oil drain plug should be checked, as a loose or degraded plug can also result in leaks. Lastly, inspect the oil cooler lines for any cracks or damage, as these can contribute to oil leakage as well. Addressing these issues promptly is essential not only for maintaining engine performance but also for preventing further damage, making regular inspections and maintenance a key part of vehicle care.

How urgent is it to address the oil leak in my 2014 Buick LaCrosse to prevent potential engine damage?

Addressing an oil leak in your 2014 Buick LaCrosse is not just a matter of routine maintenance; it is an urgent necessity to prevent severe engine damage. Oil plays a critical role in lubricating engine components, and a leak can lead to insufficient lubrication, resulting in increased friction and wear. If left unchecked, the oil levels can drop dangerously low, causing the engine to overheat and potentially seize, which could lead to expensive repairs or even total engine failure. Moreover, an oil leak poses a significant safety risk, as oil can drip onto hot engine parts, creating a fire hazard. Therefore, it is essential to act quickly and resolve any oil leak issues to ensure the safety and longevity of your vehicle.

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