2019 Buick Enclave Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2019 Buick Enclave and How to Address Them Effectively

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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 2019 Buick Enclave 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 2019 Buick Enclave 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 2019 Buick Enclave?

To effectively diagnose an oil leak in your 2019 Buick Enclave, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by locating the leak; inspect the ground beneath your vehicle for any visible oil spots, which can help you identify the general area of the leak. Next, examine the oil pan for cracks or damage, as this is a common source of leaks. Ensure that the oil filter is securely installed and not leaking, followed by checking the oil drain plug for tightness. The valve cover gasket is another critical area to inspect; any signs of wear or damage here could lead to leaks. Additionally, take a look at the oil cooler lines and the oil pressure sensor, as issues in these components can also contribute to oil leaks. Throughout this process, monitor your oil levels closely, as a significant drop can indicate a leak that requires immediate attention. By following this diagnostic approach, you can efficiently identify the source of the oil leak and take the necessary steps to resolve it.

What are the common causes of oil leaks in a 2019 Buick Enclave?

When dealing with oil leaks in a 2019 Buick Enclave, it's essential to understand the common problems that may arise. One frequent culprit is a worn or damaged oil pan gasket, which can deteriorate over time, leading to significant oil loss. Additionally, a faulty valve cover gasket can cause oil seepage, making it crucial to inspect this area for any signs of wear. Another potential issue is a leaking oil filter; if the filter is not properly installed or becomes loose, it can result in oil leaking from the engine. Furthermore, the oil drain plug gasket can degrade, leading to leaks if not replaced in a timely manner. Lastly, cracked or damaged oil cooler lines can also contribute to oil leaks, particularly in the engine compartment. Regular maintenance and thorough inspections of these components can help prevent oil leaks and maintain the vehicle's performance, making it easier for DIY enthusiasts to keep their Enclave in top shape.

How urgent is it to address the oil leak in my 2019 Buick Enclave?

Addressing an oil leak in your 2019 Buick Enclave is not just a matter of routine maintenance; it is a pressing concern that requires immediate attention. An oil leak can severely compromise the engine's lubrication system, leading to increased friction among moving parts, which can result in significant engine wear and tear. This deterioration can escalate into more severe issues, such as a loss of oil pressure, which may cause the engine to overheat and ultimately fail. Moreover, the safety risks associated with oil leaks cannot be overlooked; oil dripping onto hot engine components poses a fire hazard that could endanger both you and your vehicle. By tackling the oil leak promptly, you not only safeguard your engine's health but also prevent the likelihood of incurring costly repairs down the line. Therefore, if you notice any signs of an oil leak, it is crucial to act swiftly to maintain the performance and safety of your Buick Enclave.

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