2015 GMC Acadia Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2015 GMC Acadia 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 2015 GMC Acadia 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 2015 GMC Acadia 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 steps to diagnose the oil leak in a 2015 GMC Acadia?

To effectively diagnose an oil leak in your 2015 GMC Acadia, begin by visually inspecting the engine and the area beneath the vehicle for any signs of oil accumulation or drips. This initial step helps you locate the general area of the leak. Next, check the oil level using the dipstick; a significant drop in oil level can indicate a serious leak that requires immediate attention. Pay close attention to the oil filter and drain plug, as these components are common culprits for leaks due to wear or improper installation. Additionally, examine the gaskets and seals, particularly the valve cover gasket and oil pan gasket, for any signs of deterioration or damage. If the source remains elusive, consider adding UV dye to the engine oil and using a UV light to help identify the leak's origin, as the dye will fluoresce under the light. For a more thorough investigation, performing a pressure test on the oil system can help pinpoint the leak's location. If these steps do not yield results or if the repair seems beyond your skill level, consulting a professional mechanic is advisable to ensure the issue is resolved effectively.

What are the common causes of oil leaks in a 2015 GMC Acadia?

When dealing with oil leaks in a 2015 GMC Acadia, it's essential to understand the common culprits that may be at play. One frequent issue is the degradation of the oil pan gasket, which can wear out over time, leading to leaks. Similarly, a faulty valve cover gasket can also contribute to oil seepage, making it crucial to inspect these components regularly. 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 for proper tightness, as a damaged or improperly secured plug can lead to significant leaks. Lastly, keep an eye on the engine seals, such as the rear main seal and camshaft seals, as these can crack or wear out, resulting in oil leaks. Addressing these issues promptly is vital to prevent further engine damage and maintain the vehicle's performance, making regular maintenance and inspections key to a well-functioning Acadia.

How urgent is it to address the oil leak in a 2015 GMC Acadia?

Addressing an oil leak in a 2015 GMC Acadia is not just a matter of convenience; it is a pressing issue that requires immediate attention. Ignoring an oil leak can lead to severe engine damage due to the loss of lubrication, which increases friction and heat within the engine. This can escalate to catastrophic failures, such as engine seizure, if the oil levels drop too low. Moreover, the safety risks associated with oil leaks cannot be overlooked; oil dripping onto hot engine components poses a significant fire hazard. By taking action early, you not only safeguard your vehicle's performance but also prevent more extensive and costly repairs in the future. Therefore, if you notice any signs of an oil leak, it is crucial to address the issue promptly to ensure the safe and efficient operation of your GMC Acadia.

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