GMC Acadia Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 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 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 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.

An oil leak may be noted on the ground where the vehicle is parked. However, many vehicles have plastic trays underneath the engine that may catch leaking oil and conceal the leak. In such cases, a low oil level, a burning oil smell, or even smoke from oil burning in the engine bay may be noted.

»MORE: Signs of a bad oil pan gasket

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.

Troubleshooting Oil Leaks in a GMC Acadia

When troubleshooting oil leaks in a GMC Acadia, start by observing the symptoms, such as oil puddles under the vehicle or low oil levels. These signs often indicate a leak that needs immediate attention. Begin your diagnostic process by inspecting the most common leak sources, including the engine gaskets and oil system components. Look for any visible signs of oil around the timing chain cover or crankshaft seal, as these areas are notorious for leaks. If you notice oil pooling or dripping, it may be time to replace gaskets or seals. Additionally, check the levels of transmission and power steering fluids, as these can sometimes be mistaken for engine oil leaks. If the source of the leak remains elusive or if the repairs seem beyond your skill level, consulting a professional mechanic is advisable to ensure a thorough diagnosis and effective repair. Regular maintenance and prompt action can help mitigate further damage and keep your GMC Acadia running smoothly.

How to Address Oil Leaks in a GMC Acadia?

When tackling oil leaks in your GMC Acadia, it's essential to understand the common problems that can arise within the vehicle's oil system. One frequent issue is the deterioration of gaskets and seals, which can lead to leaks around the engine and oil pan. Additionally, improper installation or wear and tear on components such as the oil filter or drain plug can also result in oil escaping from the system. It's important to regularly inspect these areas for signs of oil accumulation or drips, as early detection can prevent more significant damage. Another common problem is the use of incorrect oil types or viscosities, which can exacerbate leaks and affect engine performance. By familiarizing yourself with these potential failure modes, you can take proactive steps to maintain your Acadia, ensuring that any oil leaks are addressed promptly and effectively.

How Urgent is an Oil Leak in a GMC Acadia?

An oil leak in a GMC Acadia is a serious issue that demands immediate attention due to the potential risks it poses to both the vehicle and driver safety. When oil leaks occur, they can lead to a significant loss of engine oil, which is vital for lubricating engine components and ensuring smooth operation. If the oil levels drop too low, it can cause the engine to overheat, resulting in severe damage that may require costly repairs. Additionally, oil leaks can create hazardous driving conditions, as spilled oil on the road can lead to slippery surfaces, increasing the likelihood of accidents. By addressing an oil leak promptly, you not only safeguard your vehicle's performance but also prevent more extensive damage and ensure a safer driving experience. Therefore, if you notice any signs of an oil leak, it is crucial to take action immediately to maintain the longevity and reliability of your GMC Acadia.

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GMC Acadia Oil Leak Causes & Repair Costs | RepairPal