2016 Chevrolet Suburban Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2016 Chevrolet Suburban and How to Fix 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 2016 Chevrolet Suburban 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 2016 Chevrolet Suburban 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.

What steps should I take to diagnose the oil leak in my 2016 Chevrolet Suburban?

To effectively diagnose an oil leak in your 2016 Chevrolet Suburban, begin by locating the source of the leak, which often involves checking for visible oil spots or puddles beneath the vehicle. Once you have a general area identified, inspect the oil pan for any cracks or damage that could be contributing to the leak. Next, examine the oil filter to ensure it is securely installed and not the culprit. Don’t overlook the oil drain plug; if it’s loose, tightening it may resolve the issue. Additionally, inspect the gaskets and seals around the engine for signs of wear or damage, as these can often lead to leaks. Throughout this process, monitor your oil levels closely; a significant drop can indicate a persistent leak. If you are unable to pinpoint the source or if the leak continues after your initial checks, it may be wise to consult a mechanic for a professional assessment. By following this diagnostic approach, you can systematically address the issue and determine the best course of action for repairs.

What are the common causes of oil leaks in a 2016 Chevrolet Suburban?

When dealing with oil leaks in a 2016 Chevrolet Suburban, 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 leaks. Additionally, valve cover gaskets are another common source of oil leaks, as they can wear out and fail to create a proper seal. It's also important to check the oil filter; if it is faulty or improperly installed, it can leak oil from the filter housing. Another potential problem area is the rear main seal, located at the back of the engine, which can develop leaks and allow oil to escape. Lastly, oil cooler line leaks can occur due to wear or damage, leading to oil loss. Addressing these issues promptly is essential to prevent further engine damage and maintain optimal vehicle performance. Regular inspections and maintenance can help you catch these problems early, ensuring your Suburban runs smoothly.

How urgent is it to address the oil leak in my 2016 Chevrolet Suburban?

Addressing an oil leak in your 2016 Chevrolet Suburban is not just a matter of routine maintenance; it is a pressing concern that requires immediate attention. Ignoring an oil leak can lead to a significant drop in oil levels, which compromises the lubrication of essential engine components. This lack of lubrication can result in severe engine damage over time, leading to costly repairs that could have been easily avoided. Furthermore, an oil leak can cause the engine to overheat, as insufficient lubrication prevents the engine from operating efficiently. This overheating not only risks engine failure but also poses a serious safety hazard, as leaking oil can drip onto hot engine parts, increasing the risk of a fire. Therefore, it is crucial to address any signs of an oil leak promptly to safeguard your vehicle's performance and ensure your safety on the road.

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