2015 Chevrolet Express 2500 Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2015 Chevrolet Express 2500 and How to Fix Them

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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 Chevrolet Express 2500 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 Chevrolet Express 2500 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

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 2015 Chevrolet Express 2500?

To effectively diagnose an oil leak in your 2015 Chevrolet Express 2500, begin by visually inspecting the area beneath the vehicle for any signs of oil pooling or dripping, as this can help you pinpoint the leak's location. Next, examine the oil pan for any visible cracks or loose bolts, as these are common culprits for leaks. Don’t overlook the oil filter; ensure it is securely fastened and free from damage, as a faulty filter can also lead to leaks. Additionally, check the oil drain plug for tightness, since a loose or damaged plug can result in significant oil loss. The valve cover gasket is another critical area to inspect, as wear and tear here can often lead to leaks. Furthermore, examine the oil cooler lines for any signs of wear or damage, as these can develop leaks over time. Lastly, take a look at the oil pressure sensor, as leaks can occur around this component as well. Throughout this process, keep an eye on your oil levels; a noticeable drop can indicate an ongoing leak that requires immediate attention. By following this structured approach, you can systematically identify and address the source of the oil leak in your vehicle.

What are the common causes of oil leaks in a 2015 Chevrolet Express 2500?

When dealing with oil leaks in a 2015 Chevrolet Express 2500, it's crucial to understand the common culprits that may be at play. One of the primary sources of leaks can be traced back to the oil system components, which may wear out over time or become damaged. Additionally, engine gaskets are often a weak point; if they degrade, they can allow oil to escape. Another area to inspect is the intake manifold gaskets, which can leak either coolant or engine oil, leading to potential engine damage if not addressed promptly. Furthermore, the oil cooler lines are susceptible to wear and tear, and any issues here can result in significant leaks. If your vehicle is equipped with a turbocharger, be sure to check the oil lines and fittings, as these can also develop leaks. Lastly, the turbocharger outlet pipe should not be overlooked, as problems here can contribute to oil loss. Regular inspections and maintenance of these components can help you catch leaks early, saving you from costly repairs down the line.

How urgent is it to address an oil leak in a 2015 Chevrolet Express 2500?

Addressing an oil leak in a 2015 Chevrolet Express 2500 is crucial due to the significant risks associated with neglecting this issue. The most pressing concern is the potential for engine damage; as oil levels drop, the engine components may not receive adequate lubrication, leading to increased friction and heat that can ultimately result in costly repairs or even engine failure. Additionally, oil leaks pose environmental hazards, as they can contaminate soil and water sources, making timely repairs not just a matter of vehicle maintenance but also a responsibility towards the environment. Safety is another critical factor; oil spills can create slippery surfaces, increasing the risk of accidents for both the driver and others on the road. Lastly, delaying repairs can lead to escalating costs, as minor leaks can develop into major issues over time. Therefore, it is essential for DIY enthusiasts to act swiftly when they notice an oil leak, ensuring the vehicle remains safe, efficient, and environmentally friendly.

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