2019 Chevrolet Express 2500 Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2019 Chevrolet Express 2500 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 2019 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 2019 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

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 an oil leak in a 2019 Chevrolet Express 2500?

When diagnosing an oil leak in a 2019 Chevrolet Express 2500, it's essential to adopt a systematic approach that begins with the most straightforward checks before progressing to more complex diagnostics. Start by visually inspecting the engine and undercarriage for any visible signs of oil, such as spots or drips on the ground. This initial step can often lead you directly to the source of the leak. Next, check the oil level to determine if it has dropped significantly, which may indicate a leak. Pay close attention to the oil filter and drain plug, as these components can sometimes be the culprits; ensure they are secure and free from oil residue. Additionally, examine the gaskets and seals around critical engine areas, including the valve cover and oil pan, for any signs of wear or leakage. If the leak remains elusive, consider using UV dye in the oil, which can help highlight leaks under a UV light. For a more thorough investigation, a pressure test of the oil system can pinpoint the leak's location. If these methods do not yield results, consulting a mechanic may be necessary for a professional assessment. By following this structured diagnostic approach, you can effectively identify and address oil leaks in your vehicle.

What are the common causes of oil leaks in a 2019 Chevrolet Express 2500?

When diagnosing oil leaks in a 2019 Chevrolet Express 2500, it's crucial to understand the common culprits that may be at play. One frequent issue is a degraded or damaged oil pan gasket, which can wear out over time due to exposure to heat and oil, leading to leaks. Similarly, a worn valve cover gasket can allow oil to escape from the engine, often noticeable by oil pooling around the engine block. Another potential source of leaks is a faulty oil filter; if the filter is improperly installed or defective, it can lead to significant oil loss. Additionally, a loose or damaged oil drain plug can create a pathway for oil to leak from the oil pan, while a cracked or damaged oil pan itself can be a more severe issue that requires immediate attention. Regular inspections and maintenance are essential for identifying these problems early, allowing DIY enthusiasts to address them before they escalate into more significant engine damage.

How urgent is it to address the oil leak in a 2019 Chevrolet Express 2500?

Addressing an oil leak in a 2019 Chevrolet Express 2500 is not just a matter of routine maintenance; it is a pressing concern that demands immediate attention. Ignoring an oil leak can lead to severe engine damage due to inadequate lubrication, which is vital for the smooth operation of engine components. The friction caused by insufficient oil can escalate into costly repairs that could have been easily avoided with timely intervention. Moreover, the safety risks associated with oil leaks cannot be overlooked. Oil dripping onto hot engine parts poses a significant fire hazard, making it crucial to resolve the issue promptly to protect both the vehicle and its occupants. By acting quickly to repair an oil leak, you not only safeguard your engine's health but also prevent potential safety hazards and save yourself from incurring hefty repair bills in the future. Therefore, if you notice any signs of an oil leak, it is imperative to address the situation without delay.

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