2019 Chevrolet Express 3500 Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2019 Chevrolet Express 3500 and How to Fix Them

Find Repair Location
Reviewed by
Andrew Hajjar
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 3500 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 3500 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 2019 Chevrolet Express 3500?

To effectively diagnose an oil leak in your 2019 Chevrolet Express 3500, begin with a systematic approach that prioritizes simpler checks before delving into more complex diagnostics. Start by locating the leak; inspect the area beneath your vehicle for any visible oil spots or drips, which can provide immediate clues. Next, examine the oil pan for cracks or damage, as this is a common source of leaks. Ensure that the oil filter is securely installed, as a loose or damaged filter can also lead to oil loss. Don’t overlook the oil drain plug; verify that it is tightened properly. Following these initial checks, inspect the gaskets and seals around critical engine components, such as the valve cover and oil pan gaskets, for signs of wear. If the leak remains elusive, consider performing a UV dye test, which can help pinpoint the source of the leak when combined with a UV light. Lastly, keep track of your oil levels over time to identify any significant drops that may indicate a persistent leak. By following this structured diagnostic approach, you can efficiently identify and address the oil leak in your vehicle.

What are the common causes of oil leaks in a 2019 Chevrolet Express 3500?

When dealing with oil leaks in a 2019 Chevrolet Express 3500, 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 significant leaks. Additionally, a faulty or improperly installed oil filter can also be a source of oil leakage, so it's important to ensure that the filter is correctly fitted and in good condition. Another area to inspect is the valve cover gasket, as wear and tear can compromise its sealing ability, resulting in leaks. Don't overlook the oil drain plug; if it's loose or damaged, it can easily allow oil to escape. Lastly, the rear main seal, located at the back of the engine, is another potential leak point that can develop issues over time. By regularly checking these components and addressing any signs of wear, DIYers can effectively manage oil leaks and maintain their vehicle's performance.

How urgent is it to address the oil leak in a 2019 Chevrolet Express 3500?

Addressing an oil leak in a 2019 Chevrolet Express 3500 is of utmost urgency due to the serious implications of neglecting this issue. An oil leak can lead to insufficient lubrication of the engine, resulting in increased friction and wear on essential components, which may ultimately cause significant engine damage. Additionally, a rapid drop in oil levels can lead to overheating, further compromising the vehicle's performance. Beyond mechanical concerns, oil leaks pose environmental risks, as spilled oil can contaminate soil and water sources, making prompt repairs crucial for ecological preservation. Furthermore, oil leaks can create hazardous driving conditions, as they may lead to slippery surfaces that increase the risk of accidents. Therefore, it is essential to address any signs of an oil leak immediately to safeguard both the vehicle's integrity and the safety of those on the road.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.