2012 Chevrolet Impala Is Leaking Oil

Identifying the Causes of Oil Leaks in Your 2012 Chevrolet Impala and How to Fix Them

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Reviewed by
Devin Cabugcal
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 2012 Chevrolet Impala 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 2012 Chevrolet Impala 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.

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 2012 Chevrolet Impala?

To effectively diagnose the oil leak in your 2012 Chevrolet Impala, begin with a systematic approach that prioritizes simpler checks before delving into more complex issues. Start by locating the leak; inspect the area beneath your vehicle for any visible oil spots or drips, which can help pinpoint the source. Next, examine the oil pan for cracks or damage, and ensure that the bolts are tightened securely. The oil filter should also be checked for proper installation and any signs of leakage, as a loose filter can often be 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 oil pan and filter for wear, as these components can deteriorate over time and lead to leaks. The valve cover gasket is another potential source, so be sure to check it for any signs of oil seepage. Lastly, assess the oil pressure sensor for leaks, and monitor your oil levels regularly to detect any significant drops. By following this diagnostic approach, you can efficiently identify and address the oil leak, ensuring your Impala remains in optimal condition.

What are the common causes of oil leaks in a 2012 Chevrolet Impala?

When diagnosing oil leaks in a 2012 Chevrolet Impala, it's essential to understand the common issues that may arise. One frequent culprit is the worn valve cover gaskets, which can deteriorate over time, allowing oil to escape. Additionally, the oil pan gasket is another area to inspect, as it can degrade or sustain damage, leading to leaks from the engine's underside. Another potential source of leaks is the rear main seal, located at the back of the engine, which can cause oil to seep near the transmission. The oil filter housing gasket is also prone to failure, resulting in leaks within the engine compartment. Lastly, don't overlook the oil cooler lines, as leaks in these lines can contribute to oil loss. By identifying these common problems, DIYers can take proactive steps to inspect and address these issues, ensuring their Impala remains in optimal condition.

How urgent is it to address the oil leak in a 2012 Chevrolet Impala to prevent potential engine damage?

Addressing an oil leak in your 2012 Chevrolet Impala is not just a matter of routine maintenance; it is a critical step in safeguarding your engine's health and performance. Oil plays a vital role in lubricating engine components, and a leak can lead to insufficient lubrication, resulting in increased friction and wear on essential parts. This can escalate quickly, as low oil levels may cause the engine to overheat, potentially leading to catastrophic failure. Moreover, neglecting an oil leak can allow oil to contaminate other systems, such as the cooling system, compounding the risk of damage. Regularly checking your oil levels and promptly addressing any leaks is essential for maintaining your vehicle's longevity and avoiding costly repairs. By taking immediate action, you not only protect your engine but also ensure a safer driving experience.

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