Guide to the 2014-2020 Chevrolet Impala Engine Oil Pressure Switch
Fixing flickering oil lights and protecting your Impala's engine starts with a reliable oil pressure switch.
- A faulty oil pressure switch is a very common cause for oil warnings on the 2014-2020 Impala.
- Always check the oil level first; never assume a warning light is just a bad sensor.
- Diagnostic codes like P0521 are a strong clue that the sensor or its circuit is the problem.
- A quality aftermarket brand like Standard Ignition or Walker Products is a reliable and cost-effective choice for this repair.
Is Your Impala's Oil Light Lying to You?
A flickering oil light or a "Low Oil Pressure" warning on the dash of your 2014-2020 Impala can be alarming. However, many times the issue isn't a dangerous lack of oil pressure, but simply a failed engine oil pressure switch. These sensors can fail over time, leading to incorrect readings, constant or flashing warning lights, and check engine light codes like P0521, P0522, or P0523. 🎬 See how to fix a P0521 check engine code yourself. Before assuming the worst, it's important to verify if the sensor itself is the culprit, as it's a common and relatively inexpensive fix.
Common Symptoms of a Failing Oil Pressure Switch
- Flickering or Constant Oil Warning Light: The most common symptom is the oil pressure light on your dashboard turning on, especially if you've checked the oil level and it's correct.
- Incorrect Gauge Readings: If your Impala has an oil pressure gauge, you might see it read zero, max out, or jump around erratically.
- Check Engine Light: A faulty sensor can trigger a check engine light. Common codes include P0521, P0522, and P0523.
- Oil Leaks from the Sensor: Sometimes, the sensor itself can develop a leak. You might see oil on the sensor body or its electrical connector.
Don't Ignore the Warning
While the sensor is often the problem, a low oil pressure warning can also indicate a serious engine issue. Always check your oil level first. If the level is good but the light stays on, it's best to have the actual oil pressure tested with a mechanical gauge to rule out a more severe problem before replacing the sensor.
Choosing the Right Aftermarket Part
When replacing the oil pressure switch, you don't have to buy an expensive OEM part from the dealer. Several reputable aftermarket brands offer quality replacements that provide excellent value. Here’s a look at your options:
Brand Tiers
- Premium Aftermarket (Standard Ignition, Walker Products): Brands like Standard Ignition (Standard Motor Products) and Walker Products are well-regarded in the aftermarket. They are known for producing parts that meet or exceed OEM specifications and are a reliable choice for this repair. Many professional mechanics trust these brands for their quality and durability.
- Value-Oriented (URO Parts, True Tech, Global Parts): Brands like URO Parts offer a more budget-friendly option. While some of their parts have a reputation for mixed quality, they can be a viable choice for a simple component like a switch, especially if cost is a major factor. For less common brands like True Tech and Global Parts, it's harder to find consistent reviews, so they may be more of a gamble.
Pro Tip: Check for a Filter
On some GM engines, there is a small filter screen located in the block underneath the oil pressure sensor. This screen can become clogged and cause pressure reading issues. When you replace the sensor, it's a good idea to check and clean or replace this filter if it's accessible. Some replacement kits from brands like Standard Ignition may include this filter.
Cost of Replacing the Engine Oil Pressure Switch
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Part | $23.80 - $65.68 |
| New OEM Part | $60 - $90 |
| Shop Labor | $100 - $250 |
Note: Labor costs can vary significantly based on your location and which engine your Impala has. The sensor on the 3.6L V6 is harder to access than on the 2.5L 4-cylinder, which increases labor time.
Frequently Asked Questions (FAQ)
Where is the oil pressure switch on a 2014-2020 Impala?
The location depends on your engine. For the 2.5L 4-cylinder engine, the switch is located on the back of the engine, under the intake manifold. 🎬 Watch this walkthrough for replacing the sensor on the 2.5L engine. For the 3.6L V6 engine, it is also in a difficult-to-reach spot, typically on the engine block near the oil filter housing, which can be challenging to access.
Can I replace the oil pressure switch myself?
For a DIYer with some experience, this is a possible job. However, the location can be tight, especially on the V6 model. You will need a special deep socket (often 1-1/16" or 27mm) to remove the old sensor. 🎬 Watch a mechanic demonstrate how to access and swap the sensor. Due to the difficult access, what seems like a simple part swap can take more time than expected. If you are not comfortable working in tight spaces, it may be best to leave this to a professional.
Are there any recalls for the oil pressure switch on the Impala?
As of now, there are no specific recalls from the NHTSA for the engine oil pressure switch on the 2014-2020 Chevrolet Impala. However, there is a Special Coverage Adjustment (N192289160) for the 2014 Impala with the 2.5L engine concerning the rocker arm oil control valve, which can also affect oil pressure and cause engine-related symptoms.
Should I buy an OEM or aftermarket oil pressure switch?
For this part, a high-quality aftermarket switch from a reputable brand like Standard Ignition or Walker Products is a perfectly acceptable and cost-effective alternative to the OEM part. These brands often manufacture parts to the same, if not better, standards. Avoid the cheapest options from unknown brands, as they are more likely to fail prematurely.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12677836 25202591
Requires a 1-1/16 inch (27mm) deep well socket for removal and installation.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Chevrolet Impala:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Impala's Oil Light Lying to You?
- Common Symptoms of a Failing Oil Pressure Switch
- Don't Ignore the Warning
- Choosing the Right Aftermarket Part
- Brand Tiers
- Pro Tip: Check for a Filter
- Cost of Replacing the Engine Oil Pressure Switch
- Frequently Asked Questions (FAQ)
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