GMC Acadia Engine Oil Pressure Switch Guide (2017-2023)
Is your Acadia's oil light on? Here’s what you need to know about a faulty engine oil pressure switch.
- Do not drive your Acadia if the oil pressure light is on; you risk severe engine damage.
- A faulty sensor is a common issue, but a professional diagnosis is needed to rule out a real oil pressure problem like a bad oil pump.
- The sensor is difficult to access, making professional installation a good choice for most owners.
- Quality aftermarket brands like Standard Ignition and Walker Products are reliable, cost-effective alternatives to OEM parts.
Is Your Acadia's Oil Light On? Don't Ignore It.
Seeing the oil pressure warning light on your 2017-2023 GMC Acadia can be alarming. While it can signal a serious engine problem, it is often caused by a faulty engine oil pressure switch. This sensor is a known common failure point on many GM vehicles. This article will help you understand the symptoms, choose the right aftermarket replacement part, and know what to expect for repair costs.
Stop Driving Immediately
If your oil pressure light comes on, you should not continue to drive. While it might just be a bad sensor, it could also be a real lack of oil pressure that can destroy your engine. Pull over safely, turn off the engine, and check your oil level using the dipstick. If the oil level is normal, it's safer to have the vehicle towed to a shop for diagnosis.
Symptoms of a Failing Oil Pressure Switch
A bad oil pressure switch on your Acadia will usually make itself known in a few ways:
- Oil Pressure Light On: The most common symptom is the oil pressure warning light coming on or flickering, even when the engine oil level is correct.
- Check Engine Light: The switch can also trigger the check engine light. You may find trouble codes like P0521, P0522, or P0523 when you scan the vehicle. 🎬 Watch: How to diagnose a P0521 failed sender code
- Incorrect Gauge Readings: If your Acadia has a digital oil pressure gauge, it might read zero, show maximum pressure, or jump around randomly.
- Oil Leaks: The sensor itself can fail and leak oil. You might see oily residue on or below the sensor, which is located near the oil filter.
Choosing the Right Aftermarket Part
For the 2017-2023 GMC Acadia, the original equipment (OEM) sensor is a common replacement. However, quality aftermarket brands offer a reliable and more affordable solution. Since this is a frequent failure part, choosing a reputable aftermarket brand is a smart financial decision without sacrificing quality.
Brand Tiers for Your Acadia
- Premium Aftermarket (Standard Ignition, Walker Products): These brands are well-known in the auto repair industry. They design their parts to meet or exceed the original factory specifications. Brands like Standard Ignition perform 100% testing on their switches and use high-grade materials for durability. Walker Products also emphasizes OE-quality and testing. These are excellent choices for a long-lasting repair.
- Standard/Value (Global Parts): This category includes brands that focus on providing a functional part at a lower price point. While they meet the basic requirements to work on your vehicle, they may not have the same level of testing or use the same premium materials as the higher-tier brands. They can be a good option if budget is the primary concern.
Pro Tip: Check for a Filter
Some GM oil pressure switches use a small filter screen below the sensor. A clogged screen can also cause pressure reading issues. Some premium aftermarket kits, like those from Standard, may include a new filter with the switch. It's a good idea to replace this filter at the same time as the sensor.
Replacement Cost for 2017-2023 GMC Acadia
The cost to replace the engine oil pressure switch depends on whether you do it yourself or hire a professional mechanic.
| Part / Service | Estimated Cost |
|---|---|
| New Aftermarket Part | $46 - $62 |
| New OEM Part | $80 - $115 |
| Shop Labor | $122 - $179 |
| Total Professional Replacement | $170 - $270 |
Frequently Asked Questions
Is this a known issue on the GMC Acadia?
Yes, a faulty oil pressure switch is a common problem for many GM vehicles, including the Acadia. There is also a GM Technical Service Bulletin (TSB 20-NA-161) for the P0521 code that can be caused by a sticking oil pressure relief valve in the oil pump, so proper diagnosis is important.
🎬 Learn more about fixing the P0521 code on your GM vehicleCan I replace the oil pressure switch myself?
Yes, this is a possible DIY job for someone with mechanical experience. However, the sensor is in a very tight location near the oil filter on the 3.6L V6 engine. You will need to remove the oil filter and use special tools like a 1 1/16-inch deep socket and wobble extensions to reach it. For many owners, having a shop perform the repair is easier.
🎬 See this step-by-step GMC Acadia oil pressure sensor replacementWhere is the oil pressure switch located on my Acadia?
On the 2017-2023 Acadia with the 3.6L V6 engine, the oil pressure switch is screwed into the engine block, right next to the oil filter housing. You will need to look down past the front of the engine to see it.
Are there any recalls for this part?
No, as of early 2026, there are no active recalls from the NHTSA specifically for the engine oil pressure switch on the 2017-2023 GMC Acadia.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12635397 12637356 12673134
The switch for the 2017-2023 GMC Acadia is typically a 3-pin sensor with a flat connector. A special 1 1/16-inch deep socket is often required for removal and installation.
We Have This Part in Stock
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.
- GMC Acadia:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Acadia's Oil Light On? Don't Ignore It.
- Stop Driving Immediately
- Symptoms of a Failing Oil Pressure Switch
- Choosing the Right Aftermarket Part
- Brand Tiers for Your Acadia
- Pro Tip: Check for a Filter
- Replacement Cost for 2017-2023 GMC Acadia
- Frequently Asked Questions
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