Chevrolet SS Manifold Absolute Pressure (MAP) Sensor: A Complete Guide for 2014-2017
Is your Chevy SS running rough or losing power? Your MAP sensor could be the culprit.
- A failing MAP sensor will cause poor performance like rough idle and hesitation, but it is unlikely to leave you stranded.
- This is an easy DIY replacement that takes less than 15 minutes with basic tools.
- For best results, choose an OEM-supplier brand like ACDelco, Bosch, or Delphi to ensure accurate readings for the LS3 engine.
- There are no known recalls for this specific part; failure is due to normal wear and tear.
Is Your MAP Sensor Failing?
A faulty Manifold Absolute Pressure (MAP) sensor can cause noticeable problems in your Chevrolet SS. Because this sensor directly affects the air-fuel mixture and ignition timing, a bad reading can throw your engine's performance off balance. You won't be left stranded, but you will experience issues that should be addressed quickly.
Key Symptoms of a Bad MAP Sensor:
- Check Engine Light: This is often the first sign. You will likely see trouble code P0106, which points to a MAP sensor performance issue.
- Rough Idle: Your engine may vibrate or struggle to maintain a steady RPM when stopped.
- Poor Acceleration: The car may feel sluggish, hesitate, or lack its usual power when you step on the gas.
- Decreased Fuel Economy: If the sensor tells the computer to send too much fuel, your gas mileage will suffer.
- Black Smoke from Exhaust: An overly rich fuel mixture can result in black smoke coming from your tailpipe.
No Recalls or TSBs
Searches of the National Highway Traffic Safety Administration (NHTSA) database show no recalls or technical service bulletins (TSBs) specifically for the MAP sensor on the 2014-2017 Chevrolet SS. Known recalls for this vehicle relate to power steering, airbags, and seat belts.
Choosing the Right Aftermarket MAP Sensor
When replacing the MAP sensor on your SS, you have several options. The original part is made by ACDelco, GM's official parts brand. However, high-quality aftermarket parts can offer the same performance for a similar price.
| Brand Tier | Brands | Quality & Reliability Assessment |
|---|---|---|
| OEM Supplier / Premium Aftermarket | Bosch, Delphi, ACDelco (OEM) | These brands are often original equipment suppliers to GM. Bosch is known to manufacture the sensor for GM's LS3 engine. They provide the highest level of reliability and accuracy, which is critical for this sensor. Choosing one of these is the safest bet for long-term performance. |
| Reputable Aftermarket | NGK, Standard Ignition (SMP) | These are well-known brands that produce reliable parts. They are a solid choice if an OEM-supplier brand is not available, offering a good balance of quality and cost. |
| Economy Aftermarket | Walker Products, Facet, Global Parts, True Tech | These brands provide a lower-cost alternative. While functional, they may not have the same long-term durability or precise calibration as premium options. For a critical sensor like the MAP, it's often worth spending a little more for a premium brand to avoid future performance issues. |
Pro Tip: Stick with What Works
For a high-performance engine like the LS3 in your SS, sensor accuracy is key. An inaccurate MAP sensor can hurt performance and fuel economy. Sticking with an OEM brand like ACDelco or a known OEM supplier like Bosch or Delphi is highly recommended to ensure your SS runs as it should.
Frequently Asked Questions (FAQ)
Where is the MAP sensor located on my 2014-2017 Chevy SS?
The MAP sensor on the LS3 engine is located directly on the intake manifold. It is typically found at the front of the manifold, held in place by a single bolt, making it very easy to access.
Can I replace the MAP sensor myself?
Yes, this is a very simple job for a DIYer. The process involves unplugging the electrical connector, removing one bolt, and swapping the sensor. The entire job can usually be done in less than 15 minutes with basic tools.
Do I need to disconnect the battery to change the MAP sensor?
It is always a good practice to disconnect the battery's negative terminal before working on any electrical sensor. This prevents any accidental short circuits. After replacement, the check engine light may turn off on its own after a few drive cycles, or you can clear it with an OBD-II scanner.
What is the OEM part number for the Chevy SS MAP sensor?
The most common OEM GM and ACDelco part number for the MAP sensor that fits the 2014-2017 Chevrolet SS is 55573248.
Technical Specifications
OEM Part Numbers: 55573248
1-Bar, Bolt-In Style Sensor
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.
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