Cadillac SRX (2004-2016) Manifold Absolute Pressure (MAP) Sensor Replacement Guide
Fix poor engine performance and bad fuel economy in your SRX by understanding and choosing the right MAP sensor.
- A bad MAP sensor on an SRX commonly causes a check engine light (P0106, P0107), rough idle, and poor acceleration.
- Replacement is very easy for a DIYer, typically requiring only a single Torx screwdriver and about 15 minutes.
- For best results, choose an OEM brand like ACDelco or a premium aftermarket brand like Bosch or Delphi.
- Before replacing the sensor, check for simple issues like cracked or disconnected vacuum hoses, which can cause similar symptoms.
Is Your SRX's MAP Sensor Failing?
A bad Manifold Absolute Pressure (MAP) sensor can cause a range of noticeable engine problems. Because the sensor's data is critical for managing the air-fuel mixture, a faulty one can make your Cadillac SRX run poorly. You might notice one or more of these issues, which can range from annoying to serious.
Symptoms of a Bad MAP Sensor
If your MAP sensor is going bad, your SRX will likely let you know. Here are the most common signs:
- Check Engine Light: This is often the first sign. The car's computer will detect a problem with the MAP sensor's signal and trigger a warning light. Common trouble codes include P0106 (sensor performance issue), P0107 (sensor circuit low), and P0108 (sensor circuit high).
- Rough Idle: Your engine may shake, vibrate, or struggle to maintain a steady speed when stopped. This happens because the incorrect sensor reading causes an imbalanced air-fuel mixture.
- Poor Acceleration & Loss of Power: The car might feel sluggish, hesitate, or lack its usual power when you press the gas pedal. This is due to the ECU being unable to provide the right amount of fuel for the engine's load.
- Bad Fuel Economy: If your SRX is suddenly using more gas than usual, a bad MAP sensor could be the cause. The engine may be running "rich," meaning it's getting too much fuel.
- Black Smoke from Exhaust: An overly rich fuel mixture can result in black smoke coming from the tailpipe, which is unburnt fuel.
Choosing the Right Aftermarket MAP Sensor for Your SRX
When replacing the MAP sensor on your 2004-2016 SRX, you have several quality options. You don't have to buy the part from a Cadillac dealer to get a reliable replacement.
Brand Quality Tiers
- OEM & Premium Aftermarket (ACDelco, Bosch, Delphi): ACDelco is the original equipment parts brand for General Motors, so it's a direct replacement for the factory part. Bosch and Delphi are also top-tier manufacturers that often supply original parts to carmakers and are known for their quality and reliability. For guaranteed fit and performance, these brands are your best choice.
- Quality Aftermarket (Standard Ignition, NGK/NTK, Walker Products, Holstein): These brands have a strong reputation in the aftermarket. They produce reliable sensors that meet or exceed OEM specifications and offer a great balance of quality and price.
- Standard/Value (Facet, Vemo, True Tech, etc.): These brands provide a more budget-friendly option. While they can be a good value, they may not always have the same long-term durability or precise calibration as the premium brands.
Cost of Replacing a Cadillac SRX MAP Sensor
The cost to replace the MAP sensor is reasonable, especially if you do it yourself. The part itself is not expensive, and labor is minimal due to its easy accessibility.
| Part/Service | Estimated Cost |
|---|---|
| New OEM (Dealer) | $45 - $126 |
| New Aftermarket | $36 - $95 |
| Shop Labor | $40 - $59 |
| Total Professional Replacement | $92 - $154 (approx.) |
Frequently Asked Questions (FAQ)
Where is the MAP sensor located on my Cadillac SRX?
The MAP sensor is typically mounted directly on the intake manifold. On the second-generation SRX (2010-2016) with the 3.0L or 3.6L V6 engine, it is located on top of the intake manifold, often toward the back. It is a small, black plastic sensor held in by a single bolt (usually a T25 or T30 Torx) and has an electrical connector attached.
Can I clean the MAP sensor instead of replacing it?
Sometimes, cleaning the sensor can resolve issues, especially if it's contaminated with oil or carbon buildup. You can remove the sensor and carefully spray it with a dedicated Mass Airflow (MAF) or electronics cleaner. Do not touch the internal sensing element. If cleaning doesn't solve the problem, the sensor has likely failed electronically and needs to be replaced.
Are there any recalls for the SRX MAP sensor?
A search of NHTSA records did not show any specific recalls for the Manifold Absolute Pressure sensor on the 2004-2016 Cadillac SRX. There have been other recalls for this vehicle, including for suspension and airbag issues, but none directly targeting the MAP sensor.
Is ACDelco the same as the original GM part?
Yes. ACDelco is the official parts division of General Motors. Choosing an "ACDelco GM Original Equipment" part ensures you are getting the same component that was designed, tested, and validated for your SRX by GM engineers. Delphi was also a part of GM and is a trusted OEM-quality supplier.
Technical Specifications
OEM Part Numbers: 12575467 55573248 19418808 12591290
The MAP sensor for the Cadillac SRX is a 3-wire sensor that provides a variable voltage signal to the ECU based on manifold pressure. It receives a 5-volt reference and a ground from the ECU.
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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.
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