Cadillac SRX (2011-2016) Engine Camshaft Position Sensor Guide
Understanding the camshaft position sensor in your 2011-2016 Cadillac SRX and how to choose the right replacement.
- Your SRX has either two (3.0L V6) or four (3.6L V6) camshaft position sensors; identify the correct failed sensor before buying.
- Symptoms include a check engine light (P0340, P0345), hard starting, rough idle, and poor acceleration.
- For best results and longevity, choose an OEM/OES brand like ACDelco or Delphi.
- While some sensors are easy to replace, others are very difficult, significantly impacting labor time and cost.
Understanding Your SRX's Camshaft Position Sensors
A key detail for 2011-2016 Cadillac SRX owners is the number of camshaft position sensors your engine has. The 2011 model with the 3.0L V6 engine has two sensors. For 2012-2016 models equipped with the more common 3.6L V6 (engine code LFX), there are four camshaft position sensors. These are for the intake and exhaust camshafts on each cylinder bank. When a sensor fails, your diagnostic trouble code should specify which bank and which camshaft (intake or exhaust) is having the issue, for example, with a code like P0340 for "Bank 1."
Symptoms of a Failing Camshaft Position Sensor
When a camshaft position sensor starts to fail, your SRX will let you know. The symptoms can range from minor annoyances to serious problems that prevent the car from running.
- Check Engine Light: This is often the first sign. Codes like P0340, P0341, P0345, or P0365 🎬 Learn more about diagnosing and fixing the P0340 error code. often point to a camshaft sensor circuit problem.
- Difficulty Starting: The engine may crank for a long time before starting, or it may not start at all.
- Rough Idle and Stalling: The engine may run unevenly or stall, especially at low speeds.
- Poor Acceleration: You may notice your SRX feels sluggish or hesitates when you press the gas pedal.
- Reduced Fuel Economy: Incorrect timing can cause the engine to use more fuel than necessary.
Related Serious Issues
While a faulty sensor is a common issue, trouble codes like P0016, P0017, P0018, or P0019 can sometimes indicate a more severe problem with stretched timing chains, a known issue on some GM V6 engines. If you have these codes, it is critical to have your vehicle professionally diagnosed to rule out timing chain failure 🎬 See how timing chain issues differ from simple sensor failures. before simply replacing a sensor.
Choosing the Right Aftermarket Sensor
When replacing a camshaft position sensor, you have several options ranging from OEM to various aftermarket brands. Here’s how they generally stack up for your SRX:
- Tier 1: OEM/OES Brands (ACDelco, Delphi): ACDelco is the original equipment (OE) supplier for General Motors. Delphi was a longtime OE supplier for GM and their parts are often identical to the original. Choosing either of these brands is the safest bet for fit, function, and longevity. They are the benchmark for quality.
- Tier 2: Quality Aftermarket (NGK/NTK, Standard Ignition, Dorman): Brands like NGK (under their NTK sensor line), Standard Motor Products (SMP), and Dorman are well-regarded in the aftermarket. They engineer their parts to meet or exceed OE specifications and are a reliable choice if an OEM part isn't available or you're looking for a balance of quality and price.
- Tier 3: Economy Brands (Global Parts, True Tech, Walker Products, etc.): These brands offer a budget-friendly option. While they can work, their long-term reliability and consistency can be a gamble. They may be a suitable choice for an older, higher-mileage vehicle where cost is the primary concern, but be aware that you might be replacing it again sooner than you would with a higher-tier part.
Pro Tip: Before replacing the sensor, inspect the wiring and connector. A loose connection or damaged wire can cause the same symptoms as a failed sensor. Also, it's a good practice to replace the O-ring seal with the sensor to prevent oil leaks.
Cost to Replace a Camshaft Position Sensor
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Sensor (per sensor) | $24.60 - $56.86 |
| New OEM Sensor (per sensor) | $40 - $75 |
| Shop Labor | $100 - $250 |
Note: Labor costs can vary significantly based on which of the four sensors on the 3.6L V6 needs replacement. Some are easily accessible, while others require removing other components, increasing labor time.
Frequently Asked Questions
How many camshaft position sensors does my 2011-2016 SRX have?
If you have the 2011 model with the 3.0L V6, you have two sensors. If you have a 2012-2016 model with the 3.6L V6, your engine has four sensors: an intake and an exhaust sensor for each cylinder bank.
Can I replace the camshaft position sensor myself?
For many DIYers, yes. On the SRX's V6 engines, some sensors are easily accessible on the front or top of the engine, held by a single 10mm bolt. However, other sensors, particularly on the firewall side (Bank 1), can be very difficult to reach and may require removing other components or even supporting the engine to gain access. Reviewing a vehicle-specific video tutorial 🎬 Watch this detailed DIY guide for replacing all four SRX sensors. is highly recommended before starting.
Is there a recall for the camshaft position sensor on the 2011-2016 SRX?
No, there are no specific recalls issued by the NHTSA for the camshaft position sensors on these vehicles. There are recalls for rear suspension toe links and other unrelated issues.
What's the difference between ACDelco GM Genuine and ACDelco Gold/Professional?
ACDelco GM Genuine parts are the same parts your vehicle was built with at the factory. ACDelco Gold (formerly Professional) parts are high-quality aftermarket parts manufactured to meet GM's standards, but may not be made by the original supplier. For a critical sensor, the GM Genuine part is the recommended choice for guaranteed compatibility.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12684186
Number of Sensors: Two (2) for 2011 3.0L V6 engine. Four (4) for 2012-2016 3.6L V6 engine. Sensor Type: Hall Effect. Connector: 3-Pin.
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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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