Engine Camshaft Position Sensor: 2018-2023 Chevrolet Traverse
Understanding why your Traverse is stalling or has a Check Engine light and how to fix it.
- Your 2018-2023 Traverse has four camshaft position sensors; failure of any one can cause stalling, rough running, and starting issues.
- Error codes like P0340 and P0341 are common, but be aware that on the 3.6L engine, these can sometimes point to a more serious timing chain problem.
- For reliability, choose premium aftermarket brands like ACDelco, Delphi, or NTK.
- While some sensors are easy to access, others are difficult, significantly impacting labor costs for professional replacement.
Is Your Traverse Stalling or Running Rough?
A failing camshaft position sensor can cause serious problems. The most common sign is the Check Engine Light coming on. You might also notice your engine is hard to start, or it stalls unexpectedly. Some owners report the engine runs rough, hesitates when they accelerate, and gets poor gas mileage. In some cases, a bad sensor can prevent the engine from starting at all.
Important: Timing Chain Issues
Sometimes, camshaft position sensor error codes (like P0008, P0017) on the 3.6L V6 engine are not caused by a bad sensor. They can be a symptom of a much more serious problem: a stretched timing chain. If you have these codes, it's wise to have a professional mechanic diagnose the issue to rule out timing chain failure before you replace the sensors.
Choosing the Right Aftermarket Sensor
When you're shopping for a new camshaft position sensor, you have options ranging from OEM-quality parts to budget-friendly alternatives. For a critical sensor like this, quality matters.
- Premium Aftermarket (ACDelco, Delphi, NTK): ACDelco is the original GM parts provider, offering a direct replacement for fit and function. Delphi is another top-tier OEM supplier known for quality. NTK (a brand of NGK) is also highly regarded for its sensors, often emphasizing enhanced durability. These brands are your best bet for reliability and are recommended by many repair professionals.
- Quality Mid-Range (Dorman, Standard Ignition, Holstein): Brands like Dorman offer a direct replacement that matches the original's function and is often more affordable. They are a popular choice for DIY repairs. Standard Ignition (SMP) and Holstein are also well-known aftermarket brands that provide reliable alternatives.
- Value-Oriented (Spectra, Walker, etc.): These brands provide a functional part at the lowest price point. While they can be a good short-term solution, their long-term durability may not match that of the premium brands.
Pro Tip: Replace in Sets?
Your Traverse has four camshaft position sensors. If one fails and the others are original, it's often a good idea to replace all of them at the same time, especially if the engine cover and other components need to be removed for access. This can save you from having to do the same labor-intensive job again in the near future.
Cost to Replace a Camshaft Position Sensor
The cost can vary depending on whether you do it yourself or go to a shop. The sensors themselves are not very expensive, but labor can be a significant part of the cost because some sensors are difficult to access.
| Cost Category | Estimated Price Range |
|---|---|
| New Aftermarket Sensor (Single) | $18 - $83 |
| New OEM Sensor (Single) | $40 - $100 |
| Shop Labor Cost (per sensor) | $75 - $224 |
| Total Professional Replacement (per sensor) | $181 - $325+ |
Frequently Asked Questions
How many camshaft position sensors does my 2018-2023 Traverse have?
The 3.6L V6 engine used in the 2018-2023 Chevrolet Traverse has four camshaft position sensors. There is one intake sensor and one exhaust sensor for each of the two cylinder banks.
What are the common error codes for a bad camshaft sensor?
The most common codes are P0340 (Camshaft Position Sensor 'A' Circuit Malfunction Bank 1) and P0341 (Camshaft Position Sensor 'A' Circuit Range/Performance Bank 1). You might also see codes P0342, P0343, P0345, P0346, P0366, P0367, P0368, P0391, P0392, or P0393, which specify different sensors (intake/exhaust, bank 1/2) and different fault types (low voltage, high voltage, performance).
Can I replace the camshaft position sensor myself?
Yes, this is a DIY-feasible job for someone with moderate mechanical skill. However, the difficulty varies greatly depending on which of the four sensors has failed. The sensors on the front of the engine are much easier to access than the ones on the rear bank, which is close to the firewall. Replacing the rear sensors may require removing the engine mount and other components to create space.
What happens if I don't replace a failing sensor?
Ignoring a bad camshaft position sensor can lead to progressively worse problems. You'll likely experience poor fuel economy, rough engine performance, and hesitation. The most serious risk is the engine stalling while you are driving, which is a major safety hazard. It could also lead to a no-start condition, leaving you stranded.
Technical Specifications
OEM Part Numbers: 12684186 12615371
The 3.6L V6 engine in the 2018-2023 Traverse uses four 3-pin blade terminal Hall effect sensors. There are two intake and two exhaust sensors, one of each per cylinder bank.
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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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