GMC Canyon Camshaft Position Sensor Guide for 2014-2021 Models
Fix check engine lights and running issues by understanding your Canyon's camshaft position sensors.
- Your Canyon has multiple sensors: the 3.6L V6 has four, while the 2.5L I4 and 2.8L Duramax have two.
- Before replacing a sensor, check your oil level and inspect the engine wiring harness for chafing, especially on 2015-2019 models (TSB 18-NA-307).
- Symptoms include a check engine light (codes P0340, P0341, etc.), stalling, rough running, and no-start conditions.
- Replacement is a simple, single-bolt job, but access to the sensors on the V6 engine can be challenging.
Is Your Canyon Running Rough? It Could Be a Camshaft Position Sensor
A failing camshaft position sensor can cause a range of frustrating problems, from a simple check engine light to your truck not starting at all. Understanding the symptoms and your replacement options is key to getting your GMC Canyon running properly again.
Symptoms of a Bad Camshaft Position Sensor
When a camshaft position sensor starts to fail, your truck's computer gets confusing information. This can lead to several noticeable problems:
- Check Engine Light: This is the most common symptom. You will likely see error codes like P0340, P0341, P0345, or P0346 when you scan the vehicle.
- Engine Won't Start: The engine may crank but refuse to start because the computer doesn't know when to fire the injectors and spark plugs.
- Engine Stalling: Your truck might stall unexpectedly while driving or when idling at a stoplight.
- Rough Idle and Misfires: The engine may shake, shudder, or sound rough because the combustion timing is off.
- Reduced Power: Your Canyon may feel sluggish and have poor acceleration because the engine isn't running efficiently.
Vehicle-Specific Issue: Check Wiring First (2015-2019)
Before replacing any sensors, inspect the engine wiring harness. GM issued Technical Service Bulletin (TSB) 18-NA-307 for 2015-2019 Canyons because the harness can rub against the edge of the camshaft cover. This can damage the wires and cause codes like P0365 and P0366, making you think a sensor has failed when it's actually a wiring problem. Repairing the wire and protecting the harness may be the only fix needed.
Choosing an Aftermarket Camshaft Position Sensor
When replacing this part, you have a choice between Original Equipment (OEM) and aftermarket parts. For critical electronic sensors, many professional mechanics prefer using OEM (ACDelco) or premium aftermarket brands like Delphi or Bosch for the best reliability. However, standard aftermarket parts, often sold under brand names like 'Replacement', offer a more budget-friendly option. These parts are designed to meet the original factory specifications and function correctly, providing a cost-effective solution for your repair.
Pro Tip: Check Your Oil Level
Before you buy any parts, check your engine oil. A very low oil level can affect the variable valve timing system and sometimes trigger the same trouble codes as a bad camshaft position sensor.
Replacement Costs
The cost to replace a single camshaft position sensor can vary. Keep in mind that the V6 engine has four sensors, so your total cost could be higher if multiple sensors need replacement.
| Part Type | Cost (Part Only) |
|---|---|
| New Aftermarket | $25 - $32 |
| New OEM (ACDelco) | $30 - $65 |
| Shop Labor | $70 - $160 |
Frequently Asked Questions
Where are the camshaft position sensors located on my GMC Canyon?
The location depends on your engine. On the 3.6L V6, there are four sensors located at the very back of the cylinder heads, near the firewall, which can be difficult to reach. 🎬 See this video to locate all four sensors on the V6. On the 2.5L I4 engine, there are two sensors on the cylinder head that are generally easier to access.
Can I replace a camshaft position sensor myself?
Yes, this is a DIY-friendly job for many owners. The sensor is held in by a single 10mm bolt. The main challenge is access, especially for the rear sensors on the V6 engine. Basic hand tools are all that's required.
🎬 Watch: A step-by-step walkthrough for replacing the sensor yourself.Is there a recall for the camshaft position sensor?
No, there are no specific recalls for the camshaft position sensor itself on the 2014-2021 GMC Canyon. There is, however, a special coverage program (N232430470) for 2020 models for a related but different part called the 'camshaft position actuator valve solenoid'. If you have a 2020 model, it's worth checking with a dealer if you have issues.
How many camshaft position sensors does my Canyon have?
If you have the 3.6L V6 engine, your truck has four sensors (two for intake cams, two for exhaust cams). If you have the 2.5L I4 or 2.8L Duramax engine, you have two sensors.
Helpful Videos
Technical Specifications
Number of sensors varies by engine: Four (4) for 3.6L V6, Two (2) for 2.5L I4, Two (2) for 2.8L Duramax Diesel.
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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