GMC Canyon Engine Crankshaft Position Sensor: A 2014-2024 Guide
Address stalling, no-start, and rough idle issues by understanding your Canyon's crankshaft position sensor.
- A failing sensor is a critical issue that can cause your Canyon to stall without warning or fail to start at all.
- Common symptoms include a Check Engine Light with codes P0335 or P0336, rough idle, and sudden stalling.
- For best results, use OEM-supplier brands like ACDelco or Delphi; a crankshaft variation relearn procedure with a scan tool is often necessary after replacement.
- On 2.8L Duramax models, a P0336 code can also be caused by a more serious internal failure of the crankshaft reluctor ring.
Is Your GMC Canyon Stalling or Hard to Start?
A failing crankshaft position sensor is a common reason for a GMC Canyon that suddenly stalls, refuses to start, or runs rough. This sensor is vital for engine operation, and when it begins to fail, it can cause a range of frustrating and potentially dangerous symptoms. Because a complete failure can leave you stranded, it's a part that should be replaced as soon as problems are confirmed.
Choosing the Right Aftermarket Crankshaft Sensor
When replacing a critical electronic part like the crankshaft position sensor, the brand you choose matters. While many options are available, they generally fall into different quality tiers.
- OEM-Supplier Brands (Highest Reliability): Brands like ACDelco (the original GM parts brand) and Delphi are often the original equipment manufacturers. Choosing these brands gives you the highest confidence that the part will perform exactly like the one that came from the factory. For a part this critical, sticking with an OEM supplier is a sound investment in reliability.
- High-Quality Aftermarket (Trusted Alternatives): Brands such as Hitachi, NGK/NTK, and Standard Ignition (SMP) have a strong reputation for producing reliable electronic components. They are excellent alternatives to OEM parts, often providing similar quality at a slightly lower price point.
- Value-Oriented Brands (Budget-Friendly): Companies like Dorman, Walker Products, and Holstein offer cost-effective solutions. While they are a direct fit, some owners report a higher chance of premature failure with budget sensors on other vehicles. For a sensor that can cause a no-start or stalling condition, weigh the upfront savings against the potential for future issues.
Pro Tip: Plan for a Relearn Procedure
After replacing the crankshaft position sensor on your GMC Canyon, a "Crankshaft Position Variation Relearn" procedure is often required. This procedure uses a compatible scan tool to calibrate the new sensor to your engine's specific characteristics, ensuring accurate timing and preventing false misfire codes like P1336. Many repair shops can perform this, or it can be done with a high-end DIY scan tool.
🎬 Watch how to perform a crankshaft variation relearn on your Canyon.Known Issues for the 2014-2024 GMC Canyon
While there are no widespread recalls for the crankshaft position sensor itself on these trucks, some related issues are worth noting:
- 2.8L Duramax Diesel Reluctor Ring: On the 2.8L Duramax engine, a known issue is the failure of the crankshaft reluctor ring (also called an exciter ring). This ring can break or slip, causing a crank-no-start condition and triggering a P0336 code. Diagnosis involves removing the sensor to visually inspect the ring. This is a much more involved repair than replacing the sensor itself. 🎬 See how to diagnose a broken 2.8L Duramax reluctor ring.
- Wiring and Connectors: In any vehicle, wiring can become damaged from heat, oil leaks, or chafing. Before replacing the sensor, always inspect the wiring harness and connector for any visible damage, as this can cause the same symptoms as a failed sensor.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Sensor | $21.96 - $86.58 |
| New OEM (ACDelco) Sensor | $35 - $75 |
| Shop Labor for Installation | $100 - $200 |
Frequently Asked Questions (FAQ)
What are the most common signs of a bad crankshaft sensor?
The most common symptoms are the engine cranking but not starting, stalling unexpectedly while driving, a rough idle, engine misfires, and the Check Engine Light illuminating with codes like P0335 or P0336.
Can I replace the crankshaft sensor myself?
Yes, for many DIYers this is a manageable job. The sensor is typically held by a single bolt and is located on the lower part of the engine block. Access can be tight depending on your engine (2.5L, 3.6L, or 2.8L Diesel). The key challenge is the potential need for the crankshaft variation relearn procedure afterward, which requires a specific scan tool.
What is a P0335 or P0336 code?
P0335 (Crankshaft Position Sensor "A" Circuit Malfunction) means the ECM is receiving no signal from the sensor. P0336 (Crankshaft Position Sensor "A" Circuit Range/Performance) means the signal is erratic, intermittent, or incorrect, which can be caused by a bad sensor or a damaged reluctor ring.
🎬 Learn more about common causes and fixes for the P0336 code.Why did my cheap replacement sensor fail so quickly?
Crankshaft sensors operate in a high-heat, high-vibration environment and must produce a very precise signal. Lower-cost sensors may use materials and internal electronics that are less robust than OEM-quality parts, leading to a shorter service life. For critical sensors, investing in a reputable brand is often more cost-effective in the long run.
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Technical Specifications
OEM Part Numbers: 12674702 (2.5L LCV) 12684186 (3.6L LFX, 2015-2016) 12646782 (3.6L LGZ, 2017-2022+) 55593759 (2.8L Duramax LWN)
The crankshaft position sensor is a magnetic hall-effect sensor that generates a voltage signal as the toothed reluctor wheel on the crankshaft rotates past it. It typically has a 3-pin connector for power, ground, and signal wires.
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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.
- GMC Canyon: