Guide to the Engine Camshaft Position Sensor for the 2015-2022 Chevrolet Colorado
Having starting trouble or a check engine light on your 2015-2022 Colorado? Your camshaft position sensor could be the problem.
- A failing camshaft position sensor will typically cause a Check Engine Light with codes P0340 or P0341, hard starting, and a rough idle.
- For reliability, choose an OEM (ACDelco) or a premium aftermarket brand like Delphi, NTK, or Standard Motor Products.
- The 3.6L V6 has four sensors; if one fails at high mileage, consider replacing them in pairs to prevent future issues.
- This is a manageable DIY repair for most owners, typically requiring only basic hand tools and saving on labor costs.
Is Your Truck Running Rough? It Could Be a Cam Sensor.
If your Chevrolet Colorado isn't running right, a bad camshaft position sensor is a common suspect. This sensor tells your truck's computer how to time the engine. When it fails, the computer has to guess, which can cause a lot of problems. Ignoring the symptoms can lead to poor fuel mileage, a rough-running engine, and even leave you stranded if the truck won't start.
Symptoms of a Failing Camshaft Position Sensor
A bad cam sensor will usually let you know something is wrong. Here are the most common signs:
- Check Engine Light: This is often the first warning. A code reader will typically show codes like P0340 or P0341. 🎬 Watch how replacing the sensor fixed these specific starting codes.
- Trouble Starting: The engine may crank longer than usual before it starts, or it might not start at all.
- Rough Idle: Your truck may shake or vibrate when it's stopped and idling.
- Poor Acceleration: You might notice the truck feels sluggish or lacks power when you press the gas pedal.
- Stalling: The engine may suddenly shut off while you are driving or idling.
- Worse Gas Mileage: When the engine timing is off, it burns more fuel than it should.
Known Issue: Camshaft Actuator Solenoid vs. Sensor
GM issued a Special Coverage (N232430470) for some 2020 Chevrolet Colorado models for a failing camshaft position actuator valve solenoid, not the sensor itself. This is a different part that can cause similar symptoms, like a check engine light. If you have a 2020 model, it's worth having a dealer check if this special coverage applies to your truck before you replace the sensor.
🎬 See this walkthrough for replacing the camshaft actuator solenoid.Choosing the Right Aftermarket Sensor
You don't have to buy the most expensive part, but you should choose a quality brand for an important sensor like this. Cheap, low-quality sensors are known to fail quickly. Here’s a breakdown of your options:
Tier 1: OEM & Premium Aftermarket
- ACDelco (GM Genuine): This is the original part that came with your truck. It is the benchmark for fit and performance. Using the GM Genuine part guarantees compatibility.
- Delphi: Delphi was a long-time GM parts supplier and is widely considered to be OEM-quality. Many professional mechanics trust Delphi for electronic parts.
- Hitachi / NTK: Both are well-respected Japanese manufacturers that often supply original parts to many car brands. They are known for high-quality electronics.
Tier 2: Quality Standard Aftermarket
- Standard Motor Products (SMP): A very popular aftermarket brand that offers a good balance of price and quality. They perform extensive testing on their parts.
- Dorman: Dorman is a huge name in aftermarket parts and offers a wide range of products. Their quality is generally reliable for a sensor like this.
- Walker Products / Holstein: These brands offer a cost-effective alternative to premium brands and claim to meet or exceed OE specifications.
Pro Tip: Your 3.6L V6 engine has four camshaft position sensors (two intake, two exhaust). The 2.5L I4 and 2.8L Diesel have a different number and location. If one sensor fails, it's not a bad idea to consider replacing them in pairs (e.g., both intake or both exhaust) or all at once, especially on higher-mileage trucks, as the others may not be far behind.
Cost to Replace a Camshaft Position Sensor
| Part Type | Price Range | Notes |
|---|---|---|
| New Aftermarket | $18 - $83 | Price depends on the brand. Premium brands like Delphi are higher. |
| New OEM (ACDelco) | $40 - $76 | This is for the genuine GM part. |
| Shop Labor | $68 - $150 | Depends on which sensor is being replaced. Some are harder to reach. |
| Total Estimated Cost | $86 - $233 | DIY can save you significant labor costs. |
Frequently Asked Questions (FAQ)
How many camshaft position sensors does my Colorado have?
If you have the 3.6L V6 engine, your truck has four sensors. They are for the intake and exhaust camshafts on each side of the engine (Bank 1 and Bank 2). 🎬 Watch: See exactly where all four sensors are located. The 2.5L 4-cylinder and 2.8L Duramax diesel engines have a different configuration, typically with two sensors.
Can I replace a camshaft position sensor myself?
Yes, this is a DIY-friendly job for many owners. The sensors are usually held in by a single 10mm bolt. On the 3.6L V6, the sensors are at the back of the engine. Accessing them may require removing the engine cover and potentially working in a tight space, but it does not require highly specialized tools.
Should I buy an OEM sensor or is aftermarket okay?
For critical electronic sensors, it's best to stick with high-quality brands. An ACDelco GM Genuine or a premium aftermarket brand like Delphi or NTK is highly recommended for reliability. While cheaper options exist, they have a higher risk of failing prematurely, which means you'll be doing the job again.
Do I need to do anything after replacing the sensor?
After installing the new sensor, you should use an OBD2 scanner to clear the diagnostic trouble codes from the computer. Some sources recommend disconnecting the battery for about 15 minutes to reset the system, but clearing the codes with a scanner is the preferred method.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12638266 12646782 12637869 55593759
The 2015-2022 Chevrolet Colorado uses different sensors depending on the engine (2.5L I4, 3.6L V6, 2.8L Diesel) and the specific camshaft (intake or exhaust). The 3.6L V6 uses four sensors in total. Always verify the part number with your vehicle's VIN for an exact match.
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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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