Engine Camshaft Position Sensor Guide for 2009-2014 Chevrolet Express 1500
Fix stalling, hard starts, and poor performance in your Chevy Express van by understanding and choosing the right camshaft position sensor.
- A failing camshaft sensor on an Express 1500 most often causes a Check Engine Light with codes P0340 or P0341, hard starting, and stalling.
- For critical sensors, choosing a premium brand like Delphi, NGK, or Standard Ignition is highly recommended for long-term reliability.
- Replacement is a simple DIY task for most owners, typically requiring only a 10mm socket and less than 30 minutes.
- Always inspect the wiring harness and connector for damage or oil contamination, as this can cause the same symptoms as a bad sensor.
Symptoms of a Failing Camshaft Position Sensor
When the camshaft position sensor on your Express 1500 starts to fail, it can cause a range of noticeable problems. The signals it sends to the engine computer can become weak, intermittent, or stop completely. Because the computer loses track of the camshaft's position, you may experience one or more of the following issues.
Common Ordering Mistakes
The 2009-2014 Express 1500 was available with different engines (4.3L V6, 4.8L V8, 5.3L V8). While the function is the same, the exact part number can vary. Always verify the part fits your specific engine before ordering. The sensor for Gen 4 V8 engines is typically located in the front timing cover. Be aware that some online listings may incorrectly show sensors for older Gen 3 engines, which were located at the back of the engine block.
Choosing the Right Aftermarket Sensor
When replacing a critical sensor, quality matters. While a lower price can be tempting, a cheap sensor that fails early will cost you more time and money in the long run. Many experienced mechanics and owners recommend using OEM or OEM-equivalent brands for sensors to avoid repeat failures. Here’s a breakdown of the available brands, grouped into tiers based on reputation and quality.
Tier 1: OEM & Premium Aftermarket
These brands are either the original equipment manufacturer (OEM) or are known for producing parts that meet or exceed OEM standards. They are the most reliable choice.
- Delphi: As a former part of General Motors, Delphi is a top choice. Their sensors are often identical to the original factory part, ensuring proper performance and durability.
- Hitachi: A well-respected Japanese manufacturer known for high-quality electronic components and sensors.
- NGK / NTK: While famous for spark plugs, their NTK sensor line is highly regarded for its quality and reliability.
- Standard Ignition (SMP): A long-standing brand in the aftermarket with a reputation for producing dependable, professional-grade parts.
Tier 2: Standard Aftermarket
These brands offer a good balance of price and quality. They are a solid choice for many repairs.
- Dorman: Dorman is known for providing cost-effective solutions and often makes design improvements over the original part. However, quality can sometimes be inconsistent, so check reviews for your specific part number.
- Walker Products: With a long history in engine management parts, Walker is a dependable choice, especially for modern engines.
- Holstein: A brand that offers a wide range of sensors that are designed to be direct-fit replacements.
Tier 3: Value Brands
These brands focus on providing the lowest possible price. They may be suitable for a budget repair, but long-term reliability can be a concern.
- Global Parts
- Prenco
- True Tech
Cost to Replace Engine Camshaft Position Sensor
| Part Type | Price Range |
|---|---|
| New Aftermarket | $27.24 - $56.57 |
| Shop Labor | $50 - $100 |
| Total Estimated Cost | $77 - $157 |
Prices are estimates and can vary based on location, brand, and vehicle specifics.
Frequently Asked Questions
Where is the camshaft position sensor located on the 2009-2014 Express 1500?
For the V8 engines (4.8L, 5.3L) in this generation, the camshaft position sensor is typically located on the front of the engine, mounted in the timing chain cover. It is held in by a single 10mm bolt. On some GM V8s, the sensor is at the rear of the engine near the oil pressure sensor, but this is less common for this year range. The 4.3L V6 may have it in a different location, often near the distributor area.
Can I replace this sensor myself?
Yes, this is a relatively easy DIY job for most people. The sensor is usually accessible at the front of the engine. The process involves disconnecting the battery, unplugging the electrical connector, removing one bolt, and carefully pulling the old sensor out. Installation is the reverse of removal. The estimated time is under 30 minutes.
What happens if I don't replace a bad sensor?
Ignoring a failing camshaft position sensor can lead to more serious problems. Your van may become difficult to start, or it may not start at all. It can also stall unexpectedly while driving, which is a serious safety risk. Continuing to drive with a bad sensor can also lead to poor fuel economy and potential damage to other engine components over time.
Do I need to perform a 'relearn' procedure after replacement?
For most 2009-2014 Express vans, a specific relearn procedure with a scan tool is not required for the camshaft position sensor. However, some sources suggest that after replacement, driving the vehicle at a steady speed (e.g., 55 mph) can help the computer adapt to the new sensor. It is always a good practice to clear any stored trouble codes with an OBD-II scanner after the repair is complete.
Technical Specifications
OEM Part Numbers: 12591720 12680683 12703627
The sensor for the V8 engines is typically a 3-pin Hall effect sensor located in the front timing cover, held by one 10mm bolt.
We Have This Part in Stock
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.
- Chevrolet Express 1500: