A Guide to the Engine VVT Solenoid for the 2006-2013 Chevrolet Impala
Diagnose and fix poor performance in your Impala by understanding this critical engine part.
- The most common cause of VVT solenoid failure is dirty engine oil; always perform oil changes on time.
- Symptoms include a check engine light (codes P0010, P0011, P0013, P0014), rough idle, and poor acceleration.
- Replacement is an easy DIY job for most owners, requiring only basic tools and about 30 minutes.
- For best results, use a high-quality replacement part from a reputable brand like ACDelco or Standard Ignition.
Is Your Impala Running Rough? It Could Be the VVT Solenoid.
If your 2006-2013 Chevrolet Impala is experiencing a sudden drop in fuel mileage, a rough idle, or feels sluggish when you accelerate, a failing Variable Valve Timing (VVT) solenoid could be the culprit. This component is critical for modern engine performance, but it's also a common failure point, often due to simple maintenance issues.
Symptoms of VVT Solenoid Failure
A bad VVT solenoid will usually let you know something is wrong. The most obvious sign is a Check Engine Light. Other common symptoms include:
- Rough, Shaky Idle: The engine may vibrate or run unevenly when you're stopped.
- Stalling: In more serious cases, the engine might stall completely at low speeds.
- Poor Acceleration: The car may feel weak or hesitate when you press the gas pedal.
- Worse Gas Mileage: You may find yourself filling up the tank more often than usual.
- Engine Noises: A distinct rattling or ticking sound may come from the top of the engine.
The #1 Cause of Failure: Dirty Oil
The most common reason VVT solenoids fail is due to dirty or low engine oil. The solenoids have very small passages and filter screens that can become clogged with sludge. Sticking to a regular oil change schedule with the manufacturer-recommended oil is the best way to prevent this problem.
Choosing the Right Aftermarket VVT Solenoid
When shopping for a replacement, you'll find several brands. While they may look similar, quality can vary. Here’s a breakdown of your options:
- Premium / OEM-Equivalent (ACDelco): ACDelco is the original equipment manufacturer for GM. Choosing this brand ensures a perfect fit and the most reliable performance, though it is often the most expensive option. For a critical electronic part, many mechanics recommend sticking with the OEM supplier to avoid issues.
- Mid-Grade Aftermarket (Dorman, Standard Ignition, Gates): Brands like Dorman and Standard (SMP) are well-known in the aftermarket and offer a balance of quality and price. They are a reliable choice for many repairs. However, some professional mechanics express caution with aftermarket electronic parts, as they can sometimes have a shorter lifespan than OEM.
- Budget-Friendly (Store Brands, various online sellers): While the low price is tempting, very cheap solenoids from unknown brands can be a gamble. They might fail prematurely or not perform to OEM specifications, causing the check engine light and performance issues to return.
How Many Solenoids Does My Impala Have?
The number of VVT solenoids depends on your Impala's engine:
- 3.5L & 3.9L V6 Engines: These engines typically use a single, externally mounted VVT actuator assembly (often called an "actuator magnet").
- 3.6L V6 Engine: This engine has four VVT solenoids—an intake and an exhaust solenoid for each of the two cylinder banks (Bank 1 and Bank 2).
Pro Tip for 3.5L/3.9L Engines
GM issued a service bulletin for engines using the VVT actuator magnet. When replacing it, you should check the spool valve inside the engine that the actuator controls. Gently press on the valve to ensure it moves in and springs back out. If it's stuck, it must be freed up before installing the new part.
🎬 See how to check the VVT magnet on 3.5L engines| Item | Estimated Cost |
|---|---|
| New Aftermarket Part | $33.95 - $109.69 |
| New OEM Part (ACDelco) | $123 - $149 |
| Shop Labor | $78 - $115 |
| Total Estimated Cost (Shop Repair) | $202 - $264 |
Frequently Asked Questions
Can I just clean my old VVT solenoid?
You can try cleaning the solenoid with brake cleaner to remove sludge from the screens, and some people have temporary success with this method. However, if the solenoid's internal electronic components are failing, cleaning won't help. Given the reasonable cost of a new part and the easy replacement, replacing it is the recommended permanent fix.
Is this a difficult DIY job?
No, for most people this is an easy DIY repair. The solenoids are usually located on the top of the engine and held in by a single 10mm bolt. The entire job can often be done in under 30 minutes per solenoid with basic hand tools.
🎬 Watch this step-by-step guide to replacing your Impala's solenoidsShould I replace all the solenoids at once on my 3.6L engine?
It is not strictly necessary, but it is often recommended. The solenoids are all the same age and have operated under the same conditions. If one has failed due to sludge or age, the others may not be far behind. Replacing them all at once can save you from having to do the same job again in the near future.
Are there any recalls for this part?
No, as of early 2026, there are no active NHTSA safety recalls for the Engine VVT Solenoid on the 2006-2013 Chevrolet Impala.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12655420 12628347 12646783 12578518 917-298
The 2006-2013 Impala uses different VVT solenoids depending on the engine. The 3.5L/3.9L V6 engines use a single actuator magnet assembly. The 3.6L V6 engine uses four individual solenoids (two intake, two exhaust). Always verify the correct part for your specific engine before ordering.
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.
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