2009 Chevrolet Impala Lt Specs – The Complete Performance
The 2009 Chevrolet Impala LT remains a popular choice for those seeking a balance of full-size comfort and proven V6 power. This guide breaks down the essential 2009 chevrolet impala lt specs, maintenance requirements, and common DIY fixes to keep your sedan running like new.
Finding a reliable daily driver often involves looking at the ninth-generation Impala, a car known for its massive trunk and smooth ride. Whether you are a first-time owner or a seasoned DIYer, understanding the mechanical DNA of this vehicle is the first step toward successful ownership. In this article, we will explore the 2009 chevrolet impala lt specs and provide technical insights to help you maintain and upgrade your ride effectively.
The LT trim was the heart of the Impala lineup in 2009, offering more features than the base LS without the high fuel costs of the SS V8. We will cover everything from engine output to the specific tools you need for a weekend brake job. Let’s dive into the details that make this Chevy a staple on American roads.
Engine and Powertrain: Analyzing the 2009 chevrolet impala lt specs
The 2009 Impala LT primarily featured two engine options that defined its performance profile. Most models came equipped with the 3.5-liter V6, while some 2LT packages offered the more robust 3.9-liter V6 engine.
The 3.5L V6 Engine (LZE)
The standard 3.5L V6 delivered 211 horsepower and 216 lb-ft of torque. This engine utilizes a cam-in-block design and overhead valves (OHV), which many mechanics appreciate for its simplicity and ease of repair. It also features Variable Valve Timing (VVT) to improve efficiency across the power band.
The 3.9L V6 Engine (LGD)
If your LT has the 3.9L upgrade, you are looking at 233 horsepower and 240 lb-ft of torque. This engine provides a noticeable boost in highway passing power. It also includes Active Fuel Management (AFM) on certain models, which shuts down cylinders to save gasoline during steady cruising.
Transmission and Drivetrain
Both engines are paired with the Hydra-Matic 4T65-E four-speed automatic transmission. While some competitors were moving to six-speed units, this four-speed is known for its durability and straightforward servicing. It sends power exclusively to the front wheels, providing stable traction in most weather conditions.
Fuel Efficiency and Performance Benchmarks
When reviewing the 2009 chevrolet impala lt specs, fuel economy is often a top priority for daily commuters. For a full-size sedan, the Impala holds its own, especially when utilizing its Flex-Fuel capabilities.
EPA Fuel Economy Ratings
The 3.5L engine typically earns an EPA-estimated 19 MPG in the city and 29 MPG on the highway. Choosing the 3.9L engine drops those numbers slightly to 17 MPG city and 27 MPG highway. These figures are respectable for a car that weighs nearly 3,600 pounds.
Flex-Fuel Capability (E85)
A key feature of the 2009 LT is its ability to run on E85 ethanol. While E85 is often cheaper per gallon, keep in mind that your fuel economy will drop by about 25-30%. Always check for the yellow fuel cap or the “Flex-Fuel” badge before filling up with ethanol blends.
Acceleration and Handling
The Impala LT is not a sports car, but it offers a composed ride. The 0-60 MPH sprint takes roughly 7.5 to 8 seconds depending on the engine. The suspension uses MacPherson struts at all four corners, prioritizing comfort over aggressive cornering.
Interior Comfort and Cargo Capacity
The interior of the 2009 Impala LT is designed for long-distance cruising and family hauling. It offers one of the most spacious cabins in its class, often rivaling luxury cars in pure volume.
Passenger Dimensions
Front-seat passengers enjoy 39.4 inches of headroom and 42.3 inches of legroom. The rear seat is equally generous, providing 37.6 inches of legroom, which is plenty for adult passengers. Some LT models even featured a 40/20/40 front bench seat, allowing for six-passenger capacity.
Trunk Space and Storage
The trunk is a standout feature, offering 18.6 cubic feet of space. The opening is wide and the floor is low, making it easy to load heavy gear or groceries. You can also fold down the rear seats to accommodate longer items like camping equipment or DIY materials.
Available Technology
Standard LT features include dual-zone manual climate control, a leather-wrapped steering wheel, and an auxiliary input for your phone. High-end LT packages might include the Bose premium sound system and Bluetooth connectivity for hands-free calling. These features were cutting-edge for the 2009 model year.
Safety Features and Braking Systems
Safety is a critical component of the 2009 chevrolet impala lt specs. Chevrolet equipped this model with several active and passive safety systems to protect occupants during a collision.
Airbag System and Crash Ratings
The 2009 Impala comes standard with front-impact airbags, side-impact airbags, and overhead curtain airbags. In government crash testing, it received high marks for front-impact protection. This makes it a trustworthy choice for families or teen drivers.
Braking and Stability Control
Four-wheel disc brakes with an Anti-lock Braking System (ABS) are standard on the LT. It also features StabiliTrak electronic stability control and traction control. These systems work together to prevent skidding on slippery surfaces like ice or wet pavement.
Chassis and Frame
The Impala is built on the GM W-body platform. This chassis is known for its rigidity and ability to absorb road vibrations. It uses a high-strength steel safety cage to maintain the cabin’s integrity during an accident.
Common Maintenance Tasks for the 2009 Impala LT
Keeping your Impala in top shape requires regular attention. Because the 3.5L and 3.9L engines are so common, parts are affordable and widely available at any local auto parts store.
- Oil Changes: Change the oil every 5,000 to 7,500 miles. Use a high-quality 5W-30 synthetic blend to protect the internal components.
- Coolant Flushes: The Dex-Cool coolant should be flushed every 5 years or 100,000 miles. Neglecting this can lead to clogged heater cores or intake manifold gasket leaks.
- Brake Service: Inspect the brake pads and rotors every 12,000 miles. If you feel a vibration in the steering wheel while braking, your front rotors may be warped.
- Transmission Fluid: Use Dexron VI fluid for the 4T65-E transmission. A simple pan drop and filter change every 60,000 miles can significantly extend the life of the unit.
When performing these tasks, always use a torque wrench to ensure bolts are tightened to factory specifications. Safety stands and a high-quality floor jack are essential for any under-car work. Never rely on the emergency jack provided with the spare tire for maintenance.
Known Issues and DIY Troubleshooting
Every vehicle has its quirks, and the 2009 Impala is no exception. Knowing these common pitfalls can save you hours of frustration and hundreds of dollars in shop labor.
The “Clicking” Dash (Actuator Failure)
A very common issue is a clicking sound coming from behind the dashboard when you change the temperature. This is usually a failed blend door actuator. Replacing it is a tedious but manageable DIY task that requires removing the glove box or under-dash panels.
Power Steering Leaks
The high-pressure power steering hose on these models is prone to leaking over time. Check your fluid levels regularly. If you see red fluid on your driveway, inspect the hose connections near the pump. Replacing the hose requires a line wrench and some patience.
Wheel Hub Assemblies
If you hear a low humming or growling noise that changes with vehicle speed, a wheel bearing is likely failing. On the Impala, the bearing is part of a sealed hub assembly. You must replace the entire unit, which also includes the ABS speed sensor.
Frequently Asked Questions About 2009 chevrolet impala lt specs
What is the towing capacity of the 2009 Impala LT?
The 2009 Impala LT is rated to tow up to 1,000 pounds when properly equipped. However, it is not recommended for frequent towing, as the 4-speed transmission can overheat under heavy loads. Always use a transmission cooler if you plan to pull a small utility trailer.
Does the 2009 Impala LT have a timing belt or chain?
Both the 3.5L and 3.9L V6 engines use a timing chain. Unlike timing belts, these chains are designed to last the life of the engine. Regular oil changes are the best way to ensure the tensioners and chain remain in good condition.
What size tires does the LT trim use?
The standard tire size for the 2009 Impala LT is P225/60R16. If your car has the 17-inch alloy wheel upgrade, the size changes to P225/55R17. Always maintain the recommended tire pressure listed on the driver’s side door jamb for the best fuel economy.
Can I upgrade the headlights to LED?
Yes, you can install LED bulbs, but you must ensure they are compatible with the factory housing to avoid blinding other drivers. Many owners prefer upgrading to a high-quality halogen bulb for a cleaner white light without the wiring complexity of some LED kits.
Final Thoughts for the DIY Mechanic
The 2009 Chevrolet Impala LT is a testament to functional American engineering. By understanding the 2009 chevrolet impala lt specs, you can make informed decisions about repairs and upgrades. This car rewards those who follow a strict maintenance schedule with years of reliable service.
Whether you are flushing the coolant or replacing a worn-out hub assembly, take your time and follow safety protocols. Use the right tools, consult a service manual when in doubt, and don’t be afraid to get your hands dirty. These cars are built to be worked on, making them a perfect platform for the weekend mechanic.
Keep your fluids clean, your tires rotated, and your sensors checked. With a little bit of effort, your Impala will continue to provide a smooth, comfortable ride for many miles to come. Stay safe and enjoy the drive!
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