2012 Chevrolet Impala Specifications – A Complete Mechanic’s Guide

The 2012 Chevrolet Impala represents a pivotal year for the nameplate, introducing the powerful 3.6L LFX V6 engine and a six-speed automatic transmission as standard across all trims. This guide provides a deep dive into the technical data, fluid capacities, and dimensions necessary for owners and DIY mechanics to maintain this reliable full-size sedan.

You probably know that the 2012 model year was a “sleeper” year for the Impala. While it looked like the previous years on the outside, Chevrolet completely overhauled the powertrain to give it more punch and better efficiency. If you are looking to buy one or keep your current ride running like new, understanding the 2012 chevrolet impala specifications is the first step toward successful ownership.

In this guide, we will break down everything from engine output to the specific bolt patterns for your wheels. We promise to provide the clarity you need to tackle your next weekend project or evaluate a potential purchase. Let’s look under the hood and see what makes this tenth-generation W-body tick.

The Heart of the Beast: 3.6L LFX V6 Engine

For the 2012 model year, Chevy ditched the older 3.5L and 3.9L engines in favor of the High Feature 3.6L V6. This engine, known by its RPO code LFX, features dual overhead cams (DOHC) and direct injection technology. It was a massive leap forward in terms of power-to-weight ratio for the sedan.

Horsepower and Torque Output

The LFX engine produces a healthy 300 horsepower at 6,500 RPM. This is a significant jump from previous years, making the Impala surprisingly quick for its size. The torque is equally impressive, peaking at 262 lb-ft at 5,300 RPM, which helps with highway passing and merging.

Because this engine uses direct injection, the fuel is sprayed directly into the combustion chamber at high pressure. This results in a more complete burn and better throttle response. However, DIYers should note that direct injection engines can be prone to carbon buildup on the intake valves over long periods.

Transmission and Drivetrain Details

Paired with the V6 is the Hydra-Matic 6T70 six-speed automatic transmission. This electronically controlled unit offers a wide gear ratio spread to balance off-the-line acceleration with fuel-efficient cruising. It is a front-wheel-drive (FWD) setup, which provides good traction in rain and light snow.

The 6T70 is generally robust, but it benefits greatly from regular fluid refreshes. If you are towing a small trailer or driving in hilly terrain, keep an eye on the transmission temperature. The shift logic is designed for smoothness, but it can be tuned for firmer shifts if you are looking for a sportier feel.

2012 chevrolet impala specifications for Dimensions and Weight

The 2012 Impala is a true full-size sedan, offering a massive footprint that translates to a stable ride on the open road. Knowing the exact measurements is crucial if you are planning to fit it into a tight garage or if you are looking at aftermarket suspension components.

Exterior Measurements

The overall length of the vehicle is 200.4 inches, sitting on a 110.5-inch wheelbase. It has a total width of 72.9 inches and a height of 58.7 inches. These 2012 chevrolet impala specifications confirm its status as one of the larger sedans in its class during that era.

The curb weight varies slightly depending on the trim level (LS, LT, or LTZ). On average, the car weighs approximately 3,555 pounds. For DIYers, this weight is important to know when selecting a floor jack or jack stands. Always ensure your equipment is rated for at least two tons to maintain safety while working underneath.

Chassis and Suspension Setup

The Impala uses a four-wheel independent suspension system. The front consists of MacPherson struts with a stabilizer bar, while the rear utilizes a multi-link setup with coil springs. This configuration is tuned for comfort rather than carving corners, though the LTZ trim features a slightly stiffer “FE3” sport suspension.

If you notice a “clunking” sound over bumps, check the stabilizer bar links. These are common wear items on the W-body platform. Replacing them is a straightforward job for a weekend mechanic with a basic set of wrenches and a socket set.

Interior Capacity and Cargo Volume

One of the primary reasons people choose the Impala is the sheer amount of room inside. It is one of the few modern sedans that was still available with a front bench seat, allowing for six-passenger seating in specific configurations.

Passenger Space

Front-seat passengers enjoy 39.4 inches of headroom and 42.3 inches of legroom. In the back, passengers get 37.8 inches of headroom and 37.6 inches of legroom. The 2012 chevrolet impala specifications for shoulder room are also generous, measuring 58.7 inches in the front and 58.6 inches in the rear.

This space makes it an excellent choice for long road trips or for those who frequently carry adult passengers. The seats are designed for long-distance comfort, though the side bolstering is minimal. If you are a DIYer looking to upgrade the interior, many owners swap in leather seats from the LTZ trim into the LS or LT models.

Trunk and Storage

The trunk is cavernous, offering 18.6 cubic feet of cargo space. The opening is wide, making it easy to load large suitcases or camping gear. If you need even more room, the rear seats feature a flip-and-fold function. The seat cushions flip forward, and the backs fold down to create a flat loading floor.

Under the trunk carpet, you will find the spare tire well. Most 2012 models came with a compact “donut” spare, but there is enough room in the well to fit a full-size spare if you prefer the peace of mind during long-distance travel. Just be sure to secure it properly to prevent rattling.

Detailed 2012 chevrolet impala specifications for Every Trim Level

Chevrolet offered the 2012 Impala in three primary trim levels: LS, LT, and LTZ. While they all share the same engine and transmission, their standard equipment and wheel sizes differ. Referencing the 2012 chevrolet impala specifications for your specific trim ensures you buy the right replacement parts.

• LS Trim: The base model comes with 16-inch steel wheels and 225/60R16 tires. It features cloth seating and basic power amenities.
• LT Trim: The mid-level trim upgrades to 17-inch alloy wheels with 225/55R17 tires. It often includes a remote starter and dual-zone climate control.
• LTZ Trim: The top-tier trim boasts 18-inch alloy wheels with 235/50R18 tires. It features the FE3 performance-tuned suspension, leather upholstery, and a Bose premium audio system.

If you are looking to upgrade your wheels, the bolt pattern for all 2012 Impala models is 5x115mm. The center bore is 70.3mm. Do not confuse this with the more common 5×114.3mm pattern found on many imports, as the slight difference can cause vibration and lug nut failure.

Fuel Economy and Performance Metrics

Despite having 300 horsepower, the 2012 Impala is surprisingly efficient for a large sedan. This is largely due to the six-speed transmission, which allows the engine to hum at low RPMs during highway cruising. Checking the 2012 chevrolet impala specifications for fuel consumption helps you plan your budget.

EPA Fuel Economy Ratings

The EPA rates the 2012 Impala at 18 MPG in the city and 30 MPG on the highway. This gives it a combined rating of 22 MPG. These numbers were very competitive for the time, especially when compared to rivals with smaller or less powerful engines.

The fuel tank capacity is 17.0 gallons. Using the highway rating of 30 MPG, you can theoretically achieve a cruising range of over 500 miles on a single tank. For the best efficiency, ensure your tires are inflated to the recommended 30 PSI (cold) and keep your air filter clean.

Acceleration and Braking

The 2012 Impala can sprint from 0 to 60 MPH in approximately 6.6 seconds. This is quite brisk for a front-wheel-drive family sedan. The quarter-mile time sits around 15.0 seconds at 95 MPH. These performance figures make it more than capable of handling modern traffic conditions.

Stopping power is provided by four-wheel disc brakes with a standard Anti-lock Braking System (ABS). The front rotors are 11.7 inches, and the rear rotors are 10.2 inches. When performing a brake job, always use a high-quality ceramic brake pad to minimize dust and noise while maintaining consistent stopping distances.

Maintenance and Fluid Capacities for DIY Mechanics

For the DIY mechanic, the Impala is a relatively easy car to work on. The engine bay is spacious, and most routine maintenance items are easily accessible. Following the 2012 chevrolet impala specifications for fluids is the best way to ensure longevity.

Engine Oil and Filtration

The 3.6L V6 requires 6.0 quarts (5.7 liters) of oil with a filter change. Chevrolet specifies the use of dexos1 certified 5W-30 synthetic blend or full synthetic oil. Using the correct oil is vital for the health of the Variable Valve Timing (VVT) solenoids.

1. Locate the oil drain plug (15mm bolt) on the bottom of the oil pan.
2. The oil filter is a cartridge style or a spin-on depending on the exact build date, though most 2012s use the PF63 spin-on filter.
3. Tighten the drain plug to 18 lb-ft of torque to avoid stripping the threads.
4. Reset the Oil Life Monitor through the Driver Information Center (DIC) buttons on the dashboard.

Cooling and Transmission Fluids

The cooling system has a capacity of approximately 11.4 quarts. It requires Dex-Cool (orange) coolant mixed 50/50 with distilled water. Never mix Dex-Cool with traditional green coolant, as it can lead to “sludging” and clog your heater core.

The 6T70 transmission does not have a traditional dipstick for checking levels. Instead, it has a level-set plug on the side of the case. A standard “drain and fill” usually requires about 4 to 6 quarts of DEXRON-VI automatic transmission fluid. Because this fluid is synthetic, it handles heat much better than older formulations.

Common Issues and Troubleshooting

Every vehicle has its quirks, and the 2012 Impala is no exception. Being aware of these common problems can save you hours of frustration. Many of these issues are well-documented within the enthusiast community.

The “Clicking” Dash: Blend Door Actuators

If you hear a persistent clicking sound coming from behind the dashboard when you turn on the AC or change the temperature, it is likely a failed blend door actuator. These small plastic motors strip their gears over time. There are three or four actuators depending on your climate control options, and they are a common DIY fix.

Evap System: P0442 and P0455 Codes

The Impala often triggers Check Engine Lights related to the evaporative emissions system. Often, the culprit is a loose gas cap or a failed vent valve solenoid located near the fuel tank. These parts are inexpensive and can be replaced with basic hand tools to help you pass emissions testing.

Power Steering Pump Noise

Some owners report a whining noise from the power steering pump, especially in cold weather. First, check the fluid level. If it is low, top it off with DEXRON-VI (yes, the same as the transmission fluid). If the noise persists, the pump or the high-pressure line may need replacement.

Frequently Asked Questions About 2012 chevrolet impala specifications

What is the bolt pattern for a 2012 Chevy Impala?

The bolt pattern is 5x115mm. It is important to use the exact size, as 5×114.3mm wheels may fit onto the studs but will cause safety issues and vibrations.

Does the 2012 Impala have a timing belt or chain?

The 3.6L LFX engine uses three timing chains. These are designed to last the life of the engine, provided you perform regular oil changes with the correct dexos1 certified oil.

What is the towing capacity of the 2012 Impala?

When properly equipped, the 2012 Impala has a maximum towing capacity of 1,000 pounds. This is suitable for a small utility trailer or a bike rack, but not for heavy loads.

How much oil does the 2012 Impala take?

The 3.6L V6 engine requires 6.0 quarts of 5W-30 oil. Always check the dipstick after filling to ensure the level is within the hatched operating range.

Final Thoughts on the 2012 Impala

The 2012 Chevrolet Impala is a robust, powerful, and spacious sedan that offers great value for DIY mechanics and daily drivers alike. By sticking to the 2012 chevrolet impala specifications outlined in this guide, you can ensure your vehicle remains safe and reliable for years to come.

Whether you are performing a simple oil change or diving into a suspension overhaul, remember to always prioritize safety. Use the right tools, consult your owner’s manual for specific torque values, and don’t be afraid to get your hands dirty. This car was built to be driven, and with a little sweat equity, it will serve you well on every journey. Stay safe, keep wrenching, and enjoy the ride!