🏷️ Basic Information

Make:

Chevrolet

Model:

Impala

Year:

2011

Platform:

W-body

Vin Code:

1G4

👋 Introduction

Segment:

Full-size sedan

Target Audience:

Families, fleet buyers, individuals seeking comfortable and spacious transportation

Key Competitors:

Ford Taurus, Toyota Avalon, Chrysler 300, Dodge Charger

Distinguishing Features 2011:

Refreshed exterior styling, updated interior, improved powertrain options, enhanced safety features

Value Proposition:

Spacious interior, comfortable ride, affordable pricing for its class, strong reputation for durability

📋 Manual Details

Primary Focus:

Service and Repair

Regions Covered:

North America (USA, Canada, Mexico)

Estimated Pages:

2000+

Type:

Workshop Service Repair Manual

Language:

English

Format:

Downloadable PDF

📖 Manual Coverage

Engine Mechanical:

Complete engine overhaul, cylinder head, block, pistons, crankshaft, camshaft, timing components, lubrication system

Engine Management:

Fuel injection, ignition system, emissions control, sensors, ECM diagnostics and programming

Transmission:

Automatic transmission (4-speed 4T65-E, 6-speed 6T70/6T75) overhaul, diagnostics, fluid service, shift control

Drivetrain:

Front-wheel drive axle shafts, differential, driveshafts, wheel bearings

Brakes:

Front and rear brake systems (disc brakes), ABS, EBD, hydraulic components, bleeding procedures

Suspension:

Front and rear suspension components, struts, shocks, springs, control arms, ball joints, bushings, steering linkage

Steering:

Power steering system, steering column, rack and pinion assembly, tie rods

Electrical System:

Battery, charging system, starting system, lighting, instrumentation, power windows, locks, mirrors, wipers, horns

HVAC:

Heating, Ventilation, and Air Conditioning (HVAC) system components, refrigerant system, climate control modules

Body And Frame:

Body panels, doors, hood, trunk, glass, interior trim, structural components, corrosion protection

Comfort And Convenience:

Seating systems, sunroof, remote keyless entry, security system

Restraint Systems:

Airbags, seat belts, SRS system diagnostics and component replacement

Maintenance:

Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, tire rotation, spark plug replacement

Diagnostics:

Troubleshooting guides, diagnostic trouble codes (DTCs), component testing procedures, wiring diagrams, flowcharts

Repair:

Engine repair, transmission overhaul, brake caliper replacement, suspension component replacement, electrical component repair, body panel repair

Assembly Disassembly:

Step-by-step instructions for removing and installing major components and sub-assemblies

Specifications:

Torque specifications, clearances, fluid capacities, electrical resistance values, pressures

Depth:

Comprehensive (from basic fluid changes to complete engine and transmission rebuilds)

Detail Level:

Detailed diagrams, exploded views, step-by-step instructions, wiring schematics

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text content

Print Readability:

High resolution, suitable for printing individual pages or sections

Digital Binding:

N/A (Digital Download)

Digital Medium:

N/A (Digital Download)

⚙️ Engine Specifications

Engine 1 Displacement:

3.5L (3500cc)

Engine 1 Configuration:

V6 (24-valve, SOHC)

Engine 1 Engine Code:

LZ4

Engine 1 Horsepower:

252 hp @ 6100 rpm

Engine 1 Torque:

251 lb-ft @ 3200 rpm

Engine 2 Displacement:

3.9L (3878cc)

Engine 2 Configuration:

V6 (24-valve, SOHC)

Engine 2 Engine Code:

L37

Engine 2 Horsepower:

224 hp @ 5700 rpm

Engine 2 Torque:

235 lb-ft @ 3200 rpm

Fuel Type:

Unleaded Gasoline

Compression Ratio 3.5L:

9.8:1

Compression Ratio 3.9L:

9.7:1

Induction Type:

Multi-port Fuel Injection (MPFI)

Fuel Octane Recommendation:

87 Octane (Minimum)

🔧 Transmission

Transmission Standard Type:

4-speed Automatic (4T65-E)

Transmission Optional Type:

6-speed Automatic (6T70/6T75)

Transmission Control:

Electronic control with manual shift mode (on 6-speed)

Transmission Fluid Type:

Dexron-VI Automatic Transmission Fluid

📐 Dimensions

Length:

199.7 inches (5072 mm)

Width:

72.9 inches (1852 mm)

Height:

58.7 inches (1491 mm)

Wheelbase:

115.6 inches (2936 mm)

Passenger Volume:

104.1 cubic feet (2.95 m³)

Trunk Volume:

16.9 cubic feet (0.48 m³)

Curb Weight Approx:

3700-3900 lbs (1678-1769 kg)

Standard Wheel Size:

16-inch alloy

Optional Wheel Size:

17-inch alloy, 18-inch polished alloy

Standard Tire Size 16 Inch:

P225/60R16

Standard Tire Size 17 Inch:

P225/55R17

Bolt Pattern:

5 x 115mm

🛡️ Safety Features

NHTSA Frontal Crash Driver:

★★★★★ (5-Star)

NHTSA Frontal Crash Passenger:

★★★★★ (5-Star)

NHTSA Side Crash Driver:

★★★★★ (5-Star)

NHTSA Side Crash Rear Passenger:

★★★★☆ (4-Star)

IIHS Roof Strength:

Good

IIHS Side Impact:

Good

IIHS Rear Impact Head Restraints:

Good

Traction Control:

Standard

Electronic Stability Control:

Standard (StabiliTrak)

Anti Lock Brakes:

Standard

Airbags Front:

Driver and front passenger airbags

Airbags Side:

Front seat-mounted side-impact airbags

Airbags Curtain:

Front and rear side-curtain airbags

Seat Belts:

Three-point belts for all seating positions, front pretensioners

💡 Technology Features

Infotainment System:

Chevrolet MyLink (available on some trims), AM/FM/CD/MP3 player, auxiliary audio input

Optional Audio:

Bose premium audio system, SiriusXM Satellite Radio

Parking Assistance:

Rear parking assist sensors (optional)

Visibility Enhancements:

Fog lamps (optional)

Connectivity Options:

OnStar communications system with turn-by-turn navigation and emergency services (subscription required)

Keyless Entry:

Remote keyless entry

Remote Start:

Remote vehicle starter system (optional)

🔧 Maintenance

Oil Change Interval Synthetic:

Every 7,500 - 10,000 miles (or as indicated by oil life monitor)

Air Filter Replacement:

Every 30,000 miles or as needed

Cabin Air Filter Replacement:

Every 15,000 - 30,000 miles

Spark Plug Replacement 3.5L:

Every 100,000 miles (iridium-tipped)

Spark Plug Replacement 3.9L:

Every 100,000 miles (iridium-tipped)

Transmission Fluid Change:

Every 60,000 - 100,000 miles (depending on driving conditions, refer to manual for specifics)

Engine Oil Type:

SAE 5W-30 Synthetic (API SN or newer)

Engine Oil Capacity 3.5L:

5.0 US quarts (4.7 liters) with filter

Engine Oil Capacity 3.9L:

4.5 US quarts (4.3 liters) with filter

Coolant Type:

GM Dex-Cool (Orange) or equivalent silicate-free, long-life coolant

Coolant Capacity:

Approx. 12.5 US quarts (11.8 liters)

Common Concern 1:

Transmission issues (e.g., shifting problems, torque converter shudder, especially with 4T65-E)

Common Concern 2:

Power steering pump leaks or noise

Common Concern 3:

Wheel bearing failure

Common Concern 4:

Front suspension component wear (ball joints, bushings)

Common Concern 5:

Water pump leaks

📚 Vehicle History

Chevrolet Legacy:

Founded in 1911, Chevrolet is one of America's oldest and most iconic automotive brands, known for a wide range of vehicles from economical commuters to performance cars.

Impala Heritage:

The Impala nameplate has a long and storied history in the Chevrolet lineup, dating back to 1958. It has evolved through numerous generations, from stylish coupes and sedans to its modern full-size sedan iteration.

W Body Platform:

The 2011 Impala is based on GM's W-body platform, which also underpinned other popular GM sedans like the Buick LaCrosse and Pontiac Grand Prix. This generation of the W-body saw significant refinements in ride quality and handling.

Manufacturing Location:

Delta Township, Michigan, USA

Production Years This Generation:

2006-2013 (with facelifts)

🏆 Awards & Recognition

Safety Award NHTSA:

Top Safety Pick (earlier models, consistent safety ratings maintained for 2011)

Consumer Reports Reliability:

Generally rated average to above average for reliability in its class by consumer advocacy groups for this generation.