Market Position:
The Chevrolet Impala in 2009 was positioned as a full-size sedan, offering a balance of comfort, space, and performance. It competed with vehicles like the Ford Taurus, Toyota Avalon, and Chrysler 300.
Competitive Analysis:
The 2009 Impala offered a compelling package, particularly with its available V8 engine, distinguishing it from many front-wheel-drive competitors. Its spacious interior and comfortable ride made it a popular choice for families and highway cruising.
Key Features:
Optional 5.3L V8 engine (LS, LT, LTZ trims), front-wheel drive, comfortable and spacious interior, available leather seating, premium audio systems, strong safety features.
Systems Covered:
Engine (including diagnostics, repair, overhaul), Drivetrain (transmission, axles, differentials), Brakes (hydraulic, ABS, EBD), Suspension (front and rear), Steering, Electrical System (wiring diagrams, components, diagnostics), HVAC (heating, ventilation, air conditioning), Fuel System, Cooling System, Exhaust System, Body & Chassis, Restraints (airbags, seatbelts), Interior/Exterior Trim, Lighting, Emissions Control.
Electrical System Detail:
Comprehensive wiring diagrams, fuse box locations and descriptions, component testing procedures, diagnostic trouble code (DTC) explanations and repair strategies.
Body And Chassis Repair:
Includes procedures for body panel removal/installation, frame straightening, collision repair considerations, and interior trim panel access.
Procedures Included:
Routine maintenance (oil changes, filter replacements, fluid checks), troubleshooting guides, diagnostic procedures, component removal and installation, repair procedures for all major systems, electrical diagnostics, torque specifications, specifications for clearances and adjustments, factory-recommended procedures, common problem diagnosis and repair.
Troubleshooting Guides:
Detailed step-by-step troubleshooting flowcharts and diagnostic trees for common and uncommon problems across all systems.
Specifications And Tolerances:
Precise torque specifications for all fasteners, critical engine clearances, suspension alignment specifications, and other measurement data required for correct repair and assembly.
Technical Depth:
Factory-derived, OE (Original Equipment) level detail suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic maintenance to complete engine and transmission rebuilds, complex electrical diagnostics, and bodywork repairs.
Diagnostic Tools Required:
Mentions use of GM Tech 2 scan tool or equivalent OBD-II scanner for advanced diagnostics and module programming.
Primary Engine:
3.5L V6 OHV (211 hp @ 5200 rpm, 216 lb-ft @ 4000 rpm) - standard on LS, 1LT
Secondary Engine:
3.9L V6 OHV (242 hp @ 5800 rpm, 240 lb-ft @ 4000 rpm) - standard on 2LT, LTZ
Optional Engine:
5.3L V8 OHV (303 hp @ 5300 rpm, 323 lb-ft @ 4400 rpm) - standard on SS trim
Performance:
0-60 mph times varied by engine, with the V8 SS achieving times in the low 6-second range. V6 models offered respectable acceleration for daily driving.
Fuel System:
Sequential Fuel Injection (SFI)
Engine Codes:
3.5L: LZ4; 3.9L: LZ9; 5.3L V8: LS4
Emission Control:
Closed-loop fuel control, catalytic converter, onboard diagnostics (OBD-II).
Engine Oil Capacity:
3.5L/3.9L V6: 5 quarts (4.7 liters); 5.3L V8: 6 quarts (5.7 liters) (with filter change, check manual for exact capacity)
Standard:
4-speed automatic transmission (4T65-E) for 3.5L and 3.9L V6 engines.
Optional:
4-speed automatic transmission (4T65-E HD) for 5.3L V8 SS trim.
Features:
Driver Shift Control (manual mode), electronically controlled with overdrive.
Transmission Fluid:
Dexron VI Automatic Transmission Fluid (ATF)
NHTSA Front Driver:
5 Stars
NHTSA Front Passenger:
5 Stars
NHTSA Side Driver:
5 Stars
NHTSA Side Rear Passenger:
5 Stars
Active Features:
Anti-lock Braking System (ABS), Traction Control System (TCS), StabiliTrak Electronic Stability Control (ESC) standard on LTZ and SS trims.
Passive Features:
Frontal airbags (driver and passenger), front side-impact airbags, side curtain airbags (front and rear), front seatbelt pretensioners, LATCH child seat anchors.
Infotainment System:
Optional touch-screen navigation system, AM/FM stereo with CD player, MP3 playback, auxiliary audio input. Higher trims offered premium Bose® audio systems.
Driver Assistance:
Rear parking assist (optional).
Connectivity:
OnStar® communication system (subscription required), Bluetooth® for hands-free calling (optional on some trims).
Convenience Features:
Remote keyless entry, power adjustable pedals, dual-zone automatic climate control (optional).
Oil Change Interval:
Every 7,500 miles or 12 months, whichever comes first, under normal driving conditions. Consult manual for severe driving conditions.
Tire Rotation Interval:
Every 7,500 miles
Engine Air Filter Replacement:
Every 30,000 miles or as needed based on inspection.
Cabin Air Filter Replacement:
Every 20,000 miles or as needed.
Engine Oil Type:
SAE 5W-30 (for all engines, including V8. Check specific fill level and type in manual.)
Coolant Type:
GM P/N 12346190 (Dex-Cool, Orange) or equivalent, pre-diluted 50/50.
Power Steering Fluid Type:
Dexron VI ATF or GM specified power steering fluid.
Known Issues:
Potential for transmission solenoid issues, occasional power steering pump noise, some reports of catalytic converter failure. The 5.3L V8 can experience Active Fuel Management (AFM) lifter/camshaft issues if not properly maintained or if oil pressure is insufficient.
Oil Filter Part Number Example:
ACDelco PF46 or equivalent
Engine Air Filter Part Number Example:
ACDelco 19179463 or equivalent
Cabin Air Filter Part Number Example:
ACDelco CF136 or equivalent
Brand Heritage:
Chevrolet has a long and storied history in American automotive manufacturing, known for producing reliable and accessible vehicles for a wide range of consumers.
Model Evolution:
The Impala nameplate has been a cornerstone of Chevrolet's lineup for decades, evolving from a stylish coupe to a full-size sedan. The 2009 model represents the eighth generation, built on the versatile W-body platform shared with other GM sedans.
Production Location:
General Motors Oshawa Car Assembly plant in Oshawa, Ontario, Canada.
Production Years:
Eighth Generation: 2006-2013
Wheel Size Standard:
16-inch (LS), 17-inch (1LT, 2LT), 18-inch (LTZ), 18-inch (SS)
Tire Size Standard:
P225/60R16 (LS), P225/55R17 (LT trims), P225/50R18 (LTZ), P225/60R18 (SS)
