The 1994 Chevrolet Impala, built on the robust B-Body platform, represents a classic American rear-wheel-drive sedan. It offers a comfortable ride and powerful performance, often featuring a 5.7L LT1 V8 engine that produces 260 horsepower and 330 lb-ft of torque, though a 5.0L V8 was also available. Known for its spacious interior and traditional styling, the Impala competed with other large sedans of its era, emphasizing reliability and a smooth driving experience. This model year continued Chevrolet's legacy of producing substantial, capable vehicles. This comprehensive service and repair manual provides factory-level detail for the 1994 Chevrolet Impala. It covers an extensive range of systems, including the engine, fuel, ignition, braking, steering, suspension, driveline, chassis, and HVAC. The manual details essential maintenance procedures, such as oil and fluid changes, tire rotations, and filter replacements, along with in-depth troubleshooting and repair guidance for all major components. With clear instructions, electrical wiring diagrams, and technical specifications, this resource is invaluable for owners, mechanics, and technicians seeking to maintain and repair the vehicle effectively. 🏷️ Basic Information Identification Make: Chevrolet Model: Impala Year: 1994 Platform: B-Body Codes Vin Code: 1G4AP 👋 Introduction Market Position Market Position: The 1994 Chevrolet Impala represented a blend of traditional American large car comfort and performance, often targeted at consumers seeking a reliable and spacious sedan. Competitive Analysis Competitive Analysis: Competed against models like the Ford Crown Victoria, Mercury Grand Marquis, and Chrysler New Yorker. The Impala offered a strong V8 option and a focus on smooth ride quality. Key Features Key Features: Rear-wheel drive, body-on-frame construction, robust V8 engine options, spacious interior, comfortable ride, classic American sedan styling. 📋 Manual Details Coverage Areas Coverage Areas: Comprehensive service and repair for 1994 Chevrolet Impala Page Count Page Count: Estimated 1000+ pages (typical for full factory service manuals) Manual Type Manual Type: Official Service and Repair Manual Software (digitized factory data) Language Language: English Format Format: PDF Download (accessible via web browser) 📖 Manual Coverage Systems Covered Systems Covered: Engine mechanical, engine electrical, fuel system, exhaust system, cooling system, lubrication system, ignition system, braking system, steering system, suspension system, driveline, chassis, body electrical, heating and air conditioning (HVAC), emissions control, diagnostic procedures. Specific Engine Systems: Fuel delivery, ignition timing, emissions controls (EGR, catalytic converter), power steering, charging system (alternator, battery), starter motor, engine diagnostics. Body And Interior: Door mechanisms, window operation, seat adjustments, interior trim removal, body panel repair, rust prevention, weatherstripping. HVAC System: Refrigerant handling, compressor service, condenser and evaporator service, blower motor replacement, heater core replacement, climate control system diagnosis. Procedures Included Procedures Included: Scheduled maintenance, routine servicing, diagnostic troubleshooting, component removal and installation, repair procedures, adjustments, torque specifications, electrical wiring diagrams, component testing, rebuild procedures, specifications and data. Specific Brake Procedures: Brake pad replacement, rotor resurfacing/replacement, caliper service, brake bleeding, ABS diagnostics and repair. Specific Suspension Procedures: Ball joint replacement, control arm bushing service, shock absorber/strut replacement, spring replacement, wheel alignment specifications. Engine Rebuild: Piston and ring installation, bearing replacement, cylinder head removal and installation, camshaft and valvetrain service, crankshaft and connecting rod procedures. Driveline Service: Driveshaft inspection and repair, universal joint replacement, rear axle differential service (fluid change, bearing inspection). Technical Depth Technical Depth: Factory-level detail, suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic fluid changes to complex engine and transmission overhauls. Diagnostic Troubleshooting: Detailed diagnostic flowcharts for various electrical and mechanical issues, including specific fault codes and their meanings. Wiring Diagrams: Comprehensive electrical schematics for all vehicle systems, including power distribution, lighting, ignition, engine controls, and accessories. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution scans of original factory documents, ensuring clarity of text and diagrams. Binding Type Binding Type: N/A (Digital download) Paper Type Paper Type: N/A (Digital download) ⚙️ Engine Specifications Primary Engine Primary Engine: 5.7L (350 cu in) V8 (LT1) Secondary Engine Secondary Engine: 5.0L (305 cu in) V8 (L03) - Base engine in some configurations Performance Lt1 Horsepower Lt1: 260 hp @ 5000 rpm Torque Lt1: 330 lb-ft @ 3200 rpm Fuel System Fuel System: Sequential Central Port Fuel Injection (SCPI) for LT1, Throttle Body Injection (TBI) for L03. Ignition System Ignition System: Distributorless Ignition System (DIS) for LT1, Conventional distributor for L03. Engine Management Engine Management: Engine Control Module (ECM) Engine Codes Engine Codes Covered: LT1, L03 🔧 Transmission Standard Standard Transmission: 4-speed automatic (4L60-E) Optional Optional Transmission: N/A (only automatic offered for this model year) Features Transmission Features: Electronic controls, lock-up torque converter for improved fuel economy. Fluid Type Transmission Fluid Type: Dexron-III Automatic Transmission Fluid (ATF) 📐 Dimensions Exterior Length Exterior Length: 207.0 inches Exterior Width Exterior Width: 74.4 inches Exterior Height Exterior Height: 54.5 inches Wheelbase Wheelbase: 116.0 inches Weights Curb Weight: Approx. 3700-3900 lbs (depending on engine and options) 🛡️ Safety Features Ratings NHTSA Driver Front Impact...