Basic Information Identification Make: Chevrolet Model: Lumina Year: 1999 Trim Level: All Trims (including base, LS, LT, Z34) Codes Platform: GM W-body Introduction Market Position Segment: Mid-size Sedan/Coupe Competitive Analysis Competitors 1999: Ford Taurus, Toyota Camry, Honda Accord, Nissan Maxima, Chrysler Concorde Key Features Usp For Owner: Affordable mid-size vehicle offering good comfort and practicality, with multiple engine options. Usp For Mechanic: Well-documented platform with readily available parts; the W-body platform was shared across several GM divisions. Manual Details Coverage Areas Service And Repair: Comprehensive Page Count Estimated Pages: 1500+ Manual Type Type: Service and Repair Manual (Factory-Derived) Language Language: English Format Format: Digital PDF Download Manual Coverage Systems Covered Powertrain: Engine Mechanical, Engine Performance, Fuel System, Exhaust System, Drivetrain (Front-Wheel Drive), Automatic Transmission (4T60-E) Chassis: Suspension (Front & Rear), Steering System, Brake System (Front Disc, Rear Drum/Disc) Electrical: Body Control Modules, Powertrain Control Module (PCM), Lighting Systems, Instruments and Gauges, Audio Systems, HVAC Controls, Power Accessories (Windows, Locks, Mirrors), Ignition System, Charging System, Starting System, Wiring Diagrams Body: Body Panels, Doors, Windows, Seats, Interior Trim, Bumpers, Exterior Trim, HVAC System (Components and Operation) Procedures Included Maintenance: Oil Change, Filter Replacement, Fluid Checks and Top-offs, Tire Rotation, Belt Inspection/Replacement, Spark Plug Replacement, Brake Pad Replacement, Wiper Blade Replacement Repair: Engine Overhaul (minor/major), Transmission Service and Repair, Brake System Overhaul, Suspension Component Replacement (shocks, struts, ball joints, tie rods), Steering Component Replacement, Electrical Component Diagnosis and Replacement, HVAC System Repair, Cooling System Service, Fuel System Cleaning and Component Replacement Diagnostics: Troubleshooting Charts, Symptom-based Diagnosis, Diagnostic Trouble Codes (DTCs) and their Meanings, PCM Scan Tool Procedures, Wiring Harness Testing Technical Depth Depth: Detailed diagnostics, component removal/installation, torque specifications, technical service bulletins (TSBs) referencing, overhaul procedures Manual Specifications File Format Digital Quality: High-resolution, searchable PDF with clear text and schematics Print Quality Printability: Printable pages for convenient workshop use Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Engine Specifications Primary Engine Engine 1: 3.1L (191 cu in) V6 (VIN M) Engine 1 Horsepower: 160 hp @ 5200 rpm Engine 1 Torque: 185 lb-ft @ 4000 rpm Optional Engine Engine 2: 3.8L (231 cu in) V6 (VIN L - Supercharged available on Z34) Engine 2 Horsepower: 200 hp @ 5200 rpm (NA) / 240 hp @ 5200 rpm (SC) Engine 2 Torque: 225 lb-ft @ 4000 rpm (NA) / 280 lb-ft @ 3600 rpm (SC) Fuel System Fuel Delivery: Multi-port Fuel Injection (MPFI) Fuel Type: Unleaded Gasoline Fuel Octane Recommendation: 87 Octane (Premium recommended for Supercharged) Transmission Standard Transmission Type: 4-speed Automatic (4T60-E) Optional Transmission Type Optional: N/A (All Lumina models for 1999 were FWD with automatic transmission) Features Transmission Features: Electronic controls, overdrive Dimensions Exterior Wheelbase: 107.5 inches Length: 197.5 inches Width: 71.4 inches Height: 55.8 inches Cargo Trunk Volume Sedan: 16.0 cu ft Weights Curb Weight Approx: 3300 - 3600 lbs (depending on engine and trim) Safety Features Ratings NHTSA Frontal Driver Star: 4 Stars NHTSA Frontal Passenger Star: 4 Stars IIHS Moderate Overlap Front: Acceptable Active Features ABS: Standard on most trims, Optional on base models Traction Control: Optional on some trims Passive Features Airbags: Driver and Front Passenger Airbags Seatbelts: 3-point front and rear seatbelts Technology Features Infotainment Audio System: AM/FM Stereo Cassette and CD Player options, optional premium sound systems Driver Assistance Cruise Control: Standard on most trims Connectivity Onstar: N/A for 1999 models Maintenance Service Intervals Oil Change Interval: Every 3,000 - 5,000 miles or 3-6 months (depending on driving conditions and oil type) Transmission Fluid Change: Every 30,000 - 50,000 miles (recommended) Spark Plug Replacement: Every 60,000 - 100,000 miles (depending on plug type) Coolant Flush: Every 30,000 miles or 2 years Fluid Specifications Engine Oil Type: API Service SG or SH, SAE 5W-30 (preferred), 10W-30 also acceptable Engine Oil Capacity: 4.5 quarts (3.1L V6) / 4.5 quarts (3.8L V6) with filter Transmission Fluid Type: Dexron III (or equivalent) Coolant Type: GM-spec (Green) ethylene glycol-based antifreeze Brake Fluid Type: DOT 3 Known Issues Intake Manifold Gaskets: Common coolant leaks and overheating issues due to failing intake manifold gaskets, especially on the 3.1L and 3.8L engines. Window Regulators: Failure of power window regulators is a common complaint. Engine Mounts: Worn engine mounts can lead to excessive vibration and clunking noises, particularly under acceleration. Transmission Hard Shifting: The 4T60-E transmission can sometimes develop issues with hard shifting or delayed engagement. Vehicle History Brand Heritage Chevrolet Legacy: Chevrolet, founded in 1911, has a long history of producing reliable and accessible vehicles for the American market. Model Evolution Lumina Introduction: The Lumina was introduced in 1990 as Chevrolet's flagship front-wheel-drive sedan and coupe, replacing the Chevrolet Celebrity and Chevette. Lumina Second Generation: The 1995 model year marked the second generation of the Lumina, featuring a significant redesign with sleeker styling and improved aerodynamics. The 1999 model...