The Storm, produced from 1985 to 1993, is a sports coupe designed with a mid-engine, rear-wheel-drive layout, mirroring the handling characteristics of European sports cars. This platform, shared with other GM vehicles, offered a balanced driving experience and sporty dynamics, further enhanced by its sleek, aerodynamic styling and pop-up headlights. Available with a 2.8L or 3.1L V6 engine, the Storm was marketed as an affordable performance option in North America, competing with other popular sports coupes of its era. Its compact dimensions and focus on driving engagement made it a distinct choice for enthusiasts seeking a spirited driving machine. This comprehensive service manual provides detailed information for the maintenance, repair, and troubleshooting of Storm models from 1985 through 1993. It covers all major vehicle systems, including the powertrain, chassis, electrical components, and body and interior. Within its pages, you will find step-by-step procedures for routine maintenance, in-depth diagnostic guidance, and complex repair instructions for engine, transmission, brakes, suspension, and electrical systems. This manual is an essential resource for owners, technicians, and mechanics aiming to preserve the performance and longevity of their Storm. 🏷️ Basic Information Identification Make: Chevrolet Model: Storm Model Years Covered: 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993 Codes Vehicle Platform: GM T-body (shared with Pontiac Fiero, Chevrolet Camaro/Firebird from earlier generations) Engine Codes: LT8 (2.8L V6), L44 (3.1L V6) 👋 Introduction Market Position Vehicle Segment: Sports Coupe, often marketed as an affordable performance option. Competitive Analysis Key Competitors: Ford Mustang, Pontiac Fiero, Toyota MR2, Honda CRX. Key Features Design Philosophy: Mid-engine, rear-wheel drive layout for balanced handling and sporty driving dynamics, aiming for European sports car feel. Aerodynamics: Sleek, aerodynamic styling with pop-up headlights. 📋 Manual Details Coverage Areas Market Focus: North America (USA, Canada) Manual Type: Full Service Repair Manual Page Count Page Count: Estimated 500-700 pages (typical for comprehensive manuals of this era) Language Language: English Format Format: Digital (PDF) Print Quality: High-resolution scans for clear text and diagrams. Searchable text functionality. Binding Type: N/A (Digital Format) Paper Type: N/A (Digital Format) 📖 Manual Coverage Systems Covered Powertrain: Engine, Fuel System, Ignition System, Exhaust System, Transmission (Manual & Automatic) Chassis: Suspension (Front & Rear), Steering, Brakes (Front Disc, Rear Drum/Disc), Wheels & Tires Electrical: Wiring Diagrams, Lighting, Instrumentation, Accessories, Battery, Charging System, Starting System, Fuses & Relays, Diagnostic Connectors (ALDL) Body And Interior: Body Panels, Doors, Windows, Seats, Trim, HVAC System, Body Control Modules (BCM) related functions Procedures Included Routine Maintenance: Oil Change, Filter Replacements, Spark Plug Replacement, Fluid Checks & Replacements, Belt Adjustments Diagnostic Procedures: Troubleshooting charts based on symptoms, Diagnostic Trouble Codes (DTCs) retrieval and interpretation via ALDL Repair Procedures: Engine overhaul, Transmission overhaul, Brake system repair, Suspension component replacement, Electrical component repair/replacement Component Rebuild: Detailed steps for rebuilding engines, transmissions, and other major components. Technical Depth Diagnostic Level: Advanced diagnostics, including circuit testing, sensor analysis, and actuator testing. Repair Complexity: Covers all repair levels from minor adjustments to major component replacement and full vehicle teardowns. ⚙️ Engine Specifications Primary Engine Engine Name 1: 2.8L V6 (LG8/LT8) Displacement 1: 2793 cc Horsepower 1: 135-140 hp @ 4800-5200 rpm (varies by year and specific engine code) Torque 1: 160-165 lb-ft @ 3200-3600 rpm (varies by year and specific engine code) Engine Name 2: 3.1L V6 (L44/3100) Displacement 2: 3135 cc Horsepower 2: 140 hp @ 4800 rpm Torque 2: 170 lb-ft @ 3200 rpm Performance 0 60 Mph Approx: 7.5-8.5 seconds (depending on engine and transmission) Fuel System Fuel Delivery: Multi-Port Fuel Injection (MPFI) Fuel Type: Unleaded Gasoline (87 octane recommended) Fuel Tank Capacity: 15.5 gallons 🔧 Transmission Standard Transmission Type Standard: 5-speed Manual Optional Transmission Type Optional: 4-speed Automatic (THM-125C, later models may feature updated 4-speed autos) Features Clutch Type: Hydraulic actuation Transmission Fluid Spec: Dexron III (or equivalent) 📐 Dimensions Exterior Length: 166.4 inches Width: 68.2 inches Height: 48.9 inches Wheelbase: 96.4 inches Weights Curb Weight Approx: 2700-2900 lbs (depending on engine and options) 🛡️ Safety Features Ratings NHTSA Crash Test Rating: Not rated by NHTSA for this specific period; era-appropriate safety standards applied. Active Features Braking System: Front Vented Disc, Rear Drum (optional rear discs on some later performance variants) Anti Lock Brakes: Optional on some later models. Passive Features Seatbelts: Three-point retractable front seatbelts, lap belts in rear. Airbags: Not standard. No driver or passenger airbags fitted. 💡 Technology Features Infotainment Audio System: AM/FM stereo with cassette player. Optional premium sound systems available. Climate Control: Manual HVAC system with fan speed and temperature controls. Optional air conditioning. Driver Assistance Cruise Control: Optional Connectivity Diagnostic Port: Assembly Line Diagnostic Link (ALDL) port, typically located under the dash. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 miles or 6 months, whichever comes first. Engine Tune Up Interval: Every 30,000 miles (spark plugs, distributor cap/rotor, plug wires). Transmission Fluid Change:...