The 1990 Buick Regal represents a segment of automotive history built on the versatile GM W-body platform. This model offers a blend of comfort and personal luxury, characteristic of Buick's heritage, and was available with robust V6 engine options, including a 3.1L and a more powerful 3.8L, both paired with a smooth 4-speed automatic transaxle. Its design, typical of the late 1980s and early 1990s, emphasizes aerodynamic lines and a comfortable ride, making it a suitable choice for daily commuting and longer journeys. The Regal was engineered for reliability and ease of maintenance, reflecting Buick's commitment to providing durable and user-friendly vehicles. This comprehensive Service and Repair Manual Software provides detailed guidance for the 1990 Buick Regal. It covers a wide array of essential procedures, including routine maintenance such as oil changes and fluid checks, as well as in-depth repair and component replacement for powertrain, chassis, and electrical systems. The manual also offers valuable troubleshooting and diagnostic information to help identify and resolve common issues. Designed for both DIY enthusiasts and professional technicians, this resource aims to empower users with the knowledge needed to effectively maintain, repair, and optimize their vehicle's performance and longevity, ensuring it remains in excellent condition. 🏷️ Basic Information Identification Make: Buick Model: Regal Year: 1990 Codes Platform: GM W-body 👋 Introduction Market Position Target Audience: DIY enthusiasts, independent repair shops, Regal owners seeking to maintain their vehicle Competitive Analysis Advantage Over Print: Convenience, instant access, cost-effectiveness, searchability, digital portability Key Features Licensing: Officially Licensed, ensuring accuracy and completeness of OE data User Friendliness: Easy-to-navigate interface, push-button access to information Cost Savings: Enables users to perform repairs and maintenance themselves, saving on labor costs 📋 Manual Details Identification Manual Type: Service and Repair Manual Software Manual Origin: Officially Licensed, OE Materials Derived Developer: RepairSurge Coverage Areas Primary Coverage: Repair and Maintenance Secondary Coverage: Troubleshooting, Diagnostics, Component Replacement Format File Format: PDF Download Access Method: Online, Web Browser Access Device Compatibility: PC, Laptop, Smartphone, Tablet Access Duration: 1 Year (with renewal discounts) Language Primary Language: English 📖 Manual Coverage Systems Covered Powertrain: Engine (3.1L V6, 3.8L V6), Transmission (Automatic) Chassis: Suspension (Front MacPherson Strut, Rear Independent), Steering (Power Rack and Pinion), Brakes (Front Disc, Rear Drum) Electrical: Wiring Diagrams, Lighting, Ignition, Starting, Charging, Instrumentation Climate Control: Heating, Ventilation, Air Conditioning (HVAC) Body: Body Panels, Doors, Windows, Interior Trim Procedures Included Maintenance: Oil Changes, Filter Replacements, Spark Plug Service, Fluid Checks and Top-offs Repair: Engine Component Replacement (e.g., water pump, alternator), Transmission Service, Brake Pad and Rotor Replacement, Suspension Component Replacement (e.g., ball joints, struts) Diagnostics: Troubleshooting Engine Performance Issues, Identifying Electrical Faults, Diagnosing Suspension Noises Technical Depth Depth Level: Comprehensive from basic maintenance to advanced repairs and diagnostics 📊 Manual Specifications File Format PDF Quality: High-resolution, printable pages Searchability: Searchable text for quick information retrieval Print Quality Print Recommendation: Printable for offline use Binding Type Binding Not Applicable: Digital Format Paper Type Paper Type Not Applicable: Digital Format ⚙️ Engine Specifications Primary Engine Engine Code 1: 3.1L V6 (VIN M) Engine Displacement 1: 3100 cc (189 cubic inches) Engine Type 1: Naturally Aspirated, Sequential Fuel Injection (SFI) Horsepower 1: Approx. 140 hp @ 4400 rpm Torque 1: Approx. 180 lb-ft @ 2000 rpm Optional Engine Engine Code 2: 3.8L V6 (VIN 3) Engine Displacement 2: 3800 cc (231 cubic inches) Engine Type 2: Naturally Aspirated, Sequential Fuel Injection (SFI) Horsepower 2: Approx. 165 hp @ 4400 rpm Torque 2: Approx. 200 lb-ft @ 2000 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) / Sequential Fuel Injection (SFI) Recommended Fuel: 87 Octane Unleaded Gasoline 🔧 Transmission Standard Transmission Type: 4-Speed Automatic Transaxle Transmission Model: GM 4T60 Features Transmission Control: Electronic Control Unit (ECU) for shift points and diagnostics Fluid Type Transmission Fluid Spec: Dexron III Automatic Transmission Fluid 📐 Dimensions Exterior Length: Approx. 195.8 inches Width: Approx. 71.1 inches Height: Approx. 54.5 inches Wheelbase Wheelbase: Approx. 107.5 inches Weights Curb Weight Range: Approx. 3200-3400 lbs (depending on engine and options) 🛡️ Safety Features Passive Features Airbags: Driver-side airbag (standard) Seat Belts: Front and rear seat belts Child Safety: Rear door child safety locks Active Features Braking System: Power-assisted front disc brakes, rear drum brakes ABS: Anti-lock Braking System (ABS) optional on some trims 💡 Technology Features Infotainment Audio System: Factory AM/FM stereo with cassette player, optional CD player, optional premium sound systems. Dashboard: Analog gauges for speedometer, tachometer, fuel, and temperature; warning lights for critical systems. Driver Assistance Cruise Control: Standard or optional depending on trim level. Connectivity Connectivity Features: Limited by era; primarily analog systems, no digital connectivity like Bluetooth or USB. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-7,500 miles or 6-12 months (refer to manual for specific engine/oil type) Engine Oil Filter Replacement: With every oil change Spark Plug Replacement: Approx. 60,000 -...