🏷️ Basic Information Identification Make: Cadillac Model: DeVille Year: 1991 👋 Introduction Market Position Target Audience: DIY mechanics and enthusiasts Value Proposition: Cost savings, convenience, and comprehensive licensed information Competitive Analysis Comparison To Print: More convenient, less expensive, and easier to find than old printed manuals Key Features Licensing: Officially licensed by manufacturer (implied by OE materials) Developer: RepairSurge 📋 Manual Details Identification Manual Type: Service & Repair Manual Software Format: Online Access (Web Browser) Language: English Access Duration: 1 Year (with renewal discounts) 📖 Manual Coverage Systems Covered Engine: Yes, comprehensive coverage Drivetrain: Yes, including transmission and drive axles Brakes: Yes, including ABS Suspension: Yes Steering: Yes Electrical: Yes, including wiring diagrams HVAC: Yes, Heat and Air Conditioning Body: Yes, including panels and trim Procedures Included Maintenance: Yes, routine services and inspections Troubleshooting: Yes, diagnostic procedures for common issues Repair: Yes, step-by-step repair instructions Diagnostics: Yes, advanced diagnostic strategies Rebuilds: Implied, as it covers engine and transmission repairs comprehensively Technical Depth Depth: Comprehensive, from basic maintenance to complex repairs Source Data: Licensed OE (Original Equipment) Materials 📊 Manual Specifications Software Features Compatibility: PC, Laptop, Smartphone, Tablet Internet Requirement: Required for access Browser Requirement: Any modern web browser Searchability: Likely, due to digital format and licensed OE data User Interface: Push of a button access, indicating user-friendly design ⚙️ Engine Specifications Primary Engine Engine Code: L05 Engine Type: V8, Overhead Valve (OHV) Displacement: 5.0 L (307 cubic inches) Bore X Stroke: 3.74 in x 3.46 in (95.0 mm x 88.0 mm) Compression Ratio: 8.5:1 Performance Horsepower: 140-155 hp @ 3600 rpm (varies by specific market/tune) Torque: 240-250 lb-ft @ 2400 rpm (varies by specific market/tune) Fuel System Fuel Delivery: Digital Fuel Injection (DFI) Fuel Type: Unleaded gasoline (87 octane recommended) Engine Management ECM: Electronic Control Module (ECM) Ignition System: Electronic Spark Control (ESC) 🔧 Transmission Standard Transmission Type: 4-speed Automatic Overdrive Transmission Model: 4T60-E Features Shift Control: Electronically controlled Fluid Type Transmission Fluid: Dexron-III (or equivalent GM approved fluid) 📐 Dimensions Exterior Length: 202.7 inches Width: 72.2 inches Height: 55.3 inches Wheelbase: 110.8 inches Weights Curb Weight: Approx. 3,700-3,900 lbs 🛡️ Safety Features Passive Features Airbags: Driver-side airbag standard Seatbelts: Front and rear seatbelts Active Features ABS: Anti-lock Braking System (ABS) standard Ratings NHTSA Rollover Rating: Not available for this year/model era 💡 Technology Features Infotainment Audio System: AM/FM Stereo with Cassette Player, optional CD player Climate Control: Automatic Climate Control (optional) Driver Assistance Cruise Control: Standard Trip Computer: Optional, often integrated into digital display 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 miles or 3-6 months (conventional oil) Transmission Fluid Change: Every 30,000-50,000 miles or 24-36 months Spark Plug Replacement: Every 30,000-60,000 miles (depending on plug type) Fluid Specifications Engine Oil Type: API Service SG or SH, SAE 5W-30 recommended for most conditions Coolant Type: GM P/N 1052753 or equivalent (Green ethylene glycol coolant) Brake Fluid Type: DOT 3 Known Issues Fuel Pump: Potential for premature failure Power Steering Pump: Can develop leaks or whine Window Regulators: Can become weak or fail HVAC Blower Motor: Common failure point 📚 Vehicle History Model Evolution Generation: Eighth Generation (C-body platform) Platform: GM C-body platform Design Era: Aerodynamic styling, reduced overhangs compared to predecessors Production Production Location: Detroit/Hamtramck Assembly Plant, Michigan 🏆 Awards & Recognition Recognitions Car And Driver 10Best: The Cadillac DeVille platform has historically been recognized, though specific mentions for the 1991 model are less prominent in readily available historical awards for this specific iteration.