Segment:
Full-size Luxury Sedan
Target Audience:
Owners seeking to perform DIY maintenance and repairs, independent repair shops, and automotive enthusiasts.
Competitors:
Competed with luxury sedans like the Lincoln Town Car, Lexus LS, Mercedes-Benz S-Class, and BMW 7 Series.
Vehicle Highlights:
Known for its comfortable ride, powerful V8 engine, sophisticated styling, and advanced features for its era, including optional Magnetic Ride Control.
Manual Value Proposition:
Provides dealership-level technical information, saving users significant costs on repairs and maintenance compared to professional services. Empowers users with in-depth knowledge.
General Coverage:
Complete service, maintenance, diagnostics, and repair for all 2004 Cadillac Seville STS models.
Specific Systems:
Engine, Control System, Mechanical, Fuel Service, Emission Control, Intake/Exhaust/Cooling, Lube, Ignition/Starting/Charging, Automatic Transmission, Manual Transmission, Transfer Case, Drive Shaft, Differential, Axle/Suspension, Tire/Wheel, Brake Control, Brakes, Parking Brake, Steering Column, Power Steering, Air Conditioning, Supplemental Restraint System (SRS), Seat Belt, Engine Immobilizer, Cruise Control, Wiper/Washer, Door Lock, Meter/Audio/Visual, Horn, Windshield/Glass/Mirror, Instrument Panel, Seats, Engine Hood/Doors, Exterior/Interior, Electrical Systems, Multiplex/CAN Communication.
Estimated Page Count:
Extensive, likely exceeding 1500 pages based on typical dealership service manual scope.
Type:
Factory Service Manual / Repair Manual
Operating Systems:
Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac compatible.
Software Requirements:
Adobe PDF Reader and Winzip (or equivalent decompression software).
Powertrain:
Engine mechanical, fuel delivery, ignition, lubrication, cooling, emissions control, exhaust systems, automatic transmission (likely 4-speed 4T80-E or similar), and rear differential.
Chassis:
Suspension (front and rear, likely Magnetic Ride Control for STS), steering (rack and pinion, power assist), brakes (front and rear disc, ABS, traction control), wheels, and tires.
Electrical And Electronics:
Complete electrical system diagnostics, wiring schematics, lighting, power windows/locks/seats, instrument cluster, audio/visual systems, climate control, security systems (immobilizer), cruise control, and body control modules (BCM).
Maintenance:
Scheduled maintenance, fluid changes (oil, coolant, transmission fluid, brake fluid), filter replacements, inspections, and tune-ups.
Diagnostics And Troubleshooting:
System-specific diagnostic procedures, fault code interpretation (OBD-II), symptom-based troubleshooting guides, and component testing methods.
Repair And Rebuild:
Detailed step-by-step repair procedures for all major and minor components, including engine overhaul, transmission repair, suspension component replacement, brake system servicing, and body panel repair.
Wiring Schematics:
Comprehensive electrical wiring schematics for all vehicle systems are included.
Diagnostics:
Detailed diagnostic procedures, including symptom-to-cause charts and guided troubleshooting trees for various electrical and mechanical issues.
Depth:
Expert-level technical depth, including torque specifications, special tool requirements, assembly/disassembly sequences, diagnostic flowcharts, and wiring diagrams. Covers everything a dealership technician would use.
Searchability:
Likely searchable text within the PDF for quick information retrieval.
Printability:
All pages are printable, allowing users to print specific sections or the entire manual.
Image Resolution:
High-resolution diagrams and illustrations are downloadable and can be enlarged for clarity.
Binding:
Digital (no physical binding, user prints as needed)
Paper Type Recommendation:
Standard copier paper recommended for printing.
Engine Type:
Northstar V8
Displacement:
4.6 Liters (280.7 cubic inches)
Horsepower:
Approximately 275-300 hp (depending on exact tuning, STS typically higher)
Torque:
Approximately 295-300 lb-ft (depending on exact tuning, STS typically higher)
Fuel Delivery:
Electronic Fuel Injection (EFI), Sequential Port Injection
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
Length:
Approximately 204.4 inches
Width:
Approximately 71.5 inches
Height:
Approximately 56.6 inches
Curb Weight:
Approximately 3,800 - 4,000 lbs
NHTSA Front Impact:
Likely 5-star rating (based on similar GM vehicles of the era).
NHTSA Side Impact:
Likely 4 or 5-star rating (based on similar GM vehicles of the era).
Active Safety Features:
Anti-lock Braking System (ABS), Traction Control System (TCS), StabiliTrak Stability Control.
Passive Safety Features:
Front airbags, front side-impact airbags, rear side-impact airbags, active head restraints, seat belt pretensioners.
Infotainment System:
Cadillac's Audio System, typically with AM/FM stereo, CD player, and available Bose premium audio. Navigation system was an option.
Driver Assistance Features:
StabiliTrak stability control, Traction Control System (TCS), available Ultrasonic Rear Parking Assist.
Connectivity Features:
OnStar telematics system integration (subscription-based service).
Advanced Comfort Tech:
Optional Magnetic Ride Control adaptive suspension system, dual-zone automatic climate control, heated and ventilated front seats, memory seat function.
Oil Change Interval:
Typically every 7,500 miles or 6 months, or as indicated by the oil life monitor system. Refer to manual for precise interval based on driving conditions.
Transmission Fluid Change:
Recommended every 50,000-100,000 miles, or as per specific driving conditions (e.g., towing, frequent short trips). Consult manual for exact recommendation.
Engine Oil:
SAE 5W-30, API SM or higher certified.
Coolant:
GM P/N 12346290 (or equivalent) - Dex-Cool Extended Life Antifreeze/Coolant (Orange)
Common Issues:
Northstar engine oil leaks (intake manifold gaskets, valve cover gaskets), coolant leaks (water pump, thermostat housing), power steering pump issues, and occasional electronic module failures. Magnetic Ride Control shock absorber leaks/failures are also possible.
Maintenance Focus Areas:
Regularly check and maintain coolant levels and condition, inspect for oil leaks, service transmission fluid, and monitor brake system components.
Cadillac Legacy:
Cadillac, established in 1902, is renowned for pioneering automotive luxury, comfort, and advanced technology, setting benchmarks for American luxury vehicles.
Seville Lineage:
The Seville was Cadillac's entry into the personal luxury coupe and sedan market, often featuring advanced technology and styling cues, with the STS representing its sportier, performance-oriented iteration.
Manufacturing Location:
Hamtramck, Michigan, USA (Detroit/Hamtramck Assembly Plant)
Production Period:
Fifth generation Seville (1998-2004).
