🏷️ Basic Information

Make:

Cadillac

Model:

Seville

Model Years:

1998, 1999, 2000, 2001, 2002, 2003, 2004

Chassis Codes:

G-Body (K-Body for STS/SLS models)

Vin Prefix:

1GC

👋 Introduction

Positioning:

The Cadillac Seville was positioned as a premium, near-luxury sedan, competing with other domestic and international marques in the mid-size luxury segment. It offered a blend of comfort, technology, and performance for its era.

Competitors:

Competed against vehicles such as the Lincoln Continental, Chrysler LHS/Concorde, and imports like the BMW 5 Series, Mercedes-Benz E-Class, and Lexus LS.

Features:

Optional Northstar V8 engine, Magnetic Ride Control (on some later models), advanced driver information systems, premium audio, and a focus on comfortable and quiet interior.

📋 Manual Details

Coverage:

Includes all trim levels and engine options for the 1998-2004 Cadillac Seville, specifically the SLS (Sport Luxury Sedan) and STS (Sport Touring Sedan).

Estimated Pages:

~200-300 pages (typical for this era and model)

Type:

Owner's Manual

Language:

English

Format:

PDF on CD

📖 Manual Coverage

Covered Systems:

Vehicle identification, controls and instruments, climate control, audio systems, seats and restraints, driving and operating, vehicle care and cleaning, vehicle maintenance, fluid capacities and specifications, tire information, emergency procedures, starting and operating the vehicle, trailer towing, vehicle security, driver information center, lighting, warning indicators, anti-lock braking system (ABS), traction control, cruise control, suspension, power steering, fuel system, cooling system, exhaust system, electrical system, battery, charging system, ignition system, lighting system, body and frame, doors and locks, windows, mirrors, seats, safety belts, airbags, interior trim, exterior trim, bumpers, wheels and tires, windshield wipers and washers, climate control system, heating, ventilation, and air conditioning (HVAC), audio system, navigation system (if equipped), communication system (if equipped).

Included Procedures:

Normal operating procedures, starting the engine, shifting gears, parking, filling fuel tank, checking and adding fluids (oil, coolant, brake fluid, power steering fluid, windshield washer fluid), changing wiper blades, tire pressure checks, basic interior/exterior cleaning, locating and understanding dashboard warning lights, proper use of safety belts and airbags, using the climate control system, operating the audio system, basic troubleshooting tips, understanding vehicle maintenance schedules, emergency towing procedures, safe loading of luggage.

Depth:

Comprehensive owner-level information focusing on operation, basic maintenance, and safety features. Not a service or repair manual, so it does not cover in-depth diagnostics or repair procedures. Focuses on user-friendly explanations for everyday use.

📊 Manual Specifications

File Format:

PDF

Print Quality:

High resolution for clear text and image reproduction. Optimized for digital viewing and printing.

Binding Type:

N/A (Digital Format on CD)

Paper Type:

N/A (Digital Format on CD)

⚙️ Engine Specifications

Engine 1:

4.6L Northstar V8 (LD8 - 275 hp @ 6000 rpm, 300 lb-ft @ 4000 rpm)

Engine 2:

4.6L Northstar V8 (L37 - 275 hp @ 6000 rpm, 300 lb-ft @ 4000 rpm) - Tuned for performance in STS

Engine 3:

4.6L Northstar V8 (L37 - 300 hp @ 6000 rpm, 295 lb-ft @ 4400 rpm) - Tuned for performance in STS (later models)

Engine 4:

4.6L Northstar V8 (LD8 - 270 hp @ 6000 rpm, 292 lb-ft @ 4400 rpm) - Standard in SLS

Horsepower Range:

270-300 hp

Torque Range:

292-300 lb-ft

Fuel Delivery:

Sequential Port Fuel Injection (SFI)

Block Material:

Aluminum

Head Material:

Aluminum

🔧 Transmission

Transmission Type Standard:

4-speed automatic (4T80-E)

Transmission Type Optional:

N/A (4T80-E was standard across the range)

Transmission Features:

Front-wheel drive (FWD), driver-selectable modes (e.g., Normal/Sport on some models), electronically controlled.

📐 Dimensions

Wheelbase:

~110.2 inches (2799 mm)

Length:

~201.2 inches (5110 mm)

Width:

~73.1 inches (1857 mm)

Height:

~56.0 inches (1422 mm)

Curb Weight Range:

~3700-3900 lbs (1678-1769 kg)

Trunk Capacity:

~16.7 cubic feet (473 liters)

🛡️ Safety Features

NHTSA Front Impact Driver:

Good (for its era, based on available data)

NHTSA Front Impact Passenger:

Good (for its era, based on available data)

IIHS Side Impact:

Acceptable (for models equipped with side airbags, availability varied)

Active Safety:

Anti-lock Braking System (ABS), Traction Control System (TCS), available StabiliTrak stability control (later models).

Passive Safety:

Front airbags (driver and passenger), available front side-impact airbags, front and rear seatbelts with pretensioners, LATCH child seat anchors (later in the production run).

💡 Technology Features

Audio System:

Bose premium audio system with CD player and cassette tape player (standard on most models). Optional premium sound systems available.

Navigation:

Optional factory-installed GPS navigation system with a touchscreen interface.

Cruise Control:

Standard cruise control. Adaptive cruise control was not widely available or standard on this generation.

Parking Assist:

Rear parking assist sensors were an option on later models.

Phone Integration:

Early models might have had optional integrated cellular phone systems; later models may offer Bluetooth connectivity depending on trim and options.

Driver Information Center:

Digital display offering trip computer, fuel economy, diagnostic messages, and system status.

🔧 Maintenance

Oil Change Interval:

Every 3,000-5,000 miles or 3-6 months, using synthetic blend or full synthetic oil. Consult manual for exact recommendations based on driving conditions.

Transmission Fluid Change:

Every 30,000-50,000 miles, or as specified by driving conditions (severe vs. normal). Use DEXRON-VI or equivalent.

Coolant Change:

Every 50,000-100,000 miles, or 3-5 years. Use Dex-Cool (orange silicate-free) coolant.

Spark Plug Replacement:

Typically around 100,000 miles for platinum or iridium plugs.

Engine Oil Type:

SAE 5W-30, Dexos1 Gen2 or API SN/SP certified synthetic oil recommended.

Engine Oil Capacity:

~4.5 quarts (4.2 liters) with filter

Transmission Fluid Type:

DEXRON-VI Automatic Transmission Fluid (ATF)

Coolant Type:

GM P/N 12378515 (Orange) Dex-Cool Extended Life Antifreeze/Coolant (50/50 mix)

Brake Fluid Type:

DOT 3 or DOT 4

Power Steering Fluid Type:

GM P/N 1050017 (or equivalent) Power Steering Fluid

Common Problems Engine:

Northstar engine can be prone to coolant leaks (intake manifold gaskets, head gaskets), oil consumption, and occasional timing chain tensioner issues. Proper maintenance is crucial.

Common Problems Transmission:

The 4T80-E transmission is generally robust but can experience solenoid failures, torque converter issues, or seal leaks if not maintained properly.

Common Problems Suspension:

Front suspension components (ball joints, tie rod ends, control arm bushings) can wear over time due to vehicle weight and mileage. Magnetic Ride Control (if equipped) can develop sensor or actuator issues.

Common Problems Electrical:

Issues with body control modules (BCM), power window regulators, door lock actuators, and dashboard warning lights (e.g., 'Service Vehicle Soon' message) can occur.

Common Problems Climate Control:

Dual-zone climate control system can sometimes experience issues with blend door actuators or HVAC control modules.

📚 Vehicle History

Heritage:

Cadillac, established in 1902, is America's premier luxury automotive brand, known for its innovation, comfort, and performance.

Evolution:

The Seville shared its platform with the Oldsmobile Aurora and Buick Riviera. The 1998-2004 generation represented a significant update, focusing on refined styling, the Northstar engine, and advanced features for its time. It was the final generation of the Seville nameplate before being replaced by the Cadillac DTS.

Production Location:

Hamtramck, Michigan, USA (GM Assembly Plant)

Production Years For Generation:

1998-2004

🏆 Awards & Recognition

Editorial Awards:

The Northstar V8 engine received significant praise for its smooth power delivery and sophisticated design. The Seville models were generally well-regarded for their comfort and luxury appointments in their segment.

Consumer Ratings:

Consumer satisfaction varied, with positive remarks on comfort and performance but some criticism regarding reliability and long-term maintenance costs, particularly related to the Northstar engine.

Safety Certifications:

Met all US Federal Motor Vehicle Safety Standards (FMVSS) for its model years.