🏷️ Basic Information

Make:

Cadillac

Model:

Seville STS

Year:

1998-2004

Platform:

K-Body

👋 Introduction

Target Audience:

Owners, DIY Enthusiasts, Independent Repair Shops

Value Proposition:

Provides dealership-level technical information for vehicle-specific maintenance and repair, enabling cost savings and empowering owners.

Uniqueness:

Vehicle-specific, not generic; direct equivalent of dealership technician manual.

Format Advantage:

Single, easy-to-use PDF; print only needed pages; no physical wear and tear.

Content Advantage:

Comprehensive, factory-level detail including wiring schematics.

📋 Manual Details

Engine Coverage:

Northstar V8 (4.6L)

Transmission Coverage:

4-speed Automatic (4T80-E)

Trim Level Coverage:

STS (Seville Touring Sedan)

Estimated Page Count:

Extensive (Not Specified, but implies comprehensive)

Type:

Factory Service and Repair Manual

Language:

English

Digital Format:

PDF

📖 Manual Coverage

Powertrain:

Engine, Fuel System, Lubrication, Cooling, Ignition, Starting, Charging, Exhaust, Emission Control, Automatic Transmission

Chassis:

Suspension (Front and Rear), Steering (Power Steering, Steering Column), Brakes (Hydraulic, Parking Brake), Wheels and Tires

Body & Electrical:

Body Panels, Doors, Locks, Glass, Mirrors, Interior Trim, Seats, Instrument Panel, HVAC (Air Conditioning), Restraint Systems (Airbags, Seatbelts), Lighting, Wipers/Washers, Audio/Visual, Cruise Control, Engine Immobilizer, Multiplex/CAN Communication

Maintenance:

Scheduled Maintenance, Fluid Changes, Filter Replacements, Inspections

Diagnostics:

Troubleshooting Flowcharts, Diagnostic Trouble Codes (DTCs), Component Testing

Repair And Rebuild:

Component Removal/Installation, Reassembly, Adjustments, Major Overhauls

Depth:

Complete A-Z Repair Information, Technician-Level Detail

Detail Level:

Step-by-step instructions, detailed diagrams, illustrations, wiring schematics

📊 Manual Specifications

Compatibility:

Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac

Requirements:

Adobe PDF Reader, Winzip

Printability:

Fully Printable (Page-by-Page or Sections)

Image Scalability:

Images can be blown up and printed enlarged

Binding:

Digital (PDF) - No physical binding

Paper Type:

Not Applicable (Digital Format)

⚙️ Engine Specifications

Engine Code:

L37 (4.6L)

Engine Type:

DOHC V8 (Northstar)

Displacement:

4.6 Liters (281 cu in)

Horsepower Est:

~275-300 hp (Varies slightly by year)

Torque Est:

~300-315 lb-ft (Varies slightly by year)

Fuel Delivery:

Sequential Fuel Injection (SFI)

Fuel Type:

Premium Unleaded Gasoline (91 Octane Recommended)

Cooling System Type:

Pressurized Liquid Cooling System

🔧 Transmission

Transmission Type:

4-Speed Automatic

Transmission Model:

4T80-E

Drive Type:

Front-Wheel Drive (FWD)

Transmission Control:

Electronic Control Module (ECM) / Transmission Control Module (TCM)

Fluid Type:

Dexron III (or equivalent)

📐 Dimensions

Length:

Approx. 202.4 inches

Width:

Approx. 74.9 inches

Height:

Approx. 55.3 inches

Curb Weight:

Approx. 3,800 - 4,000 lbs (Varies by option)

Gross Vehicle Weight Rating Gvw:

Not Specified, but typical for class

🛡️ Safety Features

NHTSA Frontal Crash Test Driver:

4-star (1998-2002 models, specific tests apply)

NHTSA Frontal Crash Test Passenger:

4-star (1998-2002 models, specific tests apply)

IIHS Frontal Offset:

Good (for relevant years)

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Standard Traction Control System (TCS)

Stability Control:

Available (StabiliTrak on later models)

Airbags:

Driver and Passenger Frontal Airbags, Available Side Impact Airbags

Seatbelts:

3-Point Front and Rear Seatbelts, Pretensioners

💡 Technology Features

Audio System:

Premium Bose® sound system, optional CD changer.

Climate Control:

Dual-zone automatic climate control, StabiliTrak climate control on some models.

Adaptive Cruise Control:

Optional on some models.

Parking Assist:

Optional Rear Park Assist (Ultrasonic).

Multiplex Communication:

MPV (Multiplexed Vehicle Power) system and CAN communication for various modules.

Navigation:

Optional factory navigation system.

🔧 Maintenance

Oil Change Interval:

Every 3,000-5,000 miles or as per owner's manual, depending on driving conditions and oil type used.

Transmission Fluid Service:

Every 30,000-60,000 miles, depending on driving conditions and manufacturer recommendations.

Spark Plug Replacement:

Typically around 100,000 miles for platinum or iridium plugs used in Northstar engines.

Engine Oil Specification:

SAE 4W-5W30, GM dexos1™ or equivalent synthetic oil recommended for Northstar V8.

Coolant Type:

GM Blue or Dex-Cool® compatible coolant (50/50 mix with distilled water).

Brake Fluid Type:

DOT 3

Engine Common Issue 1:

Head Gasket Failure (especially on earlier Northstar engines, often due to faulty head bolts).

Engine Common Issue 2:

Intake Manifold Gasket Leaks (can lead to coolant or vacuum leaks).

Suspension Common Issue:

Front Strut Mounts and Ball Joints wear.

Electrical Common Issue:

Water pump seal leaks, alternator issues, power window regulators.

📚 Vehicle History

Cadillac Legacy:

Cadillac has a long-standing reputation for luxury, comfort, and advanced technology in American automobiles.

Seville Lineage:

The Seville was Cadillac's flagship personal luxury sedan, evolving from rear-wheel drive to front-wheel drive with the introduction of the K-body platform.

Sts Positioning:

The STS (Seville Touring Sedan) variant emphasized performance and sportier handling compared to the base Seville.

Production Period:

1998-2004 (This generation)

Manufacturing Location:

Hamtramck, Michigan, USA (Detroit/Hamtramck Assembly Plant)

🏆 Awards & Recognition

Car And Driver 10 Best:

The Seville, particularly the STS, was often recognized for its comfort and performance by automotive publications like Car and Driver.

Ward 10 Best Engines:

The Northstar V8 engine received recognition in Ward's 10 Best Engines lists for its power and smoothness during its development period.