This comprehensive 1999 Cadillac Seville STS Service and Repair Manual provides detailed instructions, diagrams, and specifications for maintaining, servicing, diagnosing, and repairing your vehicle. It covers all models and all repair procedures, from basic maintenance to advanced troubleshooting.

This manual is the same one used by technicians at Cadillac dealerships, ensuring accuracy and reliability. Every step is clearly explained, making it easy to understand and follow, even for novice mechanics. You'll find detailed wiring schematics, illustrations, and comprehensive troubleshooting guides for all major systems, including:

* **Engine:** Detailed information on engine components, operation, maintenance, and repair procedures.
* **Control System:** Troubleshooting and repair information for the engine's electronic control systems.
* **Mechanical:** Detailed explanations and repair instructions for mechanical components like the transmission, suspension, and drivetrain.
* **Fuel Service Specifications:** Specifications and procedures for fuel system maintenance and repair.
* **Emission Control:** Information on emission control systems, troubleshooting, and repair.
* **Intake Exhaust Cooling:** Detailed instructions for maintaining and repairing your vehicle's cooling and exhaust systems.
* **Lube:** Lubrication schedules, specifications, and procedures for all components.
* **Ignition Starting Charging:** Comprehensive information on the ignition, starting, and charging systems, including troubleshooting and repair.
* **Auto Transmission Clutch:** Detailed instructions for maintaining and repairing your automatic transmission.
* **Manual Transmission:** Information on manual transmission operation, maintenance, and repair.
* **Transfer Propeller Shaft:** Specifications and repair procedures for the transfer case and driveshaft.
* **Drive Shaft:** Troubleshooting and repair instructions for the vehicle's drive shafts.
* **Differential:** Detailed information on differential operation, maintenance, and repair.
* **Axle Suspension:** Specifications and repair procedures for the suspension system.
* **Tire & Wheel:** Information on tire and wheel maintenance and repair.
* **Brake Control:** Troubleshooting and repair information for the brake system control unit.
* **Brake:** Detailed instructions for maintaining and repairing the brake system.
* **Parking Brake:** Specifications and repair procedures for the parking brake system.
* **Steering Column:** Troubleshooting and repair instructions for the steering column.
* **Power Steering:** Detailed information on power steering operation, maintenance, and repair.
* **Air Condition:** Information on air conditioning system operation, maintenance, and repair.
* **Suppl Restraint System:** Specifications and repair procedures for the vehicle's restraint systems.
* **Seat Belt:** Detailed information on seat belt operation and maintenance.
* **Engine Immobilizer:** Troubleshooting and repair instructions for the engine immobilizer system.
* **Cruise Control:** Information on cruise control operation, maintenance, and repair.
* **Wiper & Washer:** Specifications and repair procedures for the wiper and washer systems.
* **Door Lock:** Troubleshooting and repair instructions for the door locking system.
* **Meter Audio/Visual:** Information on the instrument panel and audio/visual systems.
* **Horn:** Specifications and repair procedures for the horn.
* **Windshield/Glass Mirror:** Troubleshooting and repair instructions for the windshield, glass, and mirrors.
* **Instrument Panel:** Detailed information on the instrument panel and its components.
* **Seat:** Specifications and repair procedures for the seats.
* **Engine Hood/ Door:** Troubleshooting and repair instructions for the engine hood and doors.
* **Exterior & Interior:** Comprehensive instructions for maintaining and repairing the vehicle's exterior and interior.
* **Electrical:** Detailed information on the electrical system, including wiring diagrams and troubleshooting guides.
* **Multiplex/ Can Communication:** Information on the vehicle's multiplex and CAN communication systems.

This manual provides all the information you need to confidently service and repair your 1999 Cadillac Seville STS. It's a valuable resource for both professional mechanics and do-it-yourself enthusiasts.

The 1999 Cadillac Seville STS, a luxurious sedan embodying the spirit of American automotive excellence, was a testament to the brand's commitment to style and performance. This iteration marked a significant evolution for the Seville lineup, boasting a refined exterior design with sharper lines and a more assertive stance. Under the hood, it housed a potent 4.6-liter Northstar V8 engine, producing a thrilling 275 horsepower and 300 lb-ft of torque. Paired with a smooth-shifting four-speed automatic transmission, the Seville STS offered a dynamic driving experience that blended power with elegance. Inside, the cabin exuded sophistication, featuring premium leather upholstery, rich wood trim, and advanced features like a Bose sound system and an optional navigation system.

The 1999 Cadillac Seville STS was a sophisticated machine that demanded a comprehensive approach to maintenance and repair. The accompanying 1999 Cadillac Seville STS Service and Repair Manual served as an indispensable guide for both professional technicians and dedicated car enthusiasts. This manual, a treasure trove of technical information, provided detailed instructions on every aspect of the Seville STS, from routine maintenance tasks like oil changes and filter replacements to more complex procedures like engine rebuilds and electrical system diagnostics. With its comprehensive coverage, clear diagrams, and step-by-step instructions, the manual enabled owners and mechanics to understand the vehicle's intricate systems and perform repairs confidently, ensuring the Seville STS remained in peak condition for years to come.