🏷️ Basic Information

Make:

Cadillac

Model:

STS

Year:

2008

👋 Introduction

Target Audience:

DIY enthusiasts, independent repair shops, and Cadillac owners seeking in-depth knowledge for maintenance and repair.

Advantage:

Provides vehicle-specific, factory-level information identical to that used by dealership technicians, offering superior accuracy and detail compared to generic manuals.

Format Advantage:

Single, easy-to-use PDF manual format eliminates the need to flip through multiple books; searchable content for quick information retrieval.

Digital Convenience:

No more greasy or torn paper manuals; easily stored on PC, with ability to print specific pages as needed.

Cost Savings:

Enables owners to perform routine maintenance and repairs themselves, leading to significant cost savings compared to dealership labor rates.

📋 Manual Details

Product Name:

2008 Cadillac STS Service and Repair Manual

Description:

Covers all models and all repairs A-Z for the 2008 Cadillac STS.

Estimated Page Count:

Extensive (typically 2000+ pages for full factory service manuals)

Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

Digital PDF

📖 Manual Coverage

Engine:

Detailed coverage including internal components, timing, lubrication, cooling, and engine management.

Control System:

Comprehensive diagnostics and repair for engine control modules (ECM), powertrain control modules (PCM), and related sensors.

Mechanical:

Covers all major mechanical systems, including chassis, body, and driveline components.

Fuel Service Specifications:

Fuel pressure specifications, injector testing, fuel pump diagnosis, and related system maintenance.

Emission Control:

Diagnosis and repair of emissions-related components, including catalytic converters, O2 sensors, and EVAP systems.

Intake Exhaust Cooling:

Detailed procedures for intake manifold service, exhaust system repair, and cooling system maintenance including radiator, water pump, and thermostat.

Lube:

Lubrication points, fluid type specifications, and service procedures for various vehicle components.

Ignition Starting Charging:

Covers ignition system components, starter motor, alternator, battery service, and related diagnostics.

Auto Transmission:

Complete service and repair for the automatic transmission, including fluid changes, filter replacement, internal component diagnosis, and control systems.

Manual Transmission:

If equipped, coverage for manual transmission service, clutch replacement, and related components.

Transfer Propeller Shaft:

Service and repair for the driveshaft, U-joints, and transfer case (if applicable to AWD models).

Drive Shaft:

Diagnosis and repair of drive axles, CV joints, and related components.

Differential:

Service and repair for front and rear differentials, including fluid changes and internal component checks.

Axle Suspension:

Detailed coverage of front and rear suspension systems, including shock absorbers, struts, control arms, bushings, and wheel alignment specifications.

Tire Wheel:

Wheel specifications, tire pressure monitoring system (TPMS) service, and tire/wheel balance procedures.

Brake Control:

Diagnosis and repair of ABS (Anti-lock Braking System), traction control, and stability control systems.

Brake:

Complete brake system service, including pads, rotors, calipers, brake fluid replacement, and bleeding procedures.

Parking Brake:

Service and adjustment of the parking brake system.

Steering Column:

Service and repair for steering column components, including tilt and telescoping mechanisms.

Power Steering:

Diagnosis and repair of the power steering system, including pump, rack and pinion, and fluid.

Air Condition:

Complete HVAC (Heating, Ventilation, and Air Conditioning) system service, including refrigerant handling, compressor, evaporator, and heater core.

Suppl Restraint System:

Detailed coverage of the SRS (Supplemental Restraint System), including airbags, impact sensors, and control modules.

Seat Belt:

Service and replacement of seat belt mechanisms and pretensioners.

Engine Immobilizer:

Diagnosis and troubleshooting of the vehicle's anti-theft and immobilizer system.

Cruise Control:

Service and diagnosis of the adaptive cruise control system and standard cruise control functions.

Wiper Washer:

Service and repair for windshield wipers and washer systems.

Door Lock:

Service and repair for power door locks, keyless entry, and remote functions.

Meter Audio Visual:

Diagnosis and repair of instrument cluster, infotainment system, audio components, and visual displays.

Horn:

Service and repair of the horn system.

Windshield Glass Mirror:

Procedures for windshield replacement, glass repair, and mirror adjustments/replacement.

Instrument Panel:

Removal, installation, and diagnosis of the instrument panel and associated components.

Seat:

Service and repair for power seats, seat heaters, and manual seat adjustments.

Engine Hood Door:

Service and adjustment for hood latches, hinges, and door mechanisms.

Exterior Interior:

Coverage for body panels, trim, lighting, interior trim components, and upholstery.

Electrical:

Comprehensive electrical system troubleshooting, including wiring diagrams, component testing, and power distribution.

Multiplex Can Communication:

Diagnosis and troubleshooting of the vehicle's multiplexed network and CAN (Controller Area Network) communication systems.

Maintenance:

Routine maintenance procedures, fluid changes, filter replacements, and inspection schedules.

Diagnostics:

Troubleshooting guides, diagnostic trouble codes (DTCs) explanations, and systematic diagnostic approaches.

Repair:

Step-by-step instructions for repairing and replacing all major components and systems.

Installation:

Procedures for the installation and removal of various parts and accessories.

Wiring Schematics:

Detailed wiring diagrams for all electrical systems, crucial for accurate diagnosis and repair.

Illustrations Diagrams:

Numerous illustrations, diagrams, and exploded views to aid in understanding component locations and assembly/disassembly procedures.

Depth:

Factory-level detailed. Covers basic maintenance to complex component rebuilds and advanced electronic diagnostics.

📊 Manual Specifications

Format:

PDF

Compatibility:

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

Requirements:

Adobe PDF Reader and Winzip (free online).

Printability:

All pages are printable, allowing users to print specific sections or the entire manual.

Image Enhancement:

Ability to blow up images for enlarged copies.

Binding:

N/A (Digital PDF format - no physical binding)

Paper Type:

N/A (Digital PDF format - no physical paper)

⚙️ Engine Specifications

Engine Options:

Likely available with the 3.6L V6 VVT and the 4.6L V8 Northstar engine for the 2008 model year. Manual will cover both if applicable.

3.6L V6 Performance:

Approx. 275-302 hp, 265-272 lb-ft torque (specifics depend on exact tuning).

4.6L V8 Performance:

Approx. 320 hp, 315 lb-ft torque (specifics depend on exact tuning).

Fuel Delivery:

Port Fuel Injection (PFI) or Direct Injection (DI) depending on engine variant.

🔧 Transmission

Automatic Transmission:

Likely the Hydra-Matic 6-speed automatic transmission (e.g., 6L80) for both engine variants.

Manual Transmission Option:

Manual transmission was not a factory option for the 2008 Cadillac STS.

Transmission Features:

Driver Shift Control (manual shifting mode), electronic paddle shifters (optional on some trims).

📐 Dimensions

Wheelbase:

116.4 inches

Overall Length:

199.6 inches

Overall Width:

72.9 inches

Overall Height:

57.3 inches

Curb Weight:

Approx. 3,900 - 4,100 lbs (depending on engine and drivetrain)

🛡️ Safety Features

NHTSA Front Impact:

5-Star (as per NHTSA testing for similar models of that era)

NHTSA Side Impact:

5-Star (as per NHTSA testing for similar models of that era)

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Standard Traction Control System (TCS)

Stability Control:

Standard StabiliTrak Electronic Stability Control

Adaptive Cruise Control:

Optional Adaptive Cruise Control (ACC)

Airbags:

Frontal, side-impact, and curtain airbags standard.

Seat Belts:

3-point seat belts with pretensioners and load limiters.

💡 Technology Features

Infotainment System:

Cadillac's integrated infotainment system, likely featuring a touch-screen display, navigation (optional), and premium audio systems (e.g., Bose).

Parking Assist:

Optional rear parking assist sensors.

Headlights:

Optional Adaptive Forward Lighting (AFL) system which swivels headlights in corners.

Bluetooth:

Optional Bluetooth connectivity for hands-free calling.

🔧 Maintenance

Oil Change Interval:

Typically every 7,500 miles or 12 months, whichever comes first, using synthetic oil. Refer to manual for specific engine oil recommendations.

Transmission Fluid Change:

Recommended every 60,000 miles for severe service or as per the vehicle's maintenance schedule, especially for the 6-speed automatic.

Engine Oil Type:

Likely Dexos 1 or equivalent synthetic 5W-30 or 0W-30, depending on engine and climate. Check manual for exact specification.

Coolant Type:

Dex-Cool (orange long-life coolant), silicate-free.

Brake Fluid Type:

DOT 3 or DOT 4.

Transmission Fluid Type:

Dexron VI (for 6-speed automatic).

Engine Vibrations:

Some V8 Northstar engines of this era could experience issues with head gaskets or coolant leaks if not properly maintained.

Suspension Components:

Wear on control arm bushings, ball joints, and strut mounts can occur over time due to the vehicle's weight and performance.

Electronic Modules:

As with many luxury vehicles of this period, occasional issues with electronic control modules and sensors can arise.

📚 Vehicle History

Cadillac Legacy:

Cadillac, a luxury division of General Motors, has a long-standing reputation for producing upscale, comfortable, and powerful vehicles with advanced technology for their time.

Sts Lineage:

The STS (Seville Touring Sedan) replaced the front-wheel-drive Seville and was based on GM's rear-wheel-drive Sigma platform, aligning it with performance-oriented luxury sedans. The 2008 model is part of the second generation.

Manufacturing Location:

Lansing Grand River Assembly Plant, Lansing, Michigan, USA.

🏆 Awards & Recognition

Model Recognition:

While specific awards for the 2008 model year are best found in automotive reviews of the time, the STS was positioned as a competitor to established luxury sedans and received generally positive reviews for its ride comfort, handling (especially with AWD), and interior amenities.