🏷️ Basic Information

Make:

Cadillac

Model:

STS

Year:

2007

Chassis Code:

GMT909

👋 Introduction

Positioning:

The Cadillac STS (Seville Touring Sedan) was positioned as a luxury performance sedan, competing with established European and Japanese rivals in the mid-size luxury segment. It aimed to blend American comfort and power with European driving dynamics.

Competitors:

Primary competitors included the BMW 5 Series, Mercedes-Benz E-Class, Audi A6, Lexus GS, and Acura RL. The STS sought to differentiate itself with a distinctive American luxury aesthetic and powerful V8 engine options.

Features:

Rear-wheel drive platform with optional all-wheel drive, available V6 and V8 engines, Magnetic Ride Control adaptive suspension, advanced infotainment and safety features, spacious and luxurious interior.

📋 Manual Details

Coverage:

All models, engines, trim levels, and transmission types for the 2007 Cadillac STS.

Pages:

N/A (Downloadable, estimated 2000+ pages based on typical workshop manuals of this scope)

Type:

Complete Workshop Service and Repair Manual

Language:

English

Format:

Digital Download (PDF)

📖 Manual Coverage

Systems:

Engine mechanical, engine performance, fuel system, cooling system, lubrication system, exhaust system, ignition system, starting system, charging system, transmission (automatic), drivetrain, braking system (ABS, StabiliTrak), steering system, suspension system (front and rear), HVAC system, body control modules, lighting systems, power accessories (windows, locks, seats, mirrors), airbags, security system, diagnostic procedures, wiring diagrams, and more.

Procedures:

Routine maintenance, scheduled servicing, troubleshooting, diagnostic fault finding, component removal and installation, repair procedures, overhaul instructions, adjustments, specifications, torque values, wiring diagrams, schematics, and special tool recommendations.

Depth:

Comprehensive, covering basic maintenance to in-depth engine and transmission rebuilds, electrical system diagnostics, and bodywork repairs. Suitable for professional technicians and advanced DIY enthusiasts.

📊 Manual Specifications

Format:

PDF

Quality:

High resolution, printable pages with clear text and legible diagrams/illustrations.

Binding:

N/A (Digital Download - Print as needed)

Paper:

N/A (Digital Download - Printer paper dependent)

⚙️ Engine Specifications

Engine 1:

3.6L V6 (LF3), 255 hp @ 6200 rpm, 252 lb-ft torque @ 4400 rpm. Features include DOHC, VVT, direct injection (DI) starting with 2007 models.

Engine 2:

4.6L V8 (Northstar L37), 320 hp @ 6400 rpm, 315 lb-ft torque @ 4400 rpm. Features include DOHC, 32 valves, variable valve timing (VVT).

Horsepower Range:

255 - 320 hp

Torque Range:

252 - 315 lb-ft

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI) for V6; Direct Injection (DI) for 3.6L V6 (LF3). Multi-Port Fuel Injection (MPI) for 4.6L V8 (L37).

🔧 Transmission

Transmission Type:

6-speed automatic transmission (e.g., 6L80/6L80-e)

Drive Type:

All-Wheel Drive (AWD) available on some models/engine configurations.

Transmission Features:

Driver Shift Control manual mode for driver-selectable gear changes, electronic stability control integration.

📐 Dimensions

Wheelbase:

113.4 inches (2880 mm)

Length:

199.4 inches (5065 mm)

Width:

72.5 inches (1841 mm)

Height:

57.3 inches (1455 mm)

Trunk Capacity:

15.4 cubic feet (436 L)

Curb Weight Range:

Approx. 3,800 - 4,100 lbs (1724 - 1860 kg), depending on engine and drivetrain.

🛡️ Safety Features

NHTSA Front Crash:

5-Star (Driver and Passenger)

NHTSA Side Crash:

5-Star (Front and Rear Passengers)

IIHS Top Safety Pick:

Yes (for models with optional side airbags)

Stability Control:

Standard StabiliTrak electronic stability control, traction control.

Brakes:

Four-wheel disc brakes with ABS, Electronic Brake-force Distribution (EBD), Brake Assist (BA).

Headlights:

Standard HID (High-Intensity Discharge) projector-beam headlamps with adaptive forward lighting (AFS) on some trims.

Airbags:

Dual-stage frontal airbags, front side-impact airbags, full-length side curtain airbags, available rear-seat side airbags.

Restraints:

Active head restraints for front seats.

💡 Technology Features

Infotainment System:

Cadillac Bose premium audio system, available DVD navigation with touch screen, Bluetooth connectivity.

Adaptive Cruise Control:

Available adaptive cruise control system.

Parking Assist:

Available rear parking assist sensors.

Connectivity Options:

OnStar communication system (subscription required), Bluetooth hands-free calling.

Magnetic Ride Control:

Real-time damping system that adjusts suspension stiffness based on road conditions and driving style for improved ride and handling.

🔧 Maintenance

Oil Change Interval:

Every 5,000 - 7,500 miles (8,000 - 12,000 km) or 6-12 months, depending on driving conditions and oil type used. Refer to oil life monitoring system.

Tire Rotation:

Every 7,500 miles (12,000 km) or as recommended by the oil life monitoring system.

Spark Plugs:

Approx. 100,000 miles (160,000 km) for platinum or iridium tipped plugs. Refer to specific engine recommendation.

Engine Oil Type:

SAE 5W-30 (API SM or higher service category). For V8, consult specific viscosity recommendations. Synthetic oil is highly recommended.

Transmission Fluid Type:

Dexron VI Automatic Transmission Fluid (ATF).

Coolant Type:

Dex-Cool (Orange colored, Extended Life Antifreeze/Coolant, 50/50 mix with distilled water).

Brake Fluid Type:

DOT 3 or DOT 4.

Common Problems:

Early models had reports of fuel system issues (e.g., pump, injectors), suspension component wear (e.g., control arms, bushings), and potential electronic module failures. Magnetic Ride Control sensors and actuators can also be a source of issues. Some Northstar V8 engines from earlier generations had known head gasket issues, but this was largely addressed in the L37 variant. Water pump leaks can also occur. Variable valve timing (VVT) systems can sometimes develop noise or performance issues.

Engine Oil Capacity:

3.6L V6: Approx. 5.5 quarts (5.2 L); 4.6L V8: Approx. 4.5 quarts (4.3 L). Always verify with dipstick.

Coolant Capacity:

Approx. 11.3 quarts (10.7 L) for V6, 12.6 quarts (11.9 L) for V8. Check owner's manual for exact capacity.

📚 Vehicle History

Heritage:

Cadillac, founded in 1902, is one of America's oldest luxury automotive brands. Known for pioneering technologies like the electric starter, enclosed body, and V8 engine, Cadillac has a long history of innovation and luxury.

Sts Predecessors:

The STS succeeded the Cadillac Seville. The STS nameplate itself was revived for the 2005 model year, representing Cadillac's renewed focus on performance and luxury, built on the GM Sigma rear-wheel-drive platform.

Manufacturing Location:

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

Production Years:

2005-2011

🏆 Awards & Recognition

Awards:

While specific major awards for the 2007 model year are not widely publicized, the STS generally received positive reviews for its comfortable ride, quiet cabin, and powerful engine options, particularly the V8. It was often praised for offering a strong value proposition against its European competitors.