🏷️ Basic Information

Make:

Cadillac

Model:

STS

Year:

2007

Sts Generation:

Second Generation (2005-2011)

Platform:

GM Sigma

👋 Introduction

Market Position:

The Cadillac STS was positioned as a luxury sport sedan, competing with established German and Japanese marques in the premium segment.

Competitive Analysis:

Competed directly with vehicles such as the BMW 5 Series, Mercedes-Benz E-Class, Audi A6, and Lexus GS.

Key Features:

Rear-wheel drive or all-wheel drive, advanced chassis technology, potent V6 and V8 engine options, luxurious interior appointments, and sophisticated technology integration.

📋 Manual Details

Coverage Areas:

All Models & All Repairs A-Z

Page Count:

Not Specified (implied comprehensive)

Manual Type:

Factory Service and Repair Manual

Language:

English

Format:

PDF

Accessibility Requirements:

Requires Adobe PDF Reader and Winzip (both free)

Operating System Compatibility:

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

📖 Manual Coverage

Systems Covered:

Maintenance, Engine, Control System, Mechanical, Fuel Service Specifications, Emission Control, Intake Exhaust Cooling, Lube, Ignition Starting Charging, Auto Transmission, Clutch, Manual Transmission, Transfer Propeller Shaft, Drive Shaft, Differential, Axle Suspension, Tire & Wheel, Brake Control, Brake, Parking Brake, Steering Column, Power Steering, Air Condition, Suppl Restraint System, Seat Belt, Engine Immobilizer, Cruise Control, Wiper & Washer, Door Lock, Meter Audio/Visual, Horn, Windshield/Glass Mirror, Instrument Panel, Seat, Engine Hood/ Door, Exterior & Interior, Electrical, Multiplex/CAN Communication, and more.

Engine Management System Coverage:

Detailed diagnostics, repair procedures, and specifications for engine control module (ECM), sensors, actuators, and emissions systems.

Drivetrain Coverage:

Comprehensive coverage of front and rear differentials, drive shafts, axles, AWD system components, and related maintenance.

Body And Interior Coverage:

Detailed procedures for body panel removal and installation, interior trim, seats, door mechanisms, and glass replacement.

Safety Restraint System Coverage:

Detailed procedures for airbag system diagnosis, SRS module replacement, seat belt repair and replacement.

Body And Chassis Coverage:

Includes frame repair, body panel alignment, door and latch mechanisms, exterior lighting, and trim components.

Procedures Included:

Step-by-step instructions, diagnostics, maintenance, servicing, repair, troubleshooting, wiring schematics, illustrations, diagrams.

Brake System Repair Procedures:

Front and rear brake pad and rotor replacement, caliper service, brake fluid flush and bleeding, ABS system diagnostics.

Suspension And Steering Repair Procedures:

Front and rear suspension component replacement (ball joints, control arms, struts, shocks), power steering system diagnosis and repair, wheel alignment specifications.

Electrical System Diagnostics:

Extensive wiring schematics for all vehicle systems, component testing procedures, diagnostic trouble code (DTC) interpretation and resolution.

Technical Depth:

Factory-level detail, enabling complete repair and servicing.

Diagnostic Procedures Depth:

Advanced diagnostic trees, component resistance and voltage specifications, waveform analysis guidance.

Rebuild Procedures:

Detailed instructions for engine and transmission disassembly, inspection, and reassembly, including torque specifications and clearances.

📊 Manual Specifications

File Format:

PDF

Print Quality:

High-resolution, printable pages with zoomable images and diagrams.

Binding Type:

Digital (PDF) - no physical binding

Paper Type:

N/A (Digital)

⚙️ Engine Specifications

Primary Engine Options:

3.6L V6 (LLT, later direct-injected), 4.6L V8 (Northstar NHP)

Engine Performance V6:

Approx. 255-302 hp, 253-264 lb-ft torque (depending on variant)

Engine Performance V8:

Approx. 320 hp, 315 lb-ft torque

Fuel System Type:

Multi-point fuel injection (MPI) or direct injection (DI) for 3.6L LLT

Engine Codes V6:

RPO: LNJ (3.6L DI V6), RPO: LY7 (3.6L MPI V6 - early models)

Engine Codes V8:

RPO: NHP (4.6L V8 Northstar)

🔧 Transmission

Standard Transmission:

6-speed automatic (GM 6L80 or 6L50)

Optional Transmission:

Not Applicable for this model year, only automatic

Transmission Features:

Driver Shift Control (manual shifting mode), optional AWD integration

📐 Dimensions

Wheelbase:

115.4 inches

Length:

199.6 inches

Width:

72.5 inches

Height:

57.9 inches

Curb Weight:

Approx. 3,800 - 4,200 lbs (depending on engine and drivetrain)

Passenger Volume:

Approx. 101.4 cu ft

Trunk Capacity:

Approx. 15.3 cu ft

🛡️ Safety Features

NHTSA Front Crash Test:

5-star (driver and passenger)

NHTSA Side Crash Test:

5-star (front), 5-star (rear)

IIHS Roof Strength:

Good

Active Safety Features:

ABS, Traction Control (StabiliTrak), Electronic Stability Control (ESC), Tire Pressure Monitoring System (TPMS), optional Adaptive Cruise Control

Passive Safety Features:

Dual-stage front airbags, front side-impact airbags, side curtain airbags, active head restraints

💡 Technology Features

Infotainment System:

Optional Cadillac Uconnect infotainment system with touch screen, navigation, voice recognition, and premium audio options (e.g., Bose).

Infotainment Features:

DVD-based or hard-drive based navigation, real-time traffic updates, climate control integration.

Driver Assistance Features:

Adaptive Cruise Control, front and rear park assist, rear vision camera (optional), Bi-Xenon HID headlights with cornering illumination.

Connectivity Options:

Bluetooth for hands-free calling (optional), auxiliary audio input.

🔧 Maintenance

Oil Change Interval:

7,500 miles or 12 months (using Dexos synthetic oil; consult manual for specific GM oil recommendations for this year)

Tire Rotation Interval:

7,500 miles

Coolant Flush Interval:

Every 5 years or 100,000 miles (initial fill is typically long-life coolant)

Engine Oil Specification:

SAE 5W-30 Synthetic (consult manual for precise GM specification such as dexos or earlier GM standards)

Transmission Fluid Type:

Dexron VI Automatic Transmission Fluid

Coolant Type:

GM P/N 12346290 (or equivalent orange long-life coolant)

Brake Fluid Type:

DOT 3

Power Steering Fluid Type:

GM Power Steering Fluid (or Dexron VI Automatic Transmission Fluid)

Common Issues V8 Northstar:

Head gasket failures (though less common in later iterations), oil leaks, intake manifold gasket leaks.

Common Issues General:

Suspension component wear (control arms, bushings), occasional HVAC system issues, electronic module glitches, power steering leaks.

Common Issues Transmission:

Occasional issues with torque converter shudder, transmission control module (TCM) glitches.

📚 Vehicle History

Brand Heritage:

Cadillac, founded in 1902, is known for its luxury vehicles and innovation, often pioneering features in the American automotive industry.

Sts Evolution:

The second-generation STS, introduced in 2005, marked a significant departure with its rear-wheel-drive platform (Sigma) and a more aggressive, modern design language, aiming to directly challenge European luxury sedans.

Sts Platform Significance:

The Sigma platform was a rear-wheel-drive architecture shared with other GM luxury brands like Saab (e.g., 9-5) and later Chevrolet (e.g., Camaro). It provided a more balanced chassis for improved handling.

Production Location:

Lansing Grand River Assembly Plant, Lansing, Michigan, USA