🏷️ Basic Information Identification Make: Cadillac Model: STS Year: 2007 Generation Sts Generation: Second Generation (2005-2011) Codes Platform: GM Sigma 👋 Introduction Market Position 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 Competitive Analysis: Competed directly with vehicles such as the BMW 5 Series, Mercedes-Benz E-Class, Audi A6, and Lexus GS. Key Features 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 Coverage Areas: All Models & All Repairs A-Z Page Count Page Count: Not Specified (implied comprehensive) Manual Type Manual Type: Factory Service and Repair Manual Language Language: English Format 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 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 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 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 File Format: PDF Print Quality Print Quality: High-resolution, printable pages with zoomable images and diagrams. Binding Type Binding Type: Digital (PDF) - no physical binding Paper Type Paper Type: N/A (Digital) ⚙️ Engine Specifications Primary Engine Primary Engine Options: 3.6L V6 (LLT, later direct-injected), 4.6L V8 (Northstar NHP) Performance 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 Fuel System Type: Multi-point fuel injection (MPI) or direct injection (DI) for 3.6L LLT Engine Codes 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 Standard Transmission: 6-speed automatic (GM 6L80 or 6L50) Optional Optional Transmission: Not Applicable for this model year, only automatic Features Transmission Features: Driver Shift Control (manual shifting mode), optional AWD integration 📐 Dimensions Exterior Wheelbase: 115.4 inches Length: 199.6 inches Width: 72.5 inches Height: 57.9 inches Weights Curb Weight: Approx. 3,800 - 4,200 lbs (depending on engine and drivetrain) Interior Passenger Volume: Approx. 101.4 cu ft Cargo Trunk Capacity: Approx. 15.3 cu ft 🛡️ Safety Features Ratings NHTSA Front Crash Test: 5-star (driver and passenger) NHTSA Side Crash Test: 5-star (front), 5-star (rear) IIHS Roof Strength: Good Active Features Active Safety Features: ABS, Traction Control (StabiliTrak), Electronic Stability Control (ESC), Tire Pressure Monitoring System (TPMS), optional Adaptive Cruise Control Passive Features Passive Safety Features: Dual-stage front airbags, front side-impact airbags, side curtain airbags, active head restraints 💡 Technology Features Infotainment 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 Driver Assistance Features: Adaptive Cruise Control, front and rear park assist, rear vision camera (optional), Bi-Xenon HID headlights with cornering illumination. Connectivity Connectivity Options: Bluetooth for hands-free calling (optional), auxiliary audio input. 🔧 Maintenance Service Intervals Oil Change Interval: 7,500 miles or 12 months (using Dexos synthetic oil; consult...
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
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
File Format:
PDF
Print Quality
Print Quality:
High-resolution, printable pages with zoomable images and diagrams.
Binding Type
Binding Type:
Digital (PDF) - no physical binding
Paper Type
Paper Type:
N/A (Digital)
⚙️ Engine Specifications
Primary Engine
Primary Engine Options:
3.6L V6 (LLT, later direct-injected), 4.6L V8 (Northstar NHP)
Performance
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
Fuel System Type:
Multi-point fuel injection (MPI) or direct injection (DI) for 3.6L LLT
Engine Codes
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
Standard Transmission:
6-speed automatic (GM 6L80 or 6L50)
Optional
Optional Transmission:
Not Applicable for this model year, only automatic
Features
Transmission Features:
Driver Shift Control (manual shifting mode), optional AWD integration
📐 Dimensions
Exterior
Wheelbase:
115.4 inches
Length:
199.6 inches
Width:
72.5 inches
Height:
57.9 inches
Weights
Curb Weight:
Approx. 3,800 - 4,200 lbs (depending on engine and drivetrain)
Interior
Passenger Volume:
Approx. 101.4 cu ft
Cargo
Trunk Capacity:
Approx. 15.3 cu ft
🛡️ Safety Features
Ratings
NHTSA Front Crash Test:
5-star (driver and passenger)
NHTSA Side Crash Test:
5-star (front), 5-star (rear)
IIHS Roof Strength:
Good
Active Features
Active Safety Features:
ABS, Traction Control (StabiliTrak), Electronic Stability Control (ESC), Tire Pressure Monitoring System (TPMS), optional Adaptive Cruise Control
Passive Features
Passive Safety Features:
Dual-stage front airbags, front side-impact airbags, side curtain airbags, active head restraints
💡 Technology Features
Infotainment
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
Driver Assistance Features:
Adaptive Cruise Control, front and rear park assist, rear vision camera (optional), Bi-Xenon HID headlights with cornering illumination.
Connectivity
Connectivity Options:
Bluetooth for hands-free calling (optional), auxiliary audio input.
🔧 Maintenance
Service Intervals
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)
Fluid Specifications
Engine Oil Specification:
SAE 5W-30 Synthetic (consult manual for precise GM specification such as dexos or earlier GM standards)
GM Power Steering Fluid (or Dexron VI Automatic Transmission Fluid)
Known Issues
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
Brand Heritage:
Cadillac, founded in 1902, is known for its luxury vehicles and innovation, often pioneering features in the American automotive industry.
Model Evolution
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
Production Location:
Lansing Grand River Assembly Plant, Lansing, Michigan, USA