🏷️ Basic Information Identification Make: Cadillac Model: STS Year: 2012 Product Name: 2012 Cadillac STS Service and Repair Manual Generation Generation: Second Generation (Second Facelift) Codes Platform: GM Sigma II 👋 Introduction Market Position Segment: Luxury Sedan Competitive Analysis Competitors: BMW 5 Series, Mercedes-Benz E-Class, Audi A6, Lexus GS, Infiniti M. Key Features Manual Value Proposition: Provides OEM-level technical data, diagnostics, and repair procedures, enabling owners and independent technicians to perform maintenance and repairs accurately and efficiently. Emphasizes vehicle-specific information over generic guides. Manual Format Advantage: Single, searchable PDF format eliminates the need to navigate multiple physical manuals. Allows for keyword searching, easy printing of specific sections, and digital storage. 📋 Manual Details Coverage Areas Coverage Scope: All models and all repairs A-Z for the 2012 Cadillac STS. Page Count Estimated Page Count: Estimated 2000+ pages (based on typical factory service manual volume for this class of vehicle and scope). Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: PDF Compatibility Operating Systems: Compatible with Windows Vista (32-bit and 64-bit), XP, ME, 98, NT, 2000, and macOS. Requirements Software Requirements: Adobe PDF Reader, Winzip (or equivalent decompression utility). 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, engine control system, fuel service, emission control, intake, exhaust, cooling, lubrication, ignition, starting, charging, automatic transmission, manual transmission (if applicable to specific sub-models), transfer case (if applicable), drive shaft, differential, axles, suspension. Chassis: Brake control, brake systems, parking brake, steering column, power steering, wheels, tires. Electrical: Air conditioning, supplemental restraint system (SRS), seat belts, engine immobilizer, cruise control, wiper and washer systems, door locks, instrumentation, audio/visual systems, horn, windshield/glass/mirrors, exterior and interior lighting, body electrical, multiplex/CAN communication, body control module (BCM), powertrain control module (PCM), chassis control module (CCM). Body And Frame: Body panel removal and installation, door mechanisms, hood and trunk latches, interior trim, glass replacement, weatherstripping. Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, inspections. Diagnosis: Troubleshooting guides, diagnostic trouble codes (DTCs), diagnostic procedures, circuit diagrams, component testing. Repair: Step-by-step repair instructions for all major components and systems, including disassembly, assembly, adjustments, and calibration. Engine Repair: Engine overhaul, cylinder head removal and installation, piston and connecting rod installation, crankshaft installation, valve timing adjustment. Transmission Repair: Automatic transmission fluid and filter change, solenoid testing and replacement, torque converter replacement, basic transmission diagnosis. Brake System Repair: Brake pad and rotor replacement, brake caliper service, brake fluid flush, ABS component testing and replacement. Suspension And Steering Repair: Ball joint replacement, control arm bushing replacement, shock absorber and strut replacement, power steering pump and rack replacement, alignment specifications. HVAC Repair: Air conditioning system service, refrigerant handling, blower motor replacement, climate control module diagnosis, heater core replacement. Srs System Diagnosis: Airbag module replacement, seat belt pretensioner replacement, occupant classification system (OCS) diagnosis, SRS warning light troubleshooting. Technical Depth Depth: Factory-level detail, covering from basic maintenance to advanced diagnostics and complete component rebuilds. Includes wiring schematics, component locations, torque specifications, and special tool requirements. Wiring Schematics Detail: Comprehensive wiring diagrams for all electrical systems, including component identification, wire colors, connectors, and fuse/relay locations. Diagnostic Tools Reference: References to GM's diagnostic equipment (e.g., Tech 2, GDS 2) and specific diagnostic procedures for various control modules. 📊 Manual Specifications File Format Digital Format: PDF Print Quality Printability: Fully printable, allowing users to print specific pages or sections as needed. Images can be enlarged for better clarity. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Quality: N/A (Digital PDF, user-printable) ⚙️ Engine Specifications Primary Engine Engine Option 1: 3.6L V6 (LLT VVT Direct Injection) Performance Horsepower 3.6L V6: 302 hp @ 6300 rpm Torque 3.6L V6: 272 lb-ft @ 4800 rpm Horsepower 4.6L V8: 320 hp @ 6400 rpm (estimated for earlier models) Torque 4.6L V8: 290 lb-ft @ 4400 rpm (estimated for earlier models) Fuel System Fuel Delivery 3.6L V6: Direct Injection Engine Option 2 Engine Option 2: 4.6L V8 (L37 Northstar - less common for 2012, primarily phased out) 🔧 Transmission Standard Transmission Type 3.6L: 6-speed automatic (Hydra-Matic 6L50) Optional Transmission Type AWD: All-wheel drive (AWD) available with 6-speed automatic Features Transmission Features: Driver Shift Control (manual shifting capability), specific torque converter lock-up ranges, adaptive shift logic. 📐 Dimensions Exterior Length: 199.7 inches Width: 72.5 inches Height: 58.3 inches Wheelbase: 113.9 inches Weights Curb Weight Rwd: Approx. 3,850 lbs (3.6L V6) Curb Weight AWD: Approx. 3,950 lbs (3.6L V6) 🛡️ Safety Features Ratings NHTSA Overall Rating: Not explicitly rated for 2012, but previous models performed well in crash tests. Active Features Active Safety Systems: Anti-lock Braking System (ABS), Electronic Stability Control (ESC - StabiliTrak), Traction Control System (TCS), Tire Pressure Monitoring System (TPMS), optional Magnetic Ride Control (MRC). Passive Features Airbags: Frontal airbags (driver and passenger), side-impact airbags (front and rear), roof rail airbags. Seat Belts: 3-point seat belts with pretensioners and...
BMW 5 Series, Mercedes-Benz E-Class, Audi A6, Lexus GS, Infiniti M.
Key Features
Manual Value Proposition:
Provides OEM-level technical data, diagnostics, and repair procedures, enabling owners and independent technicians to perform maintenance and repairs accurately and efficiently. Emphasizes vehicle-specific information over generic guides.
Manual Format Advantage:
Single, searchable PDF format eliminates the need to navigate multiple physical manuals. Allows for keyword searching, easy printing of specific sections, and digital storage.
📋 Manual Details
Coverage Areas
Coverage Scope:
All models and all repairs A-Z for the 2012 Cadillac STS.
Page Count
Estimated Page Count:
Estimated 2000+ pages (based on typical factory service manual volume for this class of vehicle and scope).
Manual Type
Type:
Factory Service Manual / Repair Manual
Language
Language:
English
Format
Format:
PDF
Compatibility
Operating Systems:
Compatible with Windows Vista (32-bit and 64-bit), XP, ME, 98, NT, 2000, and macOS.
Requirements
Software Requirements:
Adobe PDF Reader, Winzip (or equivalent decompression utility).
📖 Manual Coverage
Systems Covered
Powertrain:
Engine mechanical, engine control system, fuel service, emission control, intake, exhaust, cooling, lubrication, ignition, starting, charging, automatic transmission, manual transmission (if applicable to specific sub-models), transfer case (if applicable), drive shaft, differential, axles, suspension.
Air conditioning, supplemental restraint system (SRS), seat belts, engine immobilizer, cruise control, wiper and washer systems, door locks, instrumentation, audio/visual systems, horn, windshield/glass/mirrors, exterior and interior lighting, body electrical, multiplex/CAN communication, body control module (BCM), powertrain control module (PCM), chassis control module (CCM).
Body And Frame:
Body panel removal and installation, door mechanisms, hood and trunk latches, interior trim, glass replacement, weatherstripping.
Step-by-step repair instructions for all major components and systems, including disassembly, assembly, adjustments, and calibration.
Engine Repair:
Engine overhaul, cylinder head removal and installation, piston and connecting rod installation, crankshaft installation, valve timing adjustment.
Transmission Repair:
Automatic transmission fluid and filter change, solenoid testing and replacement, torque converter replacement, basic transmission diagnosis.
Brake System Repair:
Brake pad and rotor replacement, brake caliper service, brake fluid flush, ABS component testing and replacement.
Suspension And Steering Repair:
Ball joint replacement, control arm bushing replacement, shock absorber and strut replacement, power steering pump and rack replacement, alignment specifications.
HVAC Repair:
Air conditioning system service, refrigerant handling, blower motor replacement, climate control module diagnosis, heater core replacement.
Srs System Diagnosis:
Airbag module replacement, seat belt pretensioner replacement, occupant classification system (OCS) diagnosis, SRS warning light troubleshooting.
Technical Depth
Depth:
Factory-level detail, covering from basic maintenance to advanced diagnostics and complete component rebuilds. Includes wiring schematics, component locations, torque specifications, and special tool requirements.
Wiring Schematics Detail:
Comprehensive wiring diagrams for all electrical systems, including component identification, wire colors, connectors, and fuse/relay locations.
Diagnostic Tools Reference:
References to GM's diagnostic equipment (e.g., Tech 2, GDS 2) and specific diagnostic procedures for various control modules.
📊 Manual Specifications
File Format
Digital Format:
PDF
Print Quality
Printability:
Fully printable, allowing users to print specific pages or sections as needed. Images can be enlarged for better clarity.
Binding Type
Binding:
N/A (Digital PDF)
Paper Type
Paper Quality:
N/A (Digital PDF, user-printable)
⚙️ Engine Specifications
Primary Engine
Engine Option 1:
3.6L V6 (LLT VVT Direct Injection)
Performance
Horsepower 3.6L V6:
302 hp @ 6300 rpm
Torque 3.6L V6:
272 lb-ft @ 4800 rpm
Horsepower 4.6L V8:
320 hp @ 6400 rpm (estimated for earlier models)
Torque 4.6L V8:
290 lb-ft @ 4400 rpm (estimated for earlier models)
Fuel System
Fuel Delivery 3.6L V6:
Direct Injection
Engine Option 2
Engine Option 2:
4.6L V8 (L37 Northstar - less common for 2012, primarily phased out)
🔧 Transmission
Standard
Transmission Type 3.6L:
6-speed automatic (Hydra-Matic 6L50)
Optional
Transmission Type AWD:
All-wheel drive (AWD) available with 6-speed automatic
Features
Transmission Features:
Driver Shift Control (manual shifting capability), specific torque converter lock-up ranges, adaptive shift logic.
📐 Dimensions
Exterior
Length:
199.7 inches
Width:
72.5 inches
Height:
58.3 inches
Wheelbase:
113.9 inches
Weights
Curb Weight Rwd:
Approx. 3,850 lbs (3.6L V6)
Curb Weight AWD:
Approx. 3,950 lbs (3.6L V6)
🛡️ Safety Features
Ratings
NHTSA Overall Rating:
Not explicitly rated for 2012, but previous models performed well in crash tests.
Active Features
Active Safety Systems:
Anti-lock Braking System (ABS), Electronic Stability Control (ESC - StabiliTrak), Traction Control System (TCS), Tire Pressure Monitoring System (TPMS), optional Magnetic Ride Control (MRC).
Passive Features
Airbags:
Frontal airbags (driver and passenger), side-impact airbags (front and rear), roof rail airbags.
Seat Belts:
3-point seat belts with pretensioners and load limiters.
💡 Technology Features
Infotainment
Infotainment System:
Available Cadillac User Experience (CUE) system (though the 2012 model typically features the earlier generation infotainment with navigation, touch screen, and Bose premium audio).
Bluetooth for hands-free calling and audio streaming, USB and auxiliary input for audio devices.
Convenience
Keyless Access:
Keyless Access and Push-Button Start.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically every 7,500 miles or 12 months, whichever comes first, with synthetic oil. Refer to the manual for specific oil life monitoring system guidance.
Tire Rotation Interval:
Every 7,500 miles.
Coolant Flush Interval:
Initial service at 150,000 miles, then every 75,000 miles or as indicated by the Dex-Cool monitoring system.
Fluid Specifications
Engine Oil Type:
SAE 5W-30 Full Synthetic (GM dexos1™ compliant).
Coolant Type:
GM P/N 12346290 (Orange) or equivalent Dex-Cool® compatible coolant.
Transmission Fluid Type:
Dexron VI Automatic Transmission Fluid.
Brake Fluid Type:
DOT 3 or DOT 4 (refer to reservoir cap for specific recommendation).
Power Steering Fluid Type:
GM P/N 89021184 or equivalent power steering fluid.
Known Issues
Common Wear Items:
Suspension components (bushings, control arms), ignition coils, fuel injectors (especially on early direct injection models), power steering hoses, and transmission solenoids can be prone to wear over time.
Electrical Gremlins:
Some owners have reported minor electrical issues related to sensors or modules, often resolvable with software updates or component replacement. Water pump leaks on the 3.6L V6 (LLT) are also a known concern, often requiring replacement.
📚 Vehicle History
Brand Heritage
Brand Legacy:
Cadillac, GM's luxury division, known for performance, comfort, and technological innovation.
Model Evolution
Sts Lineage:
Successor to the Cadillac Seville, the STS (Seville Touring Sedan) was introduced in 2005 on the rear-wheel-drive Sigma platform, evolving into the more modern Sigma II platform for the second generation. The 2012 model represents the final facelift of this generation before its discontinuation.
Production
Production Location:
Lansing Grand River Assembly, Lansing, Michigan, USA.
Production Years:
2005-2011 (Model Years)
🏆 Awards & Recognition
Recognitions
Past Awards:
While specific 2012 awards may be limited, the Cadillac STS has historically received praise for its comfortable ride, powerful engines, and advanced features for its class.
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