🏷️ Basic Information

Make:

Cadillac

Model:

STS

Year:

2010

Engine Code Primary:

RPO codes will vary based on specific vehicle configuration (e.g., LNF for 2.0L Turbo, LY7 for 3.6L V6, LH2 for 4.6L V8)

👋 Introduction

Vehicle Segment:

Luxury Mid-size Sedan

Key Competitors:

BMW 5 Series, Mercedes-Benz E-Class, Audi A6, Lexus GS, Infiniti M35/M45.

Value Proposition:

Offers a blend of American luxury, potent engine options, advanced technology, and a comfortable ride. The 2010 model year saw refinements to styling and technology.

Benefit To Owner:

Empowers owners to perform maintenance and repairs themselves, saving time and money, and deepening their understanding of their vehicle. Provides dealership-level diagnostic and repair information.

📋 Manual Details

Primary Coverage:

2010 Cadillac STS - All Models & All Repairs A-Z

Estimated Page Count:

Extensive, typically ranging from 1500-3000+ pages for a complete factory service manual. Exact count not specified.

Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

PDF (Printable)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, disassembly, cylinder head, pistons, crankshaft, camshaft, timing systems, lubrication, cooling, fuel delivery, emissions control, engine mounts, sensors, actuators.

Engine Control System:

Engine Control Module (ECM) operation, diagnostic trouble codes (DTCs), fuel injection strategy, ignition timing, idle control, evaporative emission control, throttle body control.

Transmission Automatic:

Automatic transmission operation, disassembly, assembly, torque converter, valve body, solenoids, electronic controls, fluid service, seals, clutches, bands.

Transmission Manual:

If applicable to specific STS models, covers manual transmission operation, disassembly, assembly, clutch system, fluid service.

Drivetrain:

Driveshaft, propeller shaft, differential, axles, wheel bearings, CV joints, transfer case (if applicable).

Suspension Steering:

Front and rear suspension components, shock absorbers, struts, springs, control arms, ball joints, bushings, steering column, power steering system, rack and pinion, steering knuckles.

Brakes:

Brake system hydraulics, calipers, rotors, pads, ABS (Anti-lock Braking System), EBD (Electronic Brake-force Distribution), parking brake system, brake fluid specifications.

Electrical Power Management:

Battery, charging system (alternator), starting system (starter motor), wiring harnesses, fuses, relays, power distribution.

Lighting And Signals:

Headlights, taillights, turn signals, interior lighting, fog lights, bulb types and replacement.

Climate Control:

HVAC (Heating, Ventilation, and Air Conditioning) system, compressor, condenser, evaporator, refrigerant types, cabin air filter, climate control module, blower motor.

Restraint Systems:

Supplemental Restraint System (SRS) - airbags, seat belt pretensioners, SRS module, occupant detection systems, side curtain airbags.

Interior Appointments:

Seats, seat belts, seat adjustment mechanisms, door locks, interior trim panels, headliner, floor mats, instrument panel, dashboard, console.

Exterior Appointments:

Body panels, doors, hood, trunk lid, fenders, bumpers, mirrors, glass (windshield, side glass, rear glass), seals, exterior trim.

Body And Chassis:

Frame structure, body components, rust prevention, underbody coatings, sound deadening.

Multiplex Communication:

CAN (Controller Area Network) communication, data bus diagnostics, module communication, multiplexing systems.

Driver Information And Controls:

Instrument cluster, gauges, warning lights, telltales, driver information center, cruise control, steering wheel controls.

Audio Visual And Navigation:

Infotainment system, radio, speakers, navigation system, display screens, connectivity features.

Wiper Washer:

Windshield wipers, washer system, fluid reservoir, pump, wiper motor, linkages.

Tire Wheel:

Tire pressure monitoring system (TPMS), wheel specifications, tire sizes, lug nut torque specifications.

Diagnostics:

Step-by-step diagnostic procedures for all major systems, troubleshooting flowcharts, DTC interpretation, electrical circuit testing.

Maintenance:

Scheduled maintenance, fluid changes (oil, coolant, brake fluid, transmission fluid), filter replacements, inspections, lubrication points.

Repair Replacement:

Detailed instructions for removal, disassembly, repair, reassembly, and installation of all components and systems.

Wiring Schematics:

Complete and detailed wiring diagrams for all electrical systems, including power distribution, grounds, and component connections.

Specifications:

Torque specifications for fasteners, fluid capacities, clearances, alignments, electrical specifications, diagnostic parameters.

Depth:

Comprehensive (A-Z) – covers everything from basic fluid checks and filter changes to complete engine and transmission rebuilds, complex electrical diagnostics, and body repair.

📊 Manual Specifications

Format:

PDF

Printability:

Printable pages, with ability to blow up images and print enlarged copies.

Binding:

Digital (PDF) - No physical binding.

Paper Type For Printing:

User dependent (standard paper recommended).

Operating Systems:

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

Software Requirements:

Adobe PDF Reader and Winzip (free online).

⚙️ Engine Specifications

Base Engine:

3.6L V6 (LY7) - Often referred to as 'High Feature V6' or 'HFV6'.

Optional Engine 1:

4.6L V8 (LH2) - Northstar V8.

Optional Engine 2:

2.0L Turbocharged 4-Cylinder (LNF) - Offered in some markets or as a performance variant.

Horsepower 3.6L:

Approximately 302 hp @ 6300 rpm (may vary slightly by configuration).

Torque 3.6L:

Approximately 272 lb-ft @ 5100 rpm (may vary slightly by configuration).

Horsepower 4.6L:

Approximately 320 hp @ 6400 rpm (may vary slightly by configuration).

Torque 4.6L:

Approximately 296 lb-ft @ 4500 rpm (may vary slightly by configuration).

Horsepower 2.0L Turbo:

Approximately 270 hp @ 5500 rpm (may vary slightly by configuration).

Torque 2.0L Turbo:

Approximately 295 lb-ft @ 1700 rpm (may vary slightly by configuration).

Induction:

Sequential Fuel Injection (SFI) with Electronic Throttle Control (ETC). Turbocharged models feature direct injection.

Recommended Fuel:

Premium Unleaded Gasoline (91 octane or higher recommended for optimal performance, especially for V8 and Turbo models).

🔧 Transmission

Transmission Type:

6-speed automatic transmission (RPO MH6 or MY9) with driver shift control.

All Wheel Drive:

All-Wheel Drive (AWD) was an available option for most engine configurations.

Transmission Features:

Adaptive shift control, driver shift control for manual gear selection, potentially performance shift modes.

📐 Dimensions

Length:

Approximately 196.8 inches

Width:

Approximately 72.5 inches

Height:

Approximately 58.1 inches

Wheelbase:

Approximately 113.4 inches

Curb Weight Est:

Ranges from approximately 3,800 lbs to 4,200 lbs depending on engine and drivetrain.

🛡️ Safety Features

NHTSA Frontal Crash Driver:

5-star (for 2009, likely similar for 2010)

NHTSA Frontal Crash Passenger:

5-star (for 2009, likely similar for 2010)

IIHS Head Restraints Seat Belt Performance:

Good (for 2009, likely similar for 2010)

ABS:

Standard Anti-lock Braking System (ABS).

Traction Control:

Standard Traction Control System (TCS).

Stability Control:

Standard StabiliTrak Electronic Stability Control.

Parking Assistance:

Available Ultrasonic Rear Parking Assist.

Airbags Front:

Dual-stage frontal airbags for driver and front passenger.

Airbags Side:

Front and rear side-impact airbags, and front and rear side-curtain airbags.

Seat Belts:

Three-point safety belts with pretensioners and load limiters for all seating positions.

💡 Technology Features

Infotainment System:

Available Cadillac CUE infotainment system (or its predecessor) with touch-screen interface, navigation, Bluetooth connectivity, USB integration, and premium audio options (Bose).

Adaptive Cruise Control:

Available Adaptive Cruise Control.

Blind Spot Monitoring:

Available Side Blind Zone Alert.

Parking Sensors:

Standard or available front and rear parking sensors.

Connectivity Features:

Bluetooth for hands-free calling and audio streaming, USB ports for device integration.

Headlights:

Bi-xenon HID headlights with Adaptive Forward Lighting (AFL) available.

🔧 Maintenance

Oil Change Interval:

Typically every 7,500 miles or 12 months, whichever comes first, under normal driving conditions, using synthetic oil. Consult manual for severe service intervals.

Tire Rotation Interval:

Recommended every 7,500 miles.

Engine Air Filter Replacement:

Inspect every 15,000 miles, replace as needed. Consult manual for specific recommendation.

Cabin Air Filter Replacement:

Inspect every 15,000 miles, replace as needed. Consult manual for specific recommendation.

Engine Oil Type 3.6L V6:

SAE 5W-30 synthetic oil meeting GM specification GMW16094.

Engine Oil Type 4.6L V8:

SAE 5W-30 synthetic oil meeting GM specification GMW16094.

Engine Oil Type 2.0L Turbo:

SAE 5W-30 synthetic oil meeting GM specification GMW16094.

Coolant Type:

Dex-Cool (Orange) Long-Life Antifreeze/Coolant. GM specification GMW3420.

Automatic Transmission Fluid:

Dexron VI Automatic Transmission Fluid (ATF). Consult manual for specific capacity.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Common Problems V6:

Timing chain issues (on earlier versions of LY7, though less common on later models), carbon buildup in intake ports, PCV system issues.

Common Problems V8:

Oil leaks from valve covers or oil pan, coolant leaks from front timing cover gaskets, potential for intake manifold gasket leaks.

Common Problems Electronics:

Infotainment system glitches, power window motor failures, sensor failures (e.g., ABS wheel speed sensors).

Common Problems Suspension:

Worn control arm bushings, strut mount issues, power steering fluid leaks.

📚 Vehicle History

Cadillac Legacy:

Cadillac has a long-standing reputation for luxury, comfort, and advanced technology in American automobiles since 1902.

Sts Generation:

The 2010 Cadillac STS is part of the second generation (2005-2011), which was based on the GM Sigma platform.

2010 Updates:

The 2010 model year received a mid-cycle refresh, including updated exterior styling (grille, headlights, taillights), revised interior materials, and new technology features like updated infotainment and driver aids.

Manufacturing Location:

Lansing Grand River Assembly, Lansing, Michigan, USA.

🏆 Awards & Recognition

Ward Best Engines:

The Cadillac 4.6L Northstar V8 engine received Ward's 10 Best Engines awards in previous years, highlighting its smooth operation and power delivery. The 3.6L V6 also received accolades.

Jd Power Initial Quality:

While specific ratings for 2010 vary, the STS generally performed competitively in its segment for initial quality in its generation.