🏷️ Basic Information

Make:

Cadillac

Model:

CTS

Year:

2011

Platform:

GM Sigma II

Chassis Code:

GMT143

👋 Introduction

Segment:

Luxury Mid-size Sedan/Coupe/Wagon

Competitors:

BMW 3 Series, Mercedes-Benz C-Class, Audi A4, Lexus IS, Infiniti G37

Design Philosophy:

Art & Science design language, rear-wheel-drive platform (optional all-wheel drive), focus on performance and luxury.

Manual Benefit:

Empowers owners to perform routine maintenance and complex repairs, saving money and extending vehicle lifespan.

📋 Manual Details

Engines Covered:

3.0L V6 (LF1), 3.6L V6 VVT (LLT)

Transmissions Covered:

6-speed automatic (GM 6L45, 6L50, 6L90)

Models Covered:

All Sedan, Coupe, and Sport Wagon variants

Estimated Pages:

1500-2500 (estimated for comprehensive coverage)

Type:

Workshop Service Repair Manual

Language:

English

Format:

Digital Downloadable (PDF)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, disassembly, lubrication system, cooling system, fuel system, ignition system, emission control systems, timing system, cylinder head, crankshaft, pistons, connecting rods, engine performance diagnostics.

Transmission Drivetrain:

Automatic transmission operation, overhaul, repair, torque converter, transmission control module (TCM), drive shafts, axles, differential, propeller shaft.

Brakes:

Brake system diagnosis, hydraulic system, power brake booster, master cylinder, brake calipers, brake pads, brake discs/rotors, anti-lock braking system (ABS), electronic stability control (ESC), parking brake.

Suspension Steering:

Front suspension, rear suspension, shock absorbers, struts, springs, control arms, ball joints, steering system, power steering, steering column, wheel alignment specifications.

Electrical Electronics:

Battery, charging system, starting system, ignition system, lighting system, instruments and gauges, body control module (BCM), powertrain control module (PCM), infotainment system, climate control, power windows, power locks, security system, wiring diagrams, diagnostic trouble codes (DTCs).

Body Chassis:

Body construction, exterior panels, doors, hood, trunk lid, interior trim, seats, glass, bumpers, frame, rust prevention and corrosion protection.

Maintenance:

Scheduled maintenance intervals, oil changes, filter replacements, fluid checks and top-offs, tire rotation, brake inspection, battery maintenance, air filter replacement, spark plug replacement.

Repair:

Engine rebuild, transmission overhaul, brake caliper replacement, suspension component replacement, electrical component diagnosis and replacement, body panel repair, HVAC system repair, exhaust system repair.

Troubleshooting:

Step-by-step diagnostic procedures for common and uncommon drivability issues, electrical faults, starting problems, cooling system leaks, brake system malfunctions.

Diagnostics:

OBD-II diagnostic procedures, use of scan tools, interpreting diagnostic trouble codes (DTCs), electrical circuit testing, component testing.

Depth:

Comprehensive from basic maintenance to complete engine and transmission rebuilds, including detailed wiring diagrams and diagnostic flowcharts.

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text within the PDF for quick information retrieval.

Printability:

Printable in full color or black and white, allowing for individual page or chapter printing.

Binding:

Not applicable (Digital Download)

Paper:

Not applicable (Digital Download)

⚙️ Engine Specifications

Engine 1 Name:

3.0L V6 (LF1)

Engine 1 Displacement:

2997 cc (183 cu in)

Engine 1 Configuration:

V6, DOHC, 24 valves

Engine 1 Horsepower:

270 hp @ 7000 rpm

Engine 1 Torque:

223 lb-ft @ 5600 rpm

Engine 2 Name:

3.6L V6 VVT (LLT)

Engine 2 Displacement:

3564 cc (217 cu in)

Engine 2 Configuration:

V6, DOHC, 24 valves, Direct Injection, Variable Valve Timing (VVT)

Engine 2 Horsepower:

304 hp @ 6400 rpm

Engine 2 Torque:

273 lb-ft @ 4700 rpm

Compression Ratio Lf1:

11.5:1

Compression Ratio Llt:

11.3:1

Fuel Delivery Lf1:

Port Fuel Injection (PFI)

Fuel Delivery Llt:

Direct Injection (DI)

Fuel Type:

Premium Unleaded Gasoline (Recommended)

🔧 Transmission

Transmission Type:

6-speed Automatic (RWD)

Transmission Type AWD:

6-speed Automatic (AWD)

Transmission Codes:

GM 6L45 (standard RWD), 6L50 (optional AWD), 6L90 (performance variants)

Transmission Control:

Electronic with driver shift control and manual mode.

📐 Dimensions

Wheelbase:

113.4 inches (2880 mm)

Length:

191.6 inches (4867 mm) (Sedan)

Width:

72.5 inches (1841 mm)

Height:

58.0 inches (1473 mm) (Sedan)

Curb Weight Est Start:

3,850 lbs (1746 kg)

Curb Weight Est End:

4,150 lbs (1882 kg)

🛡️ Safety Features

NHTSA Front Impact Driver:

5 Stars

NHTSA Front Impact Passenger:

5 Stars

NHTSA Side Impact Front Seat:

5 Stars

NHTSA Side Impact Rear Seat:

5 Stars

NHTSA Rollover Rating:

4 Stars

ABS:

Standard (4-wheel disc brakes with ABS)

Esc:

Standard (StabiliTrak Electronic Stability Control)

Traction Control:

Standard

Airbags:

Frontal airbags, front side-impact airbags, roof-mounted side curtain airbags.

💡 Technology Features

Infotainment System:

Cadillac Cue (Touch-screen interface, navigation, Bluetooth, USB connectivity).

Driver Assistance Features:

Optional: Adaptive Cruise Control, Rearview Camera, Parking Assist sensors.

Connectivity Options:

Bluetooth for phone and audio streaming, USB and auxiliary input jacks.

🔧 Maintenance

Oil Change Interval Gas:

Every 7,500 miles or 12 months (whichever comes first) with synthetic oil.

Air Filter Replacement:

Every 45,000 miles or as needed based on inspection.

Cabin Air Filter Replacement:

Every 22,500 miles or annually.

Spark Plug Replacement Lf1:

Approx. 100,000 miles (iridium-tipped plugs).

Spark Plug Replacement Llt:

Approx. 100,000 miles (direct injection specific plugs).

Engine Oil Type:

SAE 5W-30 Full Synthetic (Dexos1 or equivalent specification)

Engine Oil Capacity Lf1:

5.7 Quarts (5.4 Liters) with filter

Engine Oil Capacity Llt:

6.7 Quarts (6.3 Liters) with filter

Transmission Fluid Type:

Dexron VI Automatic Transmission Fluid

Coolant Type:

Dex-Cool (GM P/N 12346150 or equivalent)

Common Issue 1:

Water pump leaks on the 3.6L LLT engine.

Common Issue 2:

Carbon buildup on intake valves for direct injection engines (LLT).

Common Issue 3:

Flex ride control suspension issues (if equipped).

Common Issue 4:

Front suspension component wear (control arms, ball joints).

📚 Vehicle History

Brand Identity:

Cadillac is America's longest-established automotive luxury brand, known for pioneering advancements in automotive technology and design.

Generation 2:

Second generation CTS (introduced for the 2008 model year), sharing the Sigma II platform with improved handling and technology. 2011 saw minor updates and powertrain refinements.

Assembly Location:

Lansing Grand River Assembly, Lansing, Michigan, USA

🏆 Awards & Recognition

Award 1:

Car and Driver 10Best list (2008, 2009, 2010, 2011) - Highlighting its performance and value proposition in its class.

Award 2:

Ward's 10 Best Engines award for the 3.6L V6 LLT engine (2009).