🏷️ Basic Information

Make:

Cadillac

Model:

CTS

Year:

2005

Body Style:

Sedan

Chassis Code:

GMT370

👋 Introduction

Segment:

Entry-level luxury/performance sedan.

Target Audience:

Enthusiasts, DIY mechanics, and professional technicians seeking in-depth repair information.

Competitors:

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

Vehicle Design Focus:

Sporty handling, distinctive American luxury styling, rear-wheel drive platform.

Manual Advantage:

Empowers owners to perform maintenance and repairs, saving significant costs compared to dealership labor.

📋 Manual Details

Main Coverage:

All service, repair, maintenance, diagnostics, and troubleshooting procedures.

Specific Systems Covered:

Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, HVAC, Electrical System, Fuel System, Exhaust System, Body, Interior, Chassis.

Estimated Pages:

1000+

Type:

Workshop Service and Repair Manual

Language:

English

Format:

Downloadable PDF

📖 Manual Coverage

Engine Mechanical:

Engine assembly, disassembly, cylinder head, pistons, crankshaft, camshafts, valve train, timing systems.

Engine Management:

Fuel injection system, ignition system, emission control systems, sensors, actuators, ECM/PCM diagnosis and programming.

Transmission Automatic:

Automatic transmission disassembly, assembly, component testing, fluid service, torque converter.

Drivetrain:

Front axle, rear axle, drive shafts, CV joints, differentials.

Suspension:

Front and rear suspension components, shock absorbers, struts, springs, control arms, bushings.

Steering:

Power steering system, steering rack, tie rods, steering column, wheel alignment procedures.

Brakes:

Front and rear disc brakes, ABS system, brake fluid service, caliper replacement, rotor replacement.

HVAC:

Air conditioning system, heating system, climate control, refrigerant handling, blower motor, evaporator, condenser.

Electrical System:

Battery, charging system, starting system, lighting, fuses, relays, wiring diagrams, power windows, door locks.

Body And Interior:

Door panels, dashboard, seats, exterior trim, bumpers, hood, trunk lid.

Routine Maintenance:

Oil changes, filter replacements, fluid checks and top-offs, tire rotation, spark plug replacement.

Troubleshooting Diagnostics:

Diagnostic trouble codes (DTCs), symptom-based troubleshooting, circuit testing.

Repair And Replacement:

Component removal, installation, and adjustment for all major systems.

Special Tools:

Identification and usage of specialized tools required for specific repairs.

Depth:

Comprehensive, covering everything from basic maintenance to full engine and transmission rebuilds, including electrical schematics and diagnostic procedures.

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text content for quick information retrieval.

Printability:

Printable in its entirety or by individual pages/chapters.

Binding:

N/A (Digital Download)

Paper:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Code:

LD8

Displacement:

3.6 L (3564 cc)

Configuration:

V6, DOHC, 24-valve

Bore X Stroke:

95.0 mm x 83.3 mm

Compression Ratio:

10.2:1

Horsepower:

255 hp @ 6200 rpm

Torque:

252 lb-ft @ 3200 rpm

Induction:

Sequential Port Fuel Injection (SFI)

Fuel Type:

Unleaded Gasoline (87 octane recommended)

0 60 Mph:

Approx. 6.5-7.0 seconds (depending on transmission and RWD/AWD)

🔧 Transmission

Transmission Type:

5-Speed Automatic (GM 5L40-E/MY-7)

Transmission Type:

5-Speed Manual (B_G M32/MM8) - Limited Availability on some trims/engines.

Drive Layout:

Rear-Wheel Drive (RWD) standard, All-Wheel Drive (AWD) optional.

Fluid Type Automatic:

Dexron VI Automatic Transmission Fluid (ATF)

Fluid Capacity Automatic:

Approx. 7.5 quarts (7.1 Liters) for a dry fill

📐 Dimensions

Length:

192.0 inches (4877 mm)

Width:

71.5 inches (1816 mm)

Height:

57.5 inches (1461 mm)

Wheelbase:

113.1 inches (2873 mm)

Curb Weight Rwd:

3697 lbs (1677 kg)

Curb Weight AWD:

3864 lbs (1753 kg)

🛡️ Safety Features

NHTSA Front Impact:

5-Star

NHTSA Side Impact:

5-Star

IIHS Front Crash:

Good

IIHS Side Crash:

Good

ABS:

Standard Anti-lock Braking System

Traction Control:

Standard Traction Control System (TCS)

Stability Control:

Standard StabiliTrak Stability Control

Airbags:

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

Seatbelts:

Three-point seatbelts with pretensioners for all occupants.

💡 Technology Features

Audio System:

Available Bose premium audio system, AM/FM/CD player with optional navigation system.

Climate Control:

Dual-zone automatic climate control.

Parking Assist:

Available rear parking assist sensors.

Cruise Control:

Standard cruise control.

Remote Start:

Available remote keyless entry with remote start.

🔧 Maintenance

Oil Change Interval:

Every 7,500 miles or 6 months, whichever comes first (using synthetic oil). Owner's manual should be consulted for specific conditions.

Engine Coolant Flush:

Refer to manual for specific interval, typically every 5 years or 100,000 miles for extended life coolant.

Transmission Fluid Service:

Refer to manual for specific interval, often around 50,000-100,000 miles depending on driving conditions.

Engine Oil:

SAE 5W-30 Synthetic (API SN/SP or equivalent, GM dexos1 Gen 2 or higher recommended)

Engine Coolant:

GM-specified DEX-COOL 50/50 mixture (Orange coolant)

Brake Fluid:

DOT 3

Power Steering Fluid:

GM Power Steering Fluid (or equivalent specified)

Common Complaints Engine:

Oil leaks from valve covers, intake manifold gasket leaks, potential timing chain wear on higher mileage vehicles.

Common Complaints Transmission:

Occasional rough shifting, potential solenoid issues in the automatic transmission.

Common Complaints Suspension:

Front end suspension noise (ball joints, control arm bushings), early strut wear.

Common Complaints Electrical:

HVAC blower motor resistor failure, occasional issues with power window regulators.

📚 Vehicle History

Cadillac Legacy:

Long-standing American luxury marque known for innovation and comfort.

Cadillac Cts Introduction:

The Cadillac CTS was introduced for the 2003 model year as a replacement for the DeVille and Seville sedan lines, marking Cadillac's return to rear-wheel drive platforms and a more driver-focused luxury sedan.

First Generation:

First generation (2003-2007), which this manual covers.

2005 Updates:

Minor updates for 2005 included some feature packaging adjustments and minor styling tweaks, but the core platform and powertrains remained consistent with the initial launch.

Manufacturing Location:

Lansing, Michigan, USA

🏆 Awards & Recognition

Car And Driver 10 Best:

The first-generation CTS, including the 2005 model, was a 10Best honoree by Car and Driver magazine in 2003 and 2004, praised for its chassis dynamics and European-like driving feel, a significant achievement for an American luxury sedan at the time.

Jd Power Dependability:

While early models received mixed reviews in initial quality surveys, the 2005 model generally improved, with specific focus on build quality and refinement being key areas addressed by the manual.