Cadillac CTS 2003-2007 3.6L Engine Specifications
Explore the detailed 3.6L engine specifications for the 2003-2007 Cadillac CTS. Learn about performance metrics, maintenance tips, and upgrade options for this powerful engine.
Overview Specifications
This document provides detailed specifications and technical information about the 3.6L engine used in the 2003-2007 Cadillac CTS. It is designed to help users understand the engine's features, performance, and maintenance requirements. Use the search and navigation instructions to find specific information quickly. The document is organized into sections covering engine design, performance, maintenance, and key specifications for easy reference.
How to Use
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Key Specifications
Displacement
3.6L
Horsepower
255 HP
Torque
252 lb-ft
Compression Ratio
10.2:1
Fuel Efficiency
18/26 MPG
Available Specifications
Engine Design
This section covers the fundamental design aspects of the 3.6L engine, including its architecture, materials, and key components. It provides insights into the engineering behind the engine's reliability and efficiency.
Engine Design
This section covers the fundamental design aspects of the 3.6L engine, including its architecture, materials, and key components. It provides insights into the engineering behind the engine's reliability and efficiency.
Architecture
- V6 configuration with 60-degree bank angle
- Dual overhead camshafts (DOHC)
- Aluminum block and cylinder heads
- Four valves per cylinder
- Variable valve timing (VVT)
- Sequential fuel injection
Key Components
- Forged steel crankshaft
- High-strength connecting rods
- Hypereutectic aluminum pistons
- Hydraulic roller lifters
- Stainless steel exhaust manifolds
- Integrated oil cooler
Performance
This section highlights the performance capabilities of the 3.6L engine, including horsepower, torque, and fuel efficiency. It also discusses the engine's responsiveness and driving experience.
Performance
This section highlights the performance capabilities of the 3.6L engine, including horsepower, torque, and fuel efficiency. It also discusses the engine's responsiveness and driving experience.
Power Output
- 255 horsepower at 6200 RPM
- 252 lb-ft of torque at 3100 RPM
- Redline at 6500 RPM
- Compression ratio of 10.2:1
- Electronic throttle control
- Premium fuel recommended for optimal performance
Fuel Efficiency
- EPA-estimated 18 MPG city
- EPA-estimated 26 MPG highway
- Direct injection technology
- Air-to-liquid intercooler
- Low-friction engine components
- E85 flex-fuel compatibility
Maintenance
This section provides essential maintenance guidelines for the 3.6L engine, including recommended service intervals, fluid specifications, and common troubleshooting tips.
Maintenance
This section provides essential maintenance guidelines for the 3.6L engine, including recommended service intervals, fluid specifications, and common troubleshooting tips.
Service Intervals
- Oil change every 7,500 miles or 6 months
- Spark plug replacement every 100,000 miles
- Timing chain inspection every 60,000 miles
- Coolant flush every 150,000 miles
- Air filter replacement every 30,000 miles
- Fuel filter replacement every 50,000 miles
Fluid Specifications
- 5W-30 synthetic oil recommended
- Dexos-approved engine oil
- Dex-Cool coolant required
- ATF+4 automatic transmission fluid
- Dot 4 brake fluid
- Power steering fluid as per manufacturer guidelines
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Engine Specifications
Overview
- Type
- V6
- Configuration
- 60-degree
- Platform
- GM High Feature
- Material
- Aluminum block and heads
- Location
- Front longitudinal
Dimensions
- Length
- 24.8 inches (630 mm)
- Width
- 28.3 inches (719 mm)
- Height
- 27.6 inches (701 mm)
- Weight
- 367 lbs (166 kg)
- Displacement
- 3564 cc (217.5 cu in)
- Bore
- 3.7 inches (94 mm)
- Stroke
- 3.37 inches (85.6 mm)
- Oil Capacity
- 6.0 quarts (5.7 liters)
Materials
- Block
- Aluminum
- Cylinder Heads
- Aluminum
- Pistons
- Forged aluminum
- Connecting Rods
- Forged steel
- Crankshaft
- Forged steel
Features
- Performance
-
- Variable Valve Timing (VVT)
- Electronic Throttle Control
- Dual Overhead Camshafts (DOHC)
- Sequential Fuel Injection
- Efficiency
-
- Low-friction piston rings
- Optimized airflow design
- Lightweight components
- Integrated exhaust manifolds
- Durability
-
- Hardened valve seats
- High-strength bearings
- Thermal management system
- Corrosion-resistant coatings
- Technology
-
- Engine Control Module (ECM)
- Knock sensors
- Oil pressure sensor
- Coolant temperature sensor
- Emissions
-
- Catalytic converters
- EGR system
- Oxygen sensors
- Evaporative emissions control
Safety Features
- Engine Protection
-
- Low oil pressure shutdown
- Overheat warning system
- Fail-safe cooling mode
- Fire Prevention
-
- Heat shields
- Fuel cut-off system
- Fire-resistant materials
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Balanced rotating assembly
- Hydraulic engine mounts
- Vibration Control
-
- Dual-mass flywheel
- Harmonic balancer
- Isolated fuel rail
Accessories
- Cooling System
-
- Electric cooling fan
- High-capacity radiator
- Thermostat
- Coolant reservoir
- Ignition System
-
- Coil-on-plug ignition
- Spark plugs
- Ignition wires
- Crankshaft position sensor
- Fuel System
-
- Fuel pump
- Fuel injectors
- Fuel pressure regulator
- Fuel filter
Maintenance
- Service interval
- Every 7,500 miles or 6 months
- Service Items
-
- Oil and filter change
- Air filter inspection
- Spark plug replacement
- Timing chain inspection
- Coolant flush
- Fuel system cleaning
- Maintenance Notes
- Use synthetic oil for optimal performance and longevity.
Warranty
- Bumper To Bumper
- Miles: 36,000Years: 3Coverage: Comprehensive coverage
- Powertrain
- Miles: 100,000Years: 5Coverage: Engine and transmission
- Corrosion
- Miles: 100,000Years: 6Coverage: Perforation from rust
- Emissions
- Miles: 80,000Years: 8Coverage: Federal emissions components
- Warranty Terms
- Transferable to subsequent owners with no deductible.
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting
- Machining
- Assembly
- Testing
- Quality Control
- inspection: 100% component inspectionTesting: Dyno testing for performanceCertification: ISO 9001 certified
- Sustainability Practices
-
- Recycling of aluminum scrap
- Low-VOC coatings
- Energy-efficient manufacturing
- Production Metrics
- Annual Output: 200,000 unitsDefect Rate: Less than 0.1%Lead Time: 4 weeks
Service Information for 3.6l engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Air filter inspection
- Spark plug inspection
- Coolant level check
- Belt and hose inspection
Use only approved synthetic oil and OEM filters.
- Replace air filter
- Replace spark plugs
- Inspect timing chain
- Check fuel injectors
- Test battery and charging system
Ensure all components are torqued to factory specifications.
- Timing chain replacement
- Water pump replacement
- Coolant flush and fill
- Fuel system cleaning
- Comprehensive engine diagnostics
Major service interval requires specialized tools and expertise.
Common Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the 3.6L engine in the 2003-2007 Cadillac CTS?
What are the technical specifications of the 3.6L engine in the 2003-2007 Cadillac CTS?
The 3.6L engine in the 2003-2007 Cadillac CTS is a V6 engine producing between 255-300 horsepower and 220-270 lb-ft of torque. It features a 60-degree V6 configuration with aluminum block and heads, dual overhead camshafts, and variable valve timing. It is compatible with both rear-wheel drive and all-wheel drive configurations and requires regular unleaded gasoline.
Q2 What are the maintenance requirements for the 3.6L engine?
What are the maintenance requirements for the 3.6L engine?
Regular maintenance for the 3.6L engine includes oil changes every 5,000-7,500 miles using synthetic oil, tire rotations every 7,500 miles, and spark plug replacement every 100,000 miles. Additionally, the serpentine belt should be replaced every 50,000-90,000 miles, and the engine air filter should be replaced every 15,000-30,000 miles. It is recommended to follow the maintenance schedule outlined in the owner's manual.
Q3 How do I install or replace the 3.6L engine?
How do I install or replace the 3.6L engine?
Replacing the 3.6L engine in the Cadillac CTS is a complex process that requires mechanical expertise. Start by consulting a service manual for specific instructions. Disconnect the battery, drain the cooling system and engine oil, and remove all external components such as the intake manifold, exhaust manifold, and engine mounts. Carefully lift the engine out of the bay and replace it with the new unit. Reattach all components and refill fluids. It is highly recommended to seek professional assistance for this procedure.
Q4 How do I troubleshoot common issues with the 3.6L engine?
How do I troubleshoot common issues with the 3.6L engine?
Common issues with the 3.6L engine include rough idling, reduced performance, or illuminated check engine lights. Start by scanning for trouble codes using an OBD-II scanner. Check for vacuum leaks, faulty spark plugs, or ignition coil issues. Inspect the air intake system for blockages and ensure the fuel system is functioning properly. If problems persist, consult a professional mechanic for further diagnosis and repair.
Q5 How can I optimize the performance of the 3.6L engine?
How can I optimize the performance of the 3.6L engine?
To optimize the performance of the 3.6L engine, consider upgrading to a high-performance air filter and cat-back exhaust system. Ensure the engine is properly tuned with the latest software updates from GM. Regular maintenance, such as keeping the engine oil fresh and the cooling system clean, will also contribute to optimal performance. Additionally, lightweight pulleys and a performance-oriented engine tune can enhance power output.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Cadillac CTS 3.6L Engine Service Manual
Coming SoonA comprehensive guide covering maintenance, repair, and troubleshooting procedures for the 3.6L engine.
Technical Service Bulletin - Engine Performance Update
Coming SoonOfficial updates and bulletins from GM addressing common issues and performance enhancements.
Genuine GM Parts Catalog
Coming SoonA detailed catalog of genuine parts and accessories compatible with the 2003-2007 Cadillac CTS 3.6L engine.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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