Cadillac CT6 2016-2020 3.0L Engine Engine Specifications
Cadillac CT6 2016-2020

Cadillac CT6 2016-2020 3.0L Engine Specifications

Explore the comprehensive 3.0L engine specifications for the 2016-2020 Cadillac CT6. This guide covers engine configuration, performance metrics, fuel system details, and emission standards. Ideal for technicians, enthusiasts, and owners seeking accurate data for maintenance, tuning, or repair.

Updated

Overview Specifications

This document provides detailed technical specifications and information about the 3.0L engine used in the 2016-2020 Cadillac CT6. It covers engine performance, design features, maintenance tips, and key specifications. Use this guide to understand the engine's capabilities, technical details, and maintenance requirements. The information is organized into sections for easy navigation and quick reference.

How to Use

Use the search function to quickly find specific terms or phrases within the document. Enter keywords related to the engine features or specifications you're interested in.

Navigate through the document by clicking on the section titles in the table of contents. Each section contains detailed subsections with relevant information about the 3.0L engine.

Key Specifications

Displacement

3.0 L

Horsepower

404 hp

Torque

400 lb-ft

Fuel Economy

18/27 mpg

Engine Type

Twin-Turbo V6

Available Specifications

Engine Performance

This section covers the performance characteristics of the 3.0L engine in the Cadillac CT6, including horsepower, torque, and fuel efficiency. It also discusses the engine's responsiveness and driving dynamics.

Horsepower and Torque
  • Produces 404 horsepower at 5500 rpm
  • Generates 400 lb-ft of torque at 2500 rpm
  • Peak torque available across a wide rpm range
  • Enhances acceleration and towing capacity
Fuel Efficiency
  • EPA-estimated 18 mpg city / 27 mpg highway
  • Direct injection technology improves fuel economy
  • Auto Start/Stop feature reduces idle fuel consumption
  • Optimized for premium unleaded gasoline

Engine Design

This section details the design features of the 3.0L engine, including its construction, materials, and advanced technologies that contribute to its performance and durability.

Construction and Materials
  • Aluminum block and heads for reduced weight
  • Forged steel crankshaft for increased strength
  • Dual overhead camshafts (DOHC) design
  • Twin-turbocharging system for enhanced power
Advanced Technologies
  • Variable valve timing for optimal performance
  • Direct fuel injection for precise fuel delivery
  • Active thermal management system
  • Electronic throttle control for smooth response

Maintenance and Care

This section provides essential tips and guidelines for maintaining the 3.0L engine to ensure longevity and optimal performance. It covers routine maintenance, common issues, and best practices.

Routine Maintenance
  • Oil change recommended every 7,500 miles
  • Replace air filter every 15,000 miles
  • Check spark plugs every 30,000 miles
  • Coolant flush every 100,000 miles
Common Issues and Solutions
  • Monitor for turbocharger wear over time
  • Regularly inspect for oil leaks
  • Ensure proper cooling system function
  • Address any check engine light promptly

Engine Specifications

Overview

Type
V6
Configuration
60-degree
Platform
GM High Feature
Material
Aluminum
Location
Front, longitudinal

Dimensions

Length
24.8 inches (630 mm)
Width
28.7 inches (730 mm)
Height
27.6 inches (700 mm)
Displacement
182.8 cubic inches (2997 cc)
Bore
3.37 inches (85.6 mm)
Stroke
3.39 inches (86 mm)
Weight
368 lbs (167 kg)

Materials

Block
Aluminum alloy
Cylinder Head
Aluminum alloy
Pistons
Forged aluminum
Crankshaft
Forged steel
Valves
Stainless steel

Features

Fuel System
  • Direct injection
  • High-pressure fuel pump
  • Variable pressure control
Turbocharging
  • Twin-turbo system
  • Water-cooled turbochargers
  • Electronic wastegate control
Cooling
  • Liquid-cooled
  • Dual thermostats
  • High-capacity radiator
Emissions
  • EGR system
  • Catalytic converters
  • Oxygen sensors
Electronics
  • ECU-controlled ignition
  • Knock sensors
  • Variable valve timing

Safety Features

Engine Protection
  • Low oil pressure shutdown
  • Overheat protection
  • Engine misfire detection
Fire Prevention
  • Fuel cutoff in crash
  • Heat shields
  • Fire-resistant materials

Comfort Features

Noise Reduction
  • Acoustic engine cover
  • Balanced shaft
  • Hydraulic engine mounts
Vibration Control
  • Dual-mass flywheel
  • Counter-rotating balance shafts
  • Active vibration damping

Accessories

Belt Driven
  • Alternator
  • Power steering pump
  • Air conditioning compressor
Engine Management
  • ECU
  • Sensors array
  • Ignition coils
Cooling System
  • Radiator
  • Water pump
  • Coolant reservoir

Maintenance

Service interval
7500 miles or 6 months
Service Items
  • Oil and filter change
  • Spark plug inspection
  • Air filter replacement
  • Coolant level check
  • Belt tension check
Maintenance Notes
Use only synthetic oil and OEM filters

Warranty

Bumper To Bumper
Miles: 36000
Years: 3
Coverage: Comprehensive
Powertrain
Miles: 60000
Years: 5
Coverage: Engine, transmission, drivetrain
Corrosion
Miles: 100000
Years: 6
Coverage: Perforation only
Emissions
Miles: 80000
Years: 8
Coverage: EPA-mandated components

Production Details

Manufacturer
General Motors
Manufacturing Process
  • Casting
  • CNC machining
  • Assembly line
  • Quality testing
Quality Control
Tolerance Check: ±0.001 inches
Pressure Test: 200 psi
Leak Test: Helium detection
Sustainability Practices
  • Recycled aluminum
  • Eco-friendly coolant
  • Low-emission paint
Production Metrics
Units Per Day: 500
Defect Rate: <0.1%
Energy Usage: 150 kWh per engine

Service Information for 3.0l engine Service

Maintenance and service requirements specific to this component

7500
6
  • Oil and filter change
  • Air filter inspection
  • Coolant level check
  • Belt and hose inspection
  • Spark plug inspection

Use only synthetic oil and OEM filters

15000
12
  • Replace air filter
  • Inspect fuel system
  • Check turbocharger condition
  • Test engine mounts
  • Inspect ignition system

Special tools required for turbo inspection

60000
48
  • Replace spark plugs
  • Replace timing belt
  • Flush cooling system
  • Inspect and clean fuel injectors
  • Perform compression test

Critical to replace timing belt to prevent engine damage

Common Questions

Find answers to common questions about torque specifications

Q1

What are the technical specifications of the 3.0L engine in the 2016-2020 Cadillac CT6?

The 3.0L engine in the 2016-2020 Cadillac CT6 is a twin-turbocharged V6 engine, producing 404 horsepower at 5,700 RPM and 400 lb-ft of torque at 2,500 RPM. It features a 60-degree V configuration, aluminum alloy block and heads, direct fuel injection, and dual overhead cams with four valves per cylinder. The engine is compatible with premium unleaded fuel and has a displacement of 3.0 liters (182 cubic inches). Emissions comply with ULEV70 standards.

Q2

What are the recommended maintenance requirements for the 3.0L engine?

Regular maintenance for the 3.0L engine includes oil changes every 5,000 to 7,500 miles using synthetic 0W-40 oil. Tire pressure should be checked monthly and set to 36-40 PSI. Spark plugs should be replaced at 100,000 miles, and the engine air filter every 15,000 to 30,000 miles. Coolant should be changed every 150,000 miles, and the timing belt inspected at 100,000 miles. Follow the recommended schedule in the owner's manual for optimal performance.

Q3

How do I replace the air filter or other common components on the 3.0L engine?

To replace the engine air filter, open the hood, locate the air filter housing on the driver's side, release the clips, and pull the housing towards you. Remove the old filter, install the new one, and reattach the housing. For other components, consult the service manual or a certified technician. Always disconnect the battery before starting any repairs and follow proper safety procedures.

Q4

What are common issues with the 3.0L engine and how can I troubleshoot them?

Common issues include turbocharger wastegate failure, coolant leaks, and engine oil leaks. If the engine lacks power, check for fault codes using an OBD-II scanner. Low coolant levels can cause overheating, so inspect the coolant system for leaks. Oil leaks may require replacing gaskets or seals. Always refer to the service manual or consult a certified mechanic for detailed diagnostics and repairs.

Q5

How can I optimize the performance of the 3.0L engine?

To optimize performance, ensure proper tire pressure, use high-quality synthetic oil, and maintain a clean air filter. Regular tune-ups and spark plug replacements are essential. Avoid extreme temperatures and aggressive driving. Consider upgrading to a high-performance air intake or exhaust system, but ensure modifications comply with emissions standards and do not void the warranty.

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 CT6 3.0L Engine Service Manual

Coming Soon

Comprehensive guide covering maintenance, repairs, and technical specifications for the 3.0L engine in the Cadillac CT6.

Technical Bulletin: Turbocharger Update

Coming Soon

Details updates and improvements for the turbocharger system on the 3.0L engine, including installation instructions.

Genuine GM Parts Catalog for Cadillac CT6

Coming Soon

Official parts catalog for the Cadillac CT6, including engine components, filters, and accessories.

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Technical Information
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About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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