Cadillac DTS 2006-2011 Fuel System Specifications
Cadillac DTS 2006-2011

Cadillac DTS 2006-2011 Fuel System Specifications

Explore detailed fuel specifications for the 2006-2011 Cadillac DTS, including fuel type, tank capacity, economy, and emission standards. Essential for maintenance and performance optimization.

Updated

Overview Specifications

This document provides detailed fuel specifications for the 2006-2011 Cadillac DTS. It is designed to assist owners, technicians, and enthusiasts in understanding the vehicle's fuel system, efficiency, and maintenance requirements. The information is organized into sections for easy navigation and includes a quick reference guide for key specifications. Use the search and navigation instructions to find specific details quickly.

How to Use

Use the search function to find specific terms or phrases related to fuel specifications. Enter keywords like 'fuel type' or 'MPG' to locate relevant information quickly. Ensure your search terms are precise for accurate results.

Navigate through the document by scrolling through sections or clicking on section titles. Each section is organized by topic, such as fuel efficiency or fuel system components, making it easy to find the information you need.

Key Specifications

Fuel Type

Premium Unleaded

Fuel Tank Capacity

18.5 gallons

City MPG

15

Highway MPG

23

Combined MPG

18

Available Specifications

Fuel Efficiency

This section covers the fuel efficiency metrics of the 2006-2011 Cadillac DTS, including city, highway, and combined MPG ratings. It also discusses factors that can affect fuel efficiency, such as driving conditions and maintenance practices.

MPG Ratings
  • City MPG: 15
  • Highway MPG: 23
  • Combined MPG: 18
  • Fuel tank capacity: 18.5 gallons
  • Annual fuel cost (estimated): $2,500
  • Range: Approximately 333 miles on a full tank
Factors Affecting Efficiency
  • Driving habits (e.g., aggressive acceleration)
  • Vehicle maintenance (e.g., clean air filters)
  • Tire pressure and alignment
  • Environmental conditions (e.g., extreme temperatures)

Fuel System Components

This section provides an overview of the key components of the Cadillac DTS fuel system, including the fuel tank, fuel pump, injectors, and filters. It also includes maintenance tips to ensure optimal performance.

Fuel Pump and Tank
  • Electric fuel pump located inside the fuel tank
  • Fuel tank material: High-density polyethylene
  • Fuel pump pressure: 58 psi
  • Fuel tank capacity: 18.5 gallons
Fuel Injectors and Filters
  • Multi-port fuel injection system
  • Fuel injector flow rate: 24 lbs/hr
  • Fuel filter replacement interval: Every 30,000 miles
  • Fuel filter location: Along the fuel line

Fuel Type and Recommendations

This section outlines the recommended fuel type for the Cadillac DTS and explains the benefits of using the correct fuel. It also addresses common questions about alternative fuels and additives.

Recommended Fuel
  • Fuel type: Premium unleaded gasoline (91 octane or higher)
  • Benefits of premium fuel: Improved performance and efficiency
  • Minimum octane rating: 87 (with reduced performance)
  • Ethanol blend compatibility: Up to 10% ethanol (E10)
Fuel Additives
  • Use of fuel system cleaners recommended every 5,000 miles
  • Avoid additives containing methanol or silicone
  • Octane boosters not necessary for premium fuel
  • Follow manufacturer guidelines for additive use

Component Specifications

Overview

Type
Gasoline
Configuration
Internal Combustion Engine
Platform
Northstar V8
Material
Aluminum Alloy
Location
Front Engine

Dimensions

Tank Capacity
18.5 gallons (70 liters)
Fuel Line Diameter
0.3125 inches (8 mm)
Fuel Filter Size
2.5 inches (63.5 mm)
Fuel Pump Pressure
58 psi (400 kPa)
Fuel injector Flow Rate
24 lb/hr (255 cc/min)
Fuel Rail Length
24 inches (610 mm)
Fuel Filter Service interval
30,000 miles (48,280 km)

Materials

Fuel Tank
High-Density Polyethylene
Fuel Lines
Nylon with EPDM coating
Fuel Filter
Cellulose and Resin
Fuel Pump
Thermoplastic and Metal Alloy

Features

Fuel Delivery
  • Sequential Fuel Injection
  • Returnless Fuel System
  • Electronic Throttle Control
Emission Control
  • Catalytic Converter
  • Evaporative Emission System
  • Oxygen Sensors
Performance
  • High-Pressure Fuel Pump
  • Multi-Port Fuel Injection
  • Advanced Engine Control Module
Safety
  • Automatic Shutoff Valve
  • Fuel Level Sensor
  • Impact-Activated Fuel Pump Cutoff

Safety Features

Fire Prevention
  • Flame Arrestor in Fuel Tank
  • Fuel Line Safety Clips
Leak Detection
  • Evaporative Emission System
  • Fuel Pressure Sensor
Impact Protection
  • Reinforced Fuel Tank
  • Crash-Activated Fuel Pump Shutdown

Comfort Features

Fuel Efficiency
  • Optimized Fuel Injection Timing
  • Variable Valve Timing
Noise Reduction
  • Insulated Fuel Lines
  • Quiet Fuel Pump Design
Convenience
  • Easy-Access Fuel Filter
  • Large Fuel Tank Capacity

Accessories

Fuel System Components
  • Fuel Pressure Regulator
  • Fuel Rail
  • Fuel Injectors
Diagnostic Tools
  • OBD-II Scanner
  • Fuel Pressure Tester
  • Injector Cleaner
Maintenance Kits
  • Fuel Filter Replacement Kit
  • Fuel Pump Service Kit
  • Fuel System Cleaner

Maintenance

Service interval
30,000 miles (48,280 km)
Service Items
  • Inspect Fuel Lines and Connections
  • Replace Fuel Filter
  • Check Fuel Pump Pressure
  • Clean Fuel Injectors
  • Inspect Evaporative Emission System
Maintenance Notes
Use only recommended fuel grade and additives to ensure optimal performance and longevity.

Warranty

Basic Warranty
Miles: 36,000
Years: 3
Coverage: Bumper-to-Bumper
Powertrain Warranty
Miles: 100,000
Years: 5
Coverage: Engine and Transmission
Emissions Warranty
Miles: 80,000
Years: 8
Coverage: Catalytic Converter and Sensors
Corrosion Warranty
Miles: Unlimited
Years: 6
Coverage: Perforation from Rust

Production Details

Manufacturer
General Motors
Manufacturing Process
  • Injection Molding for Fuel Tank
  • CNC Machining for Fuel Rails
  • Automated Assembly for Fuel Pump
Quality Control
Testing Procedures: Pressure Testing for Fuel Lines, Flow Rate Testing for Injectors, Leak Testing for Fuel Tank
Certifications: ISO 9001, SAE Standards Compliance
Sustainability Practices
  • Recycled Materials in Fuel Tank
  • Eco-Friendly Manufacturing Processes
  • Reduced Emissions in Production
Production Metrics
Annual Production: 50,000 units
Defect Rate: 0.05%
Lead Time: 4 weeks

Service Information for Fuel Service

Maintenance and service requirements specific to the fuel system

30,000
24
  • Replace Fuel Filter
  • Inspect Fuel Lines
  • Check Fuel Pump Pressure
  • Clean Fuel Injectors
  • Inspect Evaporative Emission System

Ensure all connections are secure and free of leaks.

60,000
48
  • Replace Fuel Pump
  • Inspect Fuel Tank
  • Check Fuel Pressure Regulator
  • Test Fuel Injectors
  • Inspect Fuel Rail

Use OEM parts for replacement to maintain system integrity.

100,000
84
  • Replace Fuel Lines
  • Inspect Fuel Tank for Corrosion
  • Replace Fuel Pressure Regulator
  • Test Fuel Pump Performance
  • Inspect Evaporative Emission System

Perform a thorough system check to ensure all components are functioning correctly.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the technical specifications of the fuel system in the 2006-2011 Cadillac DTS?

The 2006-2011 Cadillac DTS features a fuel-injected 4.6L Northstar V8 engine or a 3.6L V6 engine, depending on the model year. The fuel system includes a fuel tank capacity of approximately 18 gallons for the V8 models and 17 gallons for the V6 models. The recommended fuel type is regular unleaded gasoline with an octane rating of 87. The fuel system is compatible with E10 fuel (10% ethanol). The fuel pressure specification for the V8 engine is around 40-45 PSI, while the V6 operates at approximately 35-40 PSI.

Q2

What are the maintenance requirements for the fuel system?

Regular maintenance for the fuel system includes inspecting fuel lines and connections for leaks, replacing the fuel filter every 15,000 to 30,000 miles, and cleaning the fuel injectors every 30,000 to 60,000 miles. It is also important to use the correct type of fuel as specified in the owner's manual. Neglecting these maintenance steps can lead to reduced fuel efficiency, poor engine performance, and potential damage to fuel system components.

Q3

How do I install or replace the fuel tank or fuel pump?

To replace the fuel tank or fuel pump, start by disconnecting the negative battery terminal and relieving the fuel system pressure using a scan tool or by driving the vehicle until the fuel light comes on. Remove the rear seat and access panel to reach the fuel pump. Disconnect the electrical connector and fuel lines, then lower the fuel tank. Replace the fuel pump or tank as needed, ensuring all connections are secure. Reinstall the tank and reconnect all lines and electrical connectors. Refill the fuel tank and check for leaks before test driving the vehicle.

Q4

How do I troubleshoot common fuel system issues?

Common fuel system issues include poor engine performance, reduced fuel efficiency, or the fuel light illuminating. Start by checking the fuel cap for a proper seal. Use a scan tool to retrieve any trouble codes from the ECM. Inspect fuel lines and connections for leaks or damage. Check the fuel filter for contamination and replace it if necessary. If issues persist, consider testing the fuel pressure with a gauge or inspecting the fuel injectors for clogging or malfunction.

Q5

How can I optimize the performance of my Cadillac DTS's fuel system?

To optimize fuel system performance, ensure regular maintenance such as fuel filter replacements and injector cleaning. Use high-quality gasoline with the recommended octane rating. Avoid driving habits that reduce fuel efficiency, such as rapid acceleration or frequent idling. Keep the fuel tank at least a quarter full to prevent moisture buildup and contamination. Consider upgrading to a high-flow fuel filter or injectors for improved performance, but ensure any modifications are compatible with your vehicle's specifications.

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 DTS Service Manual

Coming Soon

Comprehensive guide covering technical specifications, maintenance schedules, and repair procedures for the 2006-2011 Cadillac DTS fuel system.

Fuel System Technical Bulletin

Coming Soon

Official bulletin addressing common fuel system issues, updates, and repair recommendations for the 2006-2011 Cadillac DTS.

Cadillac DTS Parts Catalog

Coming Soon

Detailed catalog of genuine and aftermarket parts for the fuel system of the 2006-2011 Cadillac DTS, including filters, pumps, and injectors.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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