Cadillac STS 2005-2011 Fuel System Specifications
Explore the detailed fuel specifications for the 2005-2011 Cadillac STS, including fuel type, octane rating, capacity, and economy. This guide is essential for owners and mechanics to ensure optimal performance and maintenance.
Overview Specifications
This document provides detailed fuel specifications and related information for the 2005-2011 Cadillac STS. It includes technical details about fuel type, efficiency, capacity, and performance metrics. Use this guide to understand the vehicle's fuel requirements and optimize its performance. The document is organized into sections for easy navigation, with a quick reference table summarizing key specifications.
How to Use
Use the search function to locate specific terms or phrases within the document. Enter keywords related to fuel specifications, such as 'fuel type' or 'tank capacity,' to quickly find relevant information.
Navigate through the document by scrolling through the sections or using the table of contents. Each section is clearly labeled and contains subsections with detailed information about fuel-related topics.
Key Specifications
Fuel Type
Premium Unleaded (91+ octane)
Tank Capacity
17.5 gallons
City MPG
15-17 MPG
Highway MPG
23-25 MPG
Driving Range
300-400 miles
Available Specifications
Fuel Type and Requirements
This section covers the type of fuel recommended for the 2005-2011 Cadillac STS, along with any specific requirements or additives. It also includes information on the effects of using alternative fuels or non-recommended options.
Fuel Type and Requirements
This section covers the type of fuel recommended for the 2005-2011 Cadillac STS, along with any specific requirements or additives. It also includes information on the effects of using alternative fuels or non-recommended options.
Recommended Fuel Type
- Premium unleaded gasoline (91 octane or higher) is recommended for optimal performance.
- Regular unleaded gasoline (87 octane) can be used but may reduce engine efficiency.
- Avoid using diesel or E85 ethanol blends, as they are not compatible.
- Using fuel additives is generally unnecessary unless specified by a technician.
Alternative Fuel Considerations
- E10 ethanol blends (up to 10% ethanol) are acceptable but may slightly reduce fuel economy.
- Using lower octane fuel may trigger engine knocking and reduce performance.
- Higher octane fuel can improve acceleration and fuel efficiency in some driving conditions.
- Always consult the owner's manual for specific fuel recommendations.
Fuel Efficiency and Economy
This section provides details about the Cadillac STS's fuel efficiency, including EPA-estimated mileage figures and factors that influence fuel economy. It also offers tips for improving efficiency during daily driving.
Fuel Efficiency and Economy
This section provides details about the Cadillac STS's fuel efficiency, including EPA-estimated mileage figures and factors that influence fuel economy. It also offers tips for improving efficiency during daily driving.
EPA-Estimated Mileage
- City: 15-17 MPG (miles per gallon) depending on the engine and driving conditions.
- Highway: 23-25 MPG for most models.
- Combined: 18-20 MPG on average.
- V8 models typically have lower fuel efficiency compared to V6 models.
Factors Affecting Fuel Economy
- Driving habits, such as aggressive acceleration and braking, can reduce efficiency.
- Proper tire inflation and regular maintenance can improve fuel economy.
- Using air conditioning or carrying heavy loads may decrease mileage.
- Higher speeds on the highway can significantly impact fuel consumption.
Fuel Tank and Capacity
This section outlines the fuel tank specifications for the 2005-2011 Cadillac STS, including capacity, range, and refueling considerations. It also provides tips for maintaining the fuel system.
Fuel Tank and Capacity
This section outlines the fuel tank specifications for the 2005-2011 Cadillac STS, including capacity, range, and refueling considerations. It also provides tips for maintaining the fuel system.
Fuel Tank Specifications
- Fuel tank capacity: 17.5 gallons (66.2 liters).
- Average driving range: 300-400 miles on a full tank.
- The fuel tank is made of durable materials to prevent leaks and corrosion.
- The fuel filler neck is designed for easy refueling with standard nozzles.
Fuel System Maintenance
- Regularly inspect the fuel cap to ensure it seals properly.
- Replace the fuel filter as recommended in the owner's manual.
- Use fuel system cleaners periodically to remove deposits.
- Monitor for signs of fuel leaks or unusual odors, which may indicate a problem.
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Component Specifications
Overview
- Type
- Gasoline
- Configuration
- Internal Combustion Engine
- Platform
- GM Sigma Platform
- Material
- Steel Fuel Tank
- Location
- Rear Axle
Dimensions
- Fuel Tank Capacity
- 18.5 gallons / 70 liters
- Fuel Line Diameter
- 0.5 inches / 12.7 mm
- Fuel Pump Pressure
- 58 psi / 400 kPa
- Fuel Filter Length
- 6 inches / 152.4 mm
- Fuel injector Flow Rate
- 24 lbs/hr / 10.89 kg/hr
- Fuel Rail Length
- 24 inches / 609.6 mm
- Fuel Tank Weight
- 12 lbs / 5.44 kg
Materials
- Fuel Tank
- High-density polyethylene
- Fuel Lines
- Nylon with stainless steel reinforcement
- Fuel Pump
- Aluminum housing with plastic impeller
- Fuel injectors
- Stainless steel with Teflon seals
- Fuel Rail
- Aluminum alloy
Features
- Fuel System
-
- Multi-port fuel injection
- Returnless fuel system
- Electronic fuel pressure regulator
- Integrated fuel pump module
- Emissions
-
- EVAP system with charcoal canister
- OBD-II compliant
- Catalytic converter compatibility
- Low sulfur fuel compatibility
- Performance
-
- High-pressure fuel pump
- Precision fuel injectors
- Optimized fuel rail for even distribution
- Quick-start fuel delivery
- Safety
-
- Fuel tank impact sensors
- Rollover valve
- Fuel cut-off inertia switch
- Leak detection system
- Maintenance
-
- Replaceable fuel filter
- Serviceable fuel pump
- Easy access fuel injectors
- Fuel system cleaner compatibility
Safety Features
- Crash Safety
-
- Fuel tank shield
- Automatic fuel shut-off
- Fire Prevention
-
- Flame arrestor in fuel tank
- Heat-resistant fuel lines
- Leak Prevention
-
- Double-sealed fuel pump
- Pressure-tested fuel tank
Comfort Features
- Noise Reduction
-
- Quiet fuel pump operation
- Insulated fuel lines
- Smooth Operation
-
- Consistent fuel pressure
- Vibration-dampened fuel rail
- Ease Of Use
-
- Easy fuel cap access
- Clear fuel level indicator
- Environmental
-
- Low evaporative emissions
- Compatible with ethanol blends
Accessories
- Fuel Caps
-
- Locking fuel cap
- Vented fuel cap
- OEM replacement cap
- Fuel Additives
-
- Fuel system cleaner
- Octane booster
- Fuel stabilizer
- Maintenance Tools
-
- Fuel pressure tester
- Fuel line disconnect tool
- Fuel injector cleaner kit
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Replace fuel filter
- Inspect fuel lines
- Check fuel pump pressure
- Clean fuel injectors
- Inspect EVAP system
- Maintenance Notes
- Use only unleaded gasoline with a minimum octane rating of 91. Avoid ethanol blends above 10%.
Warranty
- Basic Warranty
- Miles: 36,000Years: 3Coverage: Bumper to bumper
- Powertrain Warranty
- Miles: 100,000Years: 5Coverage: Engine and fuel system
- Emissions Warranty
- Miles: 50,000Years: 4Coverage: EVAP system and catalytic converter
- Corrosion Warranty
- Miles: UnlimitedYears: 6Coverage: Fuel tank and lines
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Injection molding for fuel tank
- CNC machining for fuel rail
- Robotic assembly for fuel pump
- Quality Control
- Pressure Testing: Fuel tank and linesLeak Testing: Complete fuel systemPerformance Testing: Fuel pump and injectors
- Sustainability Practices
-
- Recycled materials in fuel tank
- Low-emission manufacturing
- Energy-efficient production
- Production Metrics
- Units Per Day: 500Defect Rate: 0.01%Energy Usage: 5 kWh per unit
Service Information for fuel Service
Maintenance and service requirements specific to the fuel system
- Replace fuel filter
- Inspect fuel lines for leaks
- Check fuel pump pressure
- Test fuel injector operation
- Inspect EVAP system
Use only OEM or equivalent parts for replacement.
- Clean fuel injectors
- Replace fuel pump if necessary
- Inspect fuel tank for damage
- Check fuel pressure regulator
- Test fuel system for leaks
Special tools may be required for fuel pump replacement.
- Replace fuel pump
- Replace fuel injectors
- Inspect and replace fuel lines as needed
- Test EVAP system functionality
- Perform complete fuel system diagnostic
Major service interval; consider replacing all critical components.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the fuel capacity and recommended fuel type for the 2005-2011 Cadillac STS?
What is the fuel capacity and recommended fuel type for the 2005-2011 Cadillac STS?
The 2005-2011 Cadillac STS has a fuel tank capacity of approximately 17.5 gallons. The recommended fuel type is regular unleaded gasoline with an octane rating of 87. Using higher-octane fuel does not improve performance but lower-octane fuel may cause engine knocking or pinging, which could lead to long-term damage.
Q2 What is the maintenance schedule for the fuel system?
What is the maintenance schedule for the fuel system?
Regular maintenance for the fuel system includes replacing the fuel filter every 30,000 miles and inspecting the fuel lines and connections every 15,000 miles. Additionally, the fuel injectors should be cleaned every 60,000 miles to ensure optimal performance and fuel efficiency.
Q3 How do I replace the fuel pump or fuel sensor?
How do I replace the fuel pump or fuel sensor?
To replace the fuel pump or fuel sensor, start by disconnecting the battery and relieving fuel system pressure. Remove the fuel tank access panel or drop the tank, depending on the model year. Disconnect the electrical connectors and fuel lines, then remove the old pump or sensor. Install the new component, ensuring all connections are secure, and reassemble the system. Consult a professional if you are not experienced with fuel system repairs.
Q4 What are common issues with the fuel system and how do I troubleshoot them?
What are common issues with the fuel system and how do I troubleshoot them?
Common issues include a faulty fuel pump, clogged fuel filter, or malfunctioning fuel pressure regulator. If the engine stalls or has difficulty starting, check for trouble codes using an OBD-II scanner. Listen for unusual noises from the fuel pump or inspect for leaks. Replace the fuel filter if fuel flow is restricted. Consult a mechanic if issues persist.
Q5 How can I optimize fuel efficiency and performance?
How can I optimize fuel efficiency and performance?
Optimize fuel efficiency by maintaining proper tire pressure, driving at moderate speeds, and avoiding aggressive acceleration. Regular tune-ups, including spark plug replacement and air filter cleaning, also improve performance. Using high-quality fuel and avoiding excessive idling can further enhance efficiency.
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 STS Service Manual
Coming SoonComprehensive guide covering diagnostics, repairs, and maintenance for the 2005-2011 Cadillac STS fuel system.
Technical Bulletin: Fuel Pressure Regulator Update
Coming SoonDetails symptoms and repair procedures for fuel pressure regulator issues in 2005-2011 Cadillac STS models.
Cadillac STS Parts Catalog
Coming SoonCatalog of approved parts and accessories for the 2005-2011 Cadillac STS, including fuel system components.
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Technical Information
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