GMC Envoy 2002-2009 Fuel System Specifications
Explore detailed fuel specifications for the 2002-2009 GMC Envoy, including fuel type, tank capacity, economy, and emission standards. Essential for maintenance, performance, and compliance.
Overview Specifications
This document provides detailed fuel specifications for the 2002-2009 GMC Envoy. It includes information on fuel types, fuel economy, tank capacity, and other related technical details. Use this guide to understand the fuel requirements and performance metrics of the vehicle. The document is organized into sections for easy navigation, with quick reference tables for key specifications.
How to Use
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Navigate through the document using the section titles and subsections. Each section is labeled clearly, and subsections provide detailed points for easy reference.
Key Specifications
Fuel Type
87 Octane (Regular Unleaded)
Fuel Tank Capacity
22.5 Gallons
City MPG
15-16 MPG
Highway MPG
20-22 MPG
Combined MPG
17-18 MPG
Available Specifications
Fuel Types and Requirements
This section covers the types of fuel recommended for the 2002-2009 GMC Envoy, including octane ratings and any special requirements for optimal performance.
Fuel Types and Requirements
This section covers the types of fuel recommended for the 2002-2009 GMC Envoy, including octane ratings and any special requirements for optimal performance.
Recommended Fuel Type
- Regular unleaded gasoline with an octane rating of 87 or higher
- Premium fuel is not required but may improve performance
- Avoid using diesel or ethanol blends above 10% (E10)
- Use of fuel additives is optional but not necessary
Fuel System Specifications
- Sequential multi-port fuel injection system
- Fuel tank material: high-density polyethylene
- Fuel pump pressure: 55-62 psi
- Fuel filter replacement interval: every 30,000 miles
Fuel Economy and Efficiency
This section provides details on the fuel economy ratings for the 2002-2009 GMC Envoy, including city, highway, and combined MPG estimates.
Fuel Economy and Efficiency
This section provides details on the fuel economy ratings for the 2002-2009 GMC Envoy, including city, highway, and combined MPG estimates.
EPA Fuel Economy Ratings
- City: 15-16 MPG
- Highway: 20-22 MPG
- Combined: 17-18 MPG
- Varies slightly by engine type and drivetrain
Factors Affecting Fuel Efficiency
- Driving habits (e.g., aggressive acceleration reduces efficiency)
- Vehicle load and towing capacity
- Tire pressure and alignment
- Regular maintenance improves fuel economy
Fuel Tank and Capacity
This section outlines the fuel tank specifications, including capacity, materials, and safety features.
Fuel Tank and Capacity
This section outlines the fuel tank specifications, including capacity, materials, and safety features.
Fuel Tank Capacity
- Standard fuel tank capacity: 22.5 gallons
- Extended-range models: 25 gallons
- Reserve fuel capacity: approximately 2.5 gallons
- Fuel gauge accuracy: ±5%
Fuel Tank Safety Features
- Rollover valve to prevent fuel spillage
- Impact-resistant tank design
- Vapor recovery system to reduce emissions
- Leak detection system integrated with onboard diagnostics
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Component Specifications
Overview
- Type
- Gasoline
- Configuration
- V6 or V8 engine options
- Platform
- GMT360
- Material
- Steel fuel tank
- Location
- Rear axle-mounted
Dimensions
- Fuel Tank Capacity
- 19.0 gallons (71.9 liters)
- Fuel Tank Length
- 32.5 inches (82.6 cm)
- Fuel Tank Width
- 24.0 inches (61.0 cm)
- Fuel Tank Height
- 12.5 inches (31.8 cm)
- Fuel Line Diameter
- 0.375 inches (9.5 mm)
- Fuel Pump Pressure
- 58 psi (4.0 bar)
- Fuel Filter Size
- 5.0 inches (12.7 cm) length, 2.5 inches (6.4 cm) diameter
Materials
- Fuel Tank
- High-density polyethylene (HDPE)
- Fuel Lines
- Nylon with stainless steel reinforcement
- Fuel Pump
- Stainless steel and plastic composite
- Fuel Filter
- Cellulose and resin media
Features
- Fuel Delivery
-
- Sequential fuel injection
- Returnless fuel system
- Electronic fuel pressure regulator
- Fuel Monitoring
-
- Fuel level sensor
- Low fuel warning light
- Miles-to-empty calculation
- Fuel Efficiency
-
- Variable valve timing (V8 models)
- Optimized fuel injector spray pattern
- Air-fuel ratio monitoring
- Safety
-
- Rollover valve
- Evaporative emissions control
- Impact-resistant fuel tank
Safety Features
- Crash Protection
-
- Fuel pump cutoff switch
- Reinforced fuel tank shield
- Fire Prevention
-
- Flame arrestor in fuel filler neck
- Leak detection system
- Emissions Control
-
- Evaporative emissions system
- Onboard diagnostics (OBD-II)
Comfort Features
- Refueling
-
- Easy-access fuel filler door
- Capless fuel filler system (2006+ models)
- Driving Range
-
- Extended range with 19-gallon tank
- Accurate fuel gauge
Accessories
- Fuel System
-
- Replacement fuel pump
- Fuel filter kit
- Fuel injector cleaner
- Monitoring
-
- Fuel pressure gauge
- Fuel economy monitor
- Diagnostic scan tool
- Maintenance
-
- Fuel system cleaner
- Fuel stabilizer
- Fuel line repair kit
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Inspect fuel lines for leaks
- Replace fuel filter
- Check fuel pump pressure
- Clean fuel injectors
- Inspect fuel tank for damage
- Maintenance Notes
- Use only unleaded gasoline with a minimum octane rating of 87 (AKI). Avoid ethanol blends above 10%.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Fuel system components
- Powertrain
- Miles: 100,000Years: 5Coverage: Fuel pump and injectors
- Emissions
- Miles: 50,000Years: 4Coverage: Evaporative emissions system
- Corrosion
- Miles: 100,000Years: 6Coverage: Fuel tank and lines
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Injection molding for fuel tank
- Robotic assembly for fuel lines
- Precision calibration for fuel injectors
- Quality Control
- Pressure Testing: Fuel tank and lines tested at 30 psiLeak Detection: Helium leak testing for all connectionsPerformance Verification: Fuel pump flow rate and pressure validation
- Sustainability Practices
-
- Recycled materials in fuel tank construction
- Low-VOC fuel system components
- Emission-compliant manufacturing processes
- Production Metrics
- Annual Production: Approximately 150,000 unitsDefect Rate: Less than 0.1%Recycling Rate: 95% of fuel system components recyclable
Service Information for fuel Service
Maintenance and service requirements specific to the fuel system
- Inspect fuel lines and connections
- Replace fuel filter
- Check fuel pump pressure
- Test fuel injector performance
- Inspect fuel tank for damage or leaks
Use only OEM or equivalent replacement parts for fuel system components.
- Perform fuel system cleaning
- Inspect and clean fuel injectors
- Check evaporative emissions system
- Test fuel pressure regulator
- Inspect fuel filler neck and cap
Specialized fuel system cleaning equipment may be required.
- Replace fuel pump assembly
- Inspect and replace fuel lines if necessary
- Perform complete fuel system diagnostic
- Check and replace fuel tank if damaged
- Verify emissions system functionality
Fuel pump replacement requires dropping the fuel tank. Professional service recommended.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the fuel type and capacity for the 2002-2009 GMC Envoy?
What is the fuel type and capacity for the 2002-2009 GMC Envoy?
The 2002-2009 GMC Envoy typically uses regular unleaded gasoline with an octane rating of 87. The fuel tank capacity is approximately 22 gallons (83 liters). It is compatible with ethanol blends up to E10 (10% ethanol). Always refer to the owner's manual for specific fuel requirements and avoid using diesel or other incompatible fuels to prevent engine damage.
Q2 What are the maintenance requirements for the fuel system in the GMC Envoy?
What are the maintenance requirements for the fuel system in the GMC Envoy?
The fuel system in the GMC Envoy requires regular maintenance to ensure optimal performance. Replace the fuel filter every 30,000 miles or as recommended in the owner's manual. Inspect fuel lines for leaks or damage annually. Use fuel system cleaners every 15,000 miles to prevent carbon buildup. Regularly check the fuel pump and injectors for proper operation and replace them if necessary.
Q3 How do I replace the fuel filter in a 2002-2009 GMC Envoy?
How do I replace the fuel filter in a 2002-2009 GMC Envoy?
To replace the fuel filter, first, relieve the fuel system pressure by removing the fuel pump fuse and running the engine until it stalls. Locate the fuel filter, usually along the frame rail. Disconnect the fuel lines using a line disconnect tool. Remove the old filter and install the new one, ensuring proper orientation. Reconnect the fuel lines and reinstall the fuel pump fuse. Start the engine and check for leaks.
Q4 What should I do if my GMC Envoy has poor fuel economy or stalling issues?
What should I do if my GMC Envoy has poor fuel economy or stalling issues?
Poor fuel economy or stalling can result from a clogged fuel filter, faulty fuel pump, or dirty fuel injectors. Start by inspecting and replacing the fuel filter if necessary. Check the fuel pump pressure using a gauge; it should be within the manufacturer's specifications. Clean or replace fuel injectors if they are clogged. Also, ensure the air filter and spark plugs are in good condition.
Q5 How can I optimize the fuel efficiency of my GMC Envoy?
How can I optimize the fuel efficiency of my GMC Envoy?
To optimize fuel efficiency, maintain proper tire pressure, use the recommended grade of motor oil, and replace air filters regularly. Avoid excessive idling and aggressive driving. Ensure the fuel system is clean and free of leaks. Use a fuel system cleaner periodically to remove deposits. Regularly service the engine and transmission to ensure they operate efficiently.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2002-2009 GMC Envoy Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and troubleshooting for the GMC Envoy. Includes detailed diagrams and step-by-step instructions.
GMC Envoy Technical Service Bulletin (TSB) Updates
Coming SoonCollection of technical service bulletins addressing common issues and updates for the 2002-2009 GMC Envoy.
GMC Envoy Parts and Accessories Catalog
Coming SoonDetailed catalog of OEM and aftermarket parts and accessories for the 2002-2009 GMC Envoy, including fuel system components.
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