GMC Envoy 1998-2000 Fuel System Specifications
Explore the detailed fuel specifications for the 1998-2000 GMC Envoy, including fuel type, tank capacity, economy, and emission standards. Essential for maintenance and performance optimization.
Overview Specifications
This document provides detailed fuel specifications and related information for the 1998-2000 GMC Envoy. It is designed to assist users in understanding the fuel system, efficiency, and maintenance requirements. The document is organized into sections for easy navigation, with subsections offering technical details. Use the search functionality to find specific terms or navigate through sections to explore comprehensive fuel-related data.
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Key Specifications
Fuel Type
Unleaded Gasoline
Octane Rating
87 or higher
Fuel Tank Capacity
21 gallons
City MPG
15-17 MPG
Highway MPG
20-22 MPG
Available Specifications
Fuel Type and Requirements
This section covers the type of fuel recommended for the 1998-2000 GMC Envoy, including octane ratings and any specific fuel additives required for optimal performance.
Fuel Type and Requirements
This section covers the type of fuel recommended for the 1998-2000 GMC Envoy, including octane ratings and any specific fuel additives required for optimal performance.
Recommended Fuel Type
- Use 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).
- Ensure fuel is free from contaminants or impurities.
Fuel Additives
- Use fuel injector cleaner every 3,000 miles for maintenance.
- Avoid additives containing methanol or silicone.
- Detergent additives can help keep the fuel system clean.
- Follow manufacturer guidelines for approved additives.
Fuel Efficiency and Economy
This section provides information on the fuel efficiency of the 1998-2000 GMC Envoy, including mileage estimates and factors affecting fuel economy.
Fuel Efficiency and Economy
This section provides information on the fuel efficiency of the 1998-2000 GMC Envoy, including mileage estimates and factors affecting fuel economy.
Mileage Estimates
- City driving: 15-17 miles per gallon (MPG).
- Highway driving: 20-22 miles per gallon (MPG).
- Combined average: 17-19 miles per gallon (MPG).
- Actual mileage may vary based on driving conditions.
Factors Affecting Fuel Economy
- Aggressive driving reduces fuel efficiency.
- Proper tire inflation improves mileage.
- Regular maintenance ensures optimal performance.
- Excessive idling consumes more fuel.
Fuel Tank and System
This section details the fuel tank capacity, system components, and maintenance tips for the 1998-2000 GMC Envoy.
Fuel Tank and System
This section details the fuel tank capacity, system components, and maintenance tips for the 1998-2000 GMC Envoy.
Fuel Tank Capacity
- Total fuel tank capacity: 21 gallons.
- Reserve fuel capacity: 2.5 gallons.
- Fuel gauge accuracy may vary under certain conditions.
- Always refuel before the tank is completely empty.
Fuel System Components
- Includes fuel pump, filter, and injectors.
- Fuel filter should be replaced every 30,000 miles.
- Fuel pump lifespan is typically 100,000 miles.
- Inspect fuel lines for leaks or damage regularly.
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Component Specifications
Overview
- Type
- Gasoline
- Configuration
- Multi-port fuel injection
- Platform
- GM GMT330 platform
- Material
- Steel and aluminum
- Location
- Underbody, rear-mounted
Dimensions
- Tank Capacity
- 21.0 gallons (79.5 liters)
- Tank Length
- 33.5 inches (85.1 cm)
- Tank Width
- 22.0 inches (55.9 cm)
- Tank Height
- 10.5 inches (26.7 cm)
- Fuel Line Diameter
- 0.375 inches (9.5 mm)
- Fuel Pump Pressure
- 55-62 psi (379-427 kPa)
- Filter Capacity
- 0.25 gallons (0.95 liters)
Materials
- Tank
- High-density polyethylene
- Fuel Lines
- Nitrile rubber with steel reinforcement
- Fuel Pump
- Stainless steel and plastic
- Filter
- Cellulose and resin
- Filler Neck
- Galvanized steel
Features
- Fuel Delivery
-
- Multi-port fuel injection
- Electric fuel pump
- Pressure regulator
- Returnless fuel system
- Monitoring
-
- Fuel level sensor
- Low fuel warning light
- Fuel mileage calculation
- Evaporative emissions control
- Safety
-
- Rollover valve
- Impact-resistant tank
- Fuel cutoff switch
- Maintenance
-
- Replaceable fuel filter
- Serviceable fuel pump
- Accessible fuel lines
- Emissions
-
- Evaporative emissions system
- OBD-II compliance
- Catalytic converter compatibility
Safety Features
- Tank Protection
-
- Impact-resistant design
- Rollover protection
- Fire Prevention
-
- Fuel cutoff switch
- Flame arrestor
- Leak Prevention
-
- Sealed fuel system
- Pressure monitoring
Comfort Features
- Refueling
-
- Easy-access filler neck
- Locking fuel cap
- Automatic shutoff nozzle
- Driving
-
- Smooth fuel delivery
- Quiet operation
- Consistent performance
- Maintenance
-
- Replaceable components
- Easy filter access
- Diagnostic port
Accessories
- Fuel Caps
-
- Locking fuel cap
- Vented fuel cap
- Non-vented fuel cap
- Filters
-
- Standard fuel filter
- High-performance filter
- Water-separating filter
- Additives
-
- Fuel injector cleaner
- Octane booster
- Fuel stabilizer
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Inspect fuel lines for leaks
- Replace fuel filter
- Check fuel pump pressure
- Inspect tank for damage
- Test fuel level sensor
- Notes
- Use only unleaded gasoline with a minimum octane rating of 87
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Fuel system components
- Corrosion
- Miles: 100,000Years: 6Coverage: Fuel tank
- Emissions
- Miles: 50,000Years: 4Coverage: Evaporative emissions system
- Terms
- Warranty void if using leaded gasoline or improper additives
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Injection molding for tank
- Robotic assembly for fuel lines
- Pressure testing for components
- Quality Control
- Leak Test: Pass/failPressure Test: 55-62 psiMaterial inspection: Visual and mechanical
- Sustainability Practices
-
- Recycled materials for tank
- Low-emission manufacturing
- Recycling program for old components
- Production Metrics
- Units Per Day: 500Defect Rate: 0.1%Energy Usage: Low
Service Information for fuel Service
Maintenance and service requirements specific to this component
- Inspect fuel lines for leaks
- Replace fuel filter
- Check fuel pump pressure
- Inspect tank for damage
- Test fuel level sensor
Ensure all connections are secure and free of corrosion
- Replace fuel filter
- Inspect fuel pump operation
- Check evaporative emissions system
- Test fuel pressure regulator
- Inspect filler neck and cap
Use OEM parts for replacements to ensure compatibility
- Replace fuel pump if necessary
- Inspect and clean fuel injectors
- Check for fuel tank corrosion
- Test entire fuel system for leaks
- Replace any worn or damaged components
Major service interval, may require specialized equipment
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What type of fuel is compatible with the 1998-2000 GMC Envoy?
What type of fuel is compatible with the 1998-2000 GMC Envoy?
The 1998-2000 GMC Envoy is compatible with unleaded gasoline with an octane rating of 87 or higher. Using premium fuel (91 octane or higher) is optional but not required. Diesel or E85 fuels are not compatible and may cause engine damage. Always refer to the owner's manual for specific fuel recommendations and avoid using fuel additives unless approved by GMC.
Q2 What are the maintenance requirements for the fuel system in a 1998-2000 GMC Envoy?
What are the maintenance requirements for the fuel system in a 1998-2000 GMC Envoy?
Regular maintenance for the fuel system includes inspecting the fuel filter every 30,000 miles and replacing it as needed. The fuel injectors should be cleaned every 15,000-30,000 miles to ensure optimal performance. Additionally, check for fuel leaks and ensure the fuel cap is securely tightened. Use high-quality fuel to prevent buildup in the fuel system and follow the maintenance schedule in the owner's manual.
Q3 How do I replace the fuel filter in a 1998-2000 GMC Envoy?
How do I replace the fuel filter in a 1998-2000 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, typically along the frame rail. Use a wrench to disconnect the fuel lines and remove the old filter. Install the new filter, ensuring the flow direction arrow points toward the engine. Reconnect the fuel lines and reinstall the fuel pump fuse. Start the engine and check for leaks.
Q4 What should I do if my 1998-2000 GMC Envoy has trouble starting or poor fuel efficiency?
What should I do if my 1998-2000 GMC Envoy has trouble starting or poor fuel efficiency?
If your GMC Envoy has trouble starting or poor fuel efficiency, first check the fuel filter for clogs and replace it if necessary. Inspect the fuel pump and fuel injectors for proper operation. Ensure the fuel cap is securely tightened and check for fuel leaks. If issues persist, use a diagnostic scanner to check for error codes and consult a professional mechanic for further troubleshooting.
Q5 How can I optimize the fuel performance of my 1998-2000 GMC Envoy?
How can I optimize the fuel performance of my 1998-2000 GMC Envoy?
To optimize fuel performance, use high-quality unleaded gasoline with the recommended octane rating. Regularly clean the fuel injectors and replace the fuel filter as needed. Maintain proper tire pressure and avoid excessive idling or aggressive driving. Keep the engine tuned and replace spark plugs and air filters according to the maintenance schedule. These steps will help improve fuel efficiency and overall performance.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1998-2000 GMC Envoy Service Manual
Coming SoonComprehensive guide covering maintenance, repairs, and technical specifications for the 1998-2000 GMC Envoy.
Technical Service Bulletin: Fuel System Updates
Coming SoonBulletin detailing updates and common issues related to the fuel system in 1998-2000 GMC Envoy models.
GMC Envoy Parts and Accessories Catalog
Coming SoonCatalog listing genuine GMC parts and accessories compatible with 1998-2000 Envoy models.
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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.
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