Pontiac Pontiac G8 2008-2009 Fuel System Specifications
Pontiac Pontiac G8 2008-2009

Pontiac Pontiac G8 2008-2009 Fuel System Specifications

Discover detailed fuel specifications for the 2008-2009 Pontiac G8, including fuel type, tank capacity, economy, and emission standards. Essential for maintenance, repair, and performance upgrades.

Updated

Overview Specifications

This document provides detailed fuel specifications for the 2008-2009 Pontiac G8. It includes information on fuel type, efficiency, capacity, and related technical details. Use this guide to understand the vehicle's fuel requirements and performance. The document is organized into sections for easy navigation, with a quick reference table for key specifications.

How to Use

Use the search function to find specific terms or phrases within the document. Enter keywords related to fuel specifications, such as 'fuel type' or 'mileage,' to quickly locate relevant information.

Navigate through the document using the section titles and subsections. Each section is labeled clearly, and subsections provide detailed points. Use the quick reference table for a summary of key specifications.

Key Specifications

Fuel Type

Premium Unleaded

Octane Rating

91 AKI

City Mileage

15 MPG

Highway Mileage

24 MPG

Tank Capacity

19.1 gallons

Available Specifications

Fuel Type and Requirements

This section covers the type of fuel recommended for the 2008-2009 Pontiac G8, including octane ratings and any specific requirements for optimal performance.

Recommended Fuel Type
  • Premium unleaded gasoline is recommended for optimal performance.
  • Minimum octane rating of 91 (AKI) is required.
  • Using lower octane fuel may reduce engine performance.
  • Ethanol blends up to E10 are acceptable.
Fuel Additives
  • Avoid using fuel additives unless approved by the manufacturer.
  • Additives may affect emissions and engine performance.
  • Regular maintenance is preferred over aftermarket additives.

Fuel Efficiency

This section provides details on the fuel efficiency of the 2008-2009 Pontiac G8, including city and highway mileage estimates.

City Mileage
  • Estimated city mileage: 15 MPG.
  • Actual mileage may vary based on driving conditions.
  • Heavy traffic and frequent stops reduce efficiency.
Highway Mileage
  • Estimated highway mileage: 24 MPG.
  • Steady driving at moderate speeds improves efficiency.
  • Aerodynamics and tire pressure impact highway mileage.

Fuel Tank Capacity

This section outlines the fuel tank capacity and related details for the 2008-2009 Pontiac G8.

Tank Capacity
  • Fuel tank capacity: 19.1 gallons.
  • Reserve fuel capacity: Approximately 2.5 gallons.
  • Low fuel warning light activates when reserve is reached.
Refueling Tips
  • Refuel before the tank is completely empty to avoid engine issues.
  • Use the correct fuel grade for optimal performance.
  • Check for fuel leaks or damage during refueling.

Component Specifications

Overview

Type
Gasoline
Configuration
V6 or V8 engine
Platform
GM Zeta platform
Material
High-grade steel
Location
Rear of vehicle

Dimensions

Tank Capacity
18.5 gallons (70 liters)
Tank Length
32 inches (81.3 cm)
Tank Width
24 inches (61 cm)
Tank Height
12 inches (30.5 cm)
Filler Neck Diameter
1.5 inches (3.8 cm)
Fuel Line Diameter
0.5 inches (1.3 cm)
Fuel Pump Pressure
58 psi (4 bar)

Materials

Tank Body
High-density polyethylene
Filler Neck
Stainless steel
Fuel Lines
Nitrile rubber
Fuel Pump
Aluminum alloy

Features

Fuel Delivery
  • Electronic fuel injection
  • Sequential multi-port fuel injection
  • High-pressure fuel pump
Tank Features
  • Internal baffles for fuel stability
  • Rust-resistant coating
  • Leak detection system
Sensors
  • Fuel level sensor
  • Fuel pressure sensor
  • Temperature sensor
Emissions
  • Evaporative emissions control
  • Carbon canister
  • Vapor recovery system
Safety
  • Rollover valve
  • Impact-resistant tank
  • Fuel cut-off switch

Safety Features

Tank Protection
  • Shielded fuel tank
  • Impact-resistant material
Leak Prevention
  • Double-sealed fuel lines
  • Automatic fuel shut-off
Fire Prevention
  • Flame arrestor
  • Thermal insulation

Comfort Features

Refueling
  • Easy-access fuel filler
  • Locking fuel cap
Fuel Economy
  • Efficient fuel consumption
  • Onboard fuel economy display
Noise Reduction
  • Quiet fuel pump operation
  • Vibration-dampened tank

Accessories

Fuel Caps
  • Locking fuel cap
  • Vented fuel cap
  • Quick-release fuel cap
Fuel Additives
  • Fuel system cleaner
  • Octane booster
  • Fuel stabilizer
Monitoring
  • Fuel level gauge
  • Fuel consumption monitor
  • Pressure indicator

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
Maintenance Notes
Use only recommended fuel grade and additives

Warranty

Basic Warranty
Miles: 36,000
Years: 3
Coverage: Bumper to bumper
Powertrain Warranty
Miles: 60,000
Years: 5
Coverage: Engine and transmission
Emissions Warranty
Miles: 80,000
Years: 8
Coverage: Emissions control system
Corrosion Warranty
Miles: 100,000
Years: 6
Coverage: Perforation from corrosion

Production Details

Manufacturer
General Motors
Manufacturing Process
  • Injection molding for tank
  • Robotic assembly for fuel lines
  • Precision machining for pump
Quality Control
Pressure Testing: Yes
Leak Testing: Yes
Material inspection: Yes
Sustainability Practices
  • Recycled materials in tank
  • Low-emission manufacturing
  • Waste reduction initiatives
Production Metrics
Units Produced: 50,000 annually
Defect Rate: 0.1%
Energy Consumption: Low

Service Information for fuel Service

Maintenance and service requirements specific to this component

30,000
24
  • Inspect fuel lines for leaks
  • Replace fuel filter
  • Check fuel pump pressure
  • Inspect tank for damage
  • Test fuel level sensor

Use only recommended fuel grade and additives

60,000
48
  • Replace fuel pump
  • Inspect and clean injectors
  • Check fuel pressure regulator
  • Test evaporative emissions system

Special tools required for fuel pump replacement

100,000
84
  • Replace fuel tank
  • Inspect and replace fuel lines
  • Test entire fuel system
  • Replace all sensors

Critical to replace all components to ensure safety and performance

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel is compatible with the 2008-2009 Pontiac G8?

The 2008-2009 Pontiac G8 is designed to run on regular unleaded gasoline with an octane rating of 87 or higher. For optimal performance, especially in the G8 GT and GXP models, premium unleaded gasoline with an octane rating of 91 or higher is recommended. Using the correct fuel type ensures proper engine function, efficiency, and longevity. Always refer to the owner's manual for specific fuel requirements and avoid using fuels with ethanol content higher than 10% unless specified.

Q2

What are the maintenance requirements for the 2008-2009 Pontiac G8 fuel system?

The fuel system of the 2008-2009 Pontiac G8 requires regular maintenance to ensure optimal performance. It is recommended to inspect the fuel filter every 30,000 miles and replace it as needed. The fuel injectors should be cleaned every 15,000 to 30,000 miles to prevent clogging and maintain fuel efficiency. Additionally, using high-quality fuel additives periodically can help keep the fuel system clean. Always follow the maintenance schedule provided in the owner's manual and consult a professional for any concerns.

Q3

How do I replace the fuel filter in a 2008-2009 Pontiac G8?

To replace the fuel filter in a 2008-2009 Pontiac G8, first, ensure the vehicle is on a flat surface and the engine is cool. Locate the fuel filter, typically found along the fuel line near the rear of the vehicle. Relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls. Disconnect the negative battery terminal. Use a wrench to remove the fuel lines from the filter, then unbolt the filter from its mounting bracket. Install the new filter, reconnect the fuel lines, and secure it in place. Reconnect the battery and fuel pump fuse, then start the engine to check for leaks.

Q4

What should I do if my 2008-2009 Pontiac G8 is experiencing fuel delivery issues?

If your 2008-2009 Pontiac G8 is experiencing fuel delivery issues, start by checking the fuel pump fuse and relay. Inspect the fuel filter for clogs and replace it if necessary. Test the fuel pressure using a gauge to ensure the fuel pump is functioning correctly. If the pump is faulty, it may need replacement. Additionally, check the fuel injectors for clogs or malfunctions and clean or replace them as needed. If the issue persists, consult a professional mechanic for a thorough diagnostic and repair.

Q5

How can I optimize the fuel efficiency of my 2008-2009 Pontiac G8?

To optimize the fuel efficiency of your 2008-2009 Pontiac G8, ensure regular maintenance of the fuel system, including cleaning injectors and replacing the fuel filter as needed. Use the recommended fuel type and avoid aggressive driving habits such as rapid acceleration and hard braking. Keep tires properly inflated and align the wheels to reduce rolling resistance. Reduce vehicle weight by removing unnecessary items and use cruise control on highways to maintain a consistent speed. Following these tips can help improve fuel economy 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.

2008-2009 Pontiac G8 Owner's Manual

Coming Soon

The owner's manual provides detailed information on vehicle operation, maintenance schedules, and technical specifications for the 2008-2009 Pontiac G8.

Technical Service Bulletin: Fuel System Updates

Coming Soon

This bulletin outlines updates and service recommendations for the fuel system of the 2008-2009 Pontiac G8, including common issues and solutions.

Pontiac G8 Parts and Accessories Catalog

Coming Soon

The catalog provides a comprehensive list of OEM and aftermarket parts and accessories available for the 2008-2009 Pontiac G8, including fuel system components.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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