GMC Acadia 2007-2016 Fuel System Bolt Torque Specifications & Line Fittings
GMC Acadia 2007-2016

GMC Acadia 2007-2016 Fuel System Bolt Torque Specifications

Detailed torque specifications for the fuel system bolts on the 2007-2016 GMC Acadia, including fuel rail, fuel injector, and fuel tank mounting bolts.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

Fuel Rail System

The fuel rail system delivers fuel to the injectors and ensures proper fuel pressure. Components include the fuel rail, injectors, and associated mounting hardware.

1

Fuel Rail Bolts

M6 x 1.0
Torque Value
7.42 ft-lbs (10 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2

Fuel Injector Bolts

M6 x 1.0
Torque Value
7.42 ft-lbs (10 N·m)
Important Notes
Ensure injectors are properly seated before tightening.
3

Fuel Injector Rail Bolts

M6 x 1.0
Torque Value
7.42 ft-lbs (10 N·m)
Important Notes
Tighten in a crisscross pattern to ensure even pressure distribution.

Fuel Pump And Tank System

The fuel pump and tank system includes components such as the fuel pump, fuel tank, and associated mounting hardware. Proper torque ensures secure mounting and leak-free operation.

1

Fuel Pump Mounting Bolts

M8 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Ensure the fuel pump is properly seated before tightening.
2

Fuel Tank Strap Bolts

M8 x 1.25
Torque Value
35 ft-lbs (48 N·m)
Important Notes
Ensure the fuel tank is properly aligned before tightening.
3

Fuel Tank Sender Unit Bolts

M6 x 1.0
Torque Value
7.42 ft-lbs (10 N·m)
Important Notes
Ensure the sender unit is properly seated before tightening.

Fuel Delivery System

The fuel delivery system includes components such as the fuel filter, filler neck, and high-pressure fuel lines. Proper torque ensures leak-free connections and optimal fuel flow.

1

Fuel Filler Neck Bolts

M6 x 1.0
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure the filler neck is properly aligned before tightening.
2

Fuel Filter Bolt/Nut

M6 x 1.0
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure the filter housing is properly seated before tightening.
3

High-Pressure Fuel Line Fittings

M6 x 1.0
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure fittings are properly seated before tightening.
4

Fuel Line Clamp Bolts

M6 x 1.0
Torque Value
7.42 ft-lbs (10 N·m)
Important Notes
Ensure clamps are properly positioned before tightening.

Fuel Pressure Regulation System

The fuel pressure regulation system includes components such as the fuel pressure regulator and associated mounting hardware. Proper torque ensures consistent fuel pressure and leak-free operation.

1

Fuel Pressure Regulator Bolts

M6 x 1.0
Torque Value
7.42 ft-lbs (10 N·m)
Important Notes
Ensure the regulator is properly seated before tightening.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What is the torque specification for the fuel rail bolts on a 2007-2016 GMC Acadia?

The torque specification for the fuel rail bolts on a 2007-2016 GMC Acadia is typically 89 in-lbs (10 Nm). Always refer to the vehicle's service manual for the exact specifications, as variations may exist depending on the engine type or model year.

Q2

Can I reuse the fuel rail bolts after removal?

It is generally recommended to replace the fuel rail bolts after removal, as they are often torque-to-yield (TTY) bolts. Reusing TTY bolts can lead to improper torque and potential fuel leaks. Always check the service manual for specific recommendations.

Q3

What happens if I over-torque the fuel rail bolts?

Over-torquing the fuel rail bolts can damage the fuel rail, injectors, or the engine's intake manifold. This may cause fuel leaks, poor engine performance, or even a fire hazard. Always use a calibrated torque wrench and follow the manufacturer's specifications.

Q4

How often should I check the fuel system components for proper torque?

Fuel system components, including the fuel rail bolts, should be checked during routine maintenance or if you notice symptoms like fuel odor, poor engine performance, or visible leaks. Regular inspections every 30,000 miles or as recommended by the manufacturer are advisable.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Torque Wrench

A precision tool used to apply a specific torque to a fastener, such as fuel system bolts.

  • Adjustable torque settings
  • Calibrated for accuracy
Learn more

Fuel Line Disconnect Tool

A tool designed to safely disconnect fuel lines without causing damage.

  • Compatible with quick-connect fittings
  • Durable construction
Learn more

Socket Set

A set of sockets for use with a torque wrench to tighten fuel system bolts.

  • Includes metric sizes
  • Deep and shallow sockets
Learn more
Service Procedures

Fuel Rail Bolt Torque Specification

Procedure to properly torque the fuel rail bolts on a 2007-2016 GMC Acadia.

  • Disconnect the negative battery cable.
  • Relieve fuel system pressure using the fuel pressure relief valve.
  • Remove the fuel rail cover and disconnect the fuel lines using a fuel line disconnect tool.
  • Remove the fuel rail bolts using the appropriate socket.
  • Install the fuel rail and hand-tighten the bolts.
  • Torque the fuel rail bolts to 89 in-lbs (10 Nm) using a torque wrench.
  • Reconnect the fuel lines and fuel rail cover.
  • Reconnect the negative battery cable and test for leaks.
View full procedure

Fuel Pump Module Bolt Torque Specification

Procedure to properly torque the fuel pump module bolts on a 2007-2016 GMC Acadia.

  • Disconnect the negative battery cable.
  • Relieve fuel system pressure using the fuel pressure relief valve.
  • Remove the fuel tank and access the fuel pump module.
  • Remove the fuel pump module bolts using the appropriate socket.
  • Install the fuel pump module and hand-tighten the bolts.
  • Torque the fuel pump module bolts to 89 in-lbs (10 Nm) using a torque wrench.
  • Reinstall the fuel tank and reconnect the negative battery cable.
  • Test for leaks and ensure proper fuel system operation.
View full procedure
Technical Service Bulletins

Fuel System Leak at Fuel Rail

2012-05-15

Some 2007-2016 GMC Acadia models may experience fuel leaks at the fuel rail due to improper torque specifications.

2007-2016 GMC Acadia

Resolution: Ensure fuel rail bolts are torqued to 89 in-lbs (10 Nm) using a calibrated torque wrench.

Fuel Pump Module Noise or Leak

2014-08-22

Some 2007-2016 GMC Acadia models may exhibit noise or leaks from the fuel pump module due to loose bolts.

2007-2016 GMC Acadia

Resolution: Inspect and torque fuel pump module bolts to 89 in-lbs (10 Nm) using a calibrated torque wrench.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

Facebook Contact
15+ Years
Experience
500+ Guides
Guides
50+ Makes
Vehicles
1000+ Solutions
Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

  • ASE Master Technician Certification
  • Advanced Diagnostic Specialist
  • Hybrid/Electric Vehicle Systems
  • Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
Intellectual Property
All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.

© 2025 GMC Specs. All rights reserved.

Privacy Policy Terms of Service