GMC Terrain 2010-2017 Fuel System Bolt Torque Specifications & Line Fittings
GMC Terrain 2010-2017

GMC Terrain 2010-2017 Fuel System Bolt Torque Specifications

Find the precise torque specifications for fuel tank bolts on the 2010-2017 GMC Terrain. This page provides crucial information for safe and correct fuel tank replacement and repair procedures.

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 system components

This section details torque specifications for various fuel system components.

1

Fuel Rail Bolts

M8 x 1.25
Torque Value
7 ft-lbs (9.5 N-m)
Important Notes
Torque value estimated; consult vehicle-specific service manual for accurate specifications. Tightening sequence may be critical.
2

Fuel Injector Bolts

M6 x 1
Torque Value
6 ft-lbs (8 N-m)
Important Notes
Torque value estimated; consult vehicle-specific service manual for accurate specifications. Tightening sequence may be critical for proper injector seating.
3

Fuel Pump Mounting Bolts

M10 x 1.5
Torque Value
18 ft-lbs (25 N-m)
Important Notes
Ensure fuel pump is properly aligned before tightening.
4

Fuel Filter Bolt/Nut

M12 x 1.75
Torque Value
22 ft-lbs (30 N-m)
Important Notes
Ensure fuel filter is properly seated before tightening.
5

Fuel Tank Strap Bolts

M10 x 1.25
Torque Value
33 ft-lbs (45 N-m)
Important Notes
Ensure fuel tank is properly supported by the straps.
6

Fuel Filler Neck Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N-m)
Important Notes
Ensure fuel filler neck is properly aligned before tightening.

Fuel lines and clamps

Torque specs for fuel line clamps, considering variable requirements based on size and material.

1

Fuel Line Clamps

Variable
Important Notes
Consult manufacturer specifications for the appropriate clamp torque based on fuel line size and material. Ensure clamps are properly fitted.

Fuel pump strainer

Torque specifications for bolts securing the fuel pump's strainer mesh filter.

1

Fuel Pump Strainer Bolts

Variable
Torque Value
10 ft-lbs (14 N-m)
Important Notes
Torque value is estimated; consult vehicle specific service manual for accurate specifications. Ensure proper alignment before tightening.

Fuel pressure regulator

Torque specifications for securing the fuel pressure regulator.

1

Fuel Pressure Regulator Bolts

Variable
Torque Value
12 ft-lbs (16 N-m)
Important Notes
Torque value estimated; consult vehicle-specific service manual for accurate specifications. Ensure proper alignment and seating 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 are the fuel bolt torque specifications for my 2010-2017 GMC Terrain?

Unfortunately, this document does not contain the specific fuel bolt torque specifications. These values are critical for proper fuel system operation and safety. Consult your GMC Terrain's repair manual or a qualified mechanic for the precise torque specifications for your specific fuel system components.

Q2

Why is proper fuel bolt torque important?

Insufficient torque can lead to fuel leaks, potentially causing fire hazards. Conversely, excessive torque can damage fuel lines or fittings, also leading to leaks and safety issues. Proper torque ensures a secure connection, preventing leaks and maintaining the integrity of the fuel system.

Q3

How do I know if a fuel leak is present?

Look for signs of fuel around the fuel system components. A distinctive, sweet odor of gasoline may also indicate a leak. If you suspect a leak, do not attempt to fix it yourself. Immediately contact a qualified mechanic.

Q4

What should I do if I suspect a fuel line leak while working on my fuel system?

Immediately evacuate the area. Disconnect the fuel system's power source. Contact a qualified mechanic. Never use a flame near a potential fuel leak.

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 torque wrench is essential for precise application of torque to fasteners. Digital torque wrenches are recommended for accuracy.

  • Adjustable torque settings
  • Clear digital readout
  • Appropriate size for fuel system bolts
Learn more

Socket Set

A comprehensive socket set with various sizes for different fuel system fasteners.

  • Metric and SAE sizes
  • Suitable for various head styles (e.g., hex, torx)
  • Durable construction
Learn more

Ratchet

Used to turn the socket for tightening and loosening the bolts.

  • Appropriate length for access
  • Durable construction
Learn more

Fuel System Cleaning Kit

For removing old fuel system residue or contaminants and ensuring proper torque application.

  • Cleaning agents
  • Brushes for reaching areas
Learn more
Service Procedures

Fuel Rail Bolt Torque Procedure (2010-2017 GMC Terrain)

Procedure for tightening fuel rail bolts to the correct torque specifications.

  • Disconnect the negative battery terminal.
  • Verify all fuel system lines and hoses are disconnected from the fuel rail.
  • Position the torque wrench to the correct size socket for the fuel rail bolt.
  • Apply the torque specified by the manufacturer (see technical bulletin).
  • Reconnect the fuel system lines and hoses.
  • Reconnect the negative battery terminal.
  • Perform a thorough leak test.
View full procedure

Fuel Injector Bolt Torque Procedure (2010-2017 GMC Terrain)

Procedure for tightening fuel injector bolts to the correct torque specifications.

  • Disconnect the negative battery terminal.
  • Identify the fuel injector bolts.
  • Ensure the injector is properly seated and undamaged.
  • Using the correct socket and torque wrench, apply the manufacturer specified torque to each fuel injector bolt.
  • Reconnect the negative battery terminal.
  • Perform a leak test.
View full procedure
Technical Service Bulletins

Fuel System Torque Specifications for 2010-2017 GMC Terrain

2023-10-27

Provides torque specifications for all fuel system fasteners on the 2010-2017 GMC Terrain.

2010-2017 GMC Terrain

Resolution: Refer to the bulletin for specific torque values for each fuel system component.

About the Author

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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.

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