Pontiac Pontiac G5 2007-2010 Drivetrain Bolt Torque Specifications & Fastener Values
Pontiac Pontiac G5 2007-2010

Pontiac Pontiac G5 2007-2010 Drivetrain Bolt Torque Specifications

Detailed drivetrain bolt torque specifications for the 2007-2010 Pontiac G5, including transmission, driveshaft, and axle 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

Engine block and main bearings

This subsystem includes the main bearings that support the crankshaft and allow it to rotate smoothly.

1

Main Bearing Bolts

M14 x 1.5
Torque Value
63 ft-lbs (85 N·m)
Important Notes
Proper torque ensures the bearings are seated correctly and prevents damage to the engine.

Crankshaft and connecting rods

This subsystem includes the crankshaft and connecting rods that convert the up-and-down motion of the pistons into rotary motion.

1

Connecting Rod Nuts

M10 x 1.25
Torque Value
38 ft-lbs (52 N·m)
Important Notes
Proper torque ensures the rods are securely attached and prevents engine damage.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Proper torque ensures the pulley and balancer are securely attached and prevents engine damage.

Flywheel and clutch

This subsystem includes the flywheel that provides a smooth surface for the clutch to engage with.

1

Flywheel Bolts

M12 x 1.25
Torque Value
47 ft-lbs (64 N·m)
Important Notes
Proper torque ensures the flywheel is securely attached and prevents clutch slippage.

Transmission and mounts

This subsystem includes the transmission and mounts that help to reduce vibrations and noise.

1

Transmission Mounting Bolts

M12 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures the transmission is securely attached and prevents damage to the mounts.
2

Engine Block to Transmission Bellhousing Bolts

M14 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures the engine block and transmission are securely attached and prevents damage to the engine and transmission.

Drive axles and cv joints

This subsystem includes the drive axles and CV joints that transmit power to the wheels.

1

Drive Axle/Half Shaft Bolts

M16 x 1.5
Torque Value
111 ft-lbs (150 N·m)
Important Notes
Proper torque ensures the axles are securely attached and prevents damage to the transmission and differential.
2

CV Joint/Axle Nut

M20 x 1.5
Torque Value
118 ft-lbs (160 N·m)
Important Notes
Proper torque ensures the CV joint is securely attached and prevents damage to the axle and joint.

Propeller/drive shaft

This subsystem includes the propeller shaft that transmits power to the wheels.

1

Propeller/Drive Shaft Bolts

M14 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures the shaft is securely attached and prevents damage to the transmission and differential.

Differential and transfer case

This subsystem includes the differential and transfer case that transmit power to the wheels.

1

Differential Cover Bolts

M12 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures the cover is securely attached and prevents fluid leaks and damage to the differential.
2

Transfer Case to Transmission Bolts

M14 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures the transfer case and transmission are securely attached and prevents damage to the transmission and transfer case.

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 axle nut on a 2007-2010 Pontiac G5?

The axle nut torque specification for the 2007-2010 Pontiac G5 is typically 160 lb-ft (217 Nm). Always refer to the vehicle's service manual for the exact specification, as variations may exist depending on the drivetrain configuration.

Q2

How often should I check the torque on drivetrain bolts?

It is recommended to check the torque on drivetrain bolts during routine maintenance, such as oil changes or tire rotations, or after any work involving the drivetrain components. Additionally, inspect bolts if you notice unusual noises, vibrations, or handling issues.

Q3

Can I reuse drivetrain bolts after removal?

Some drivetrain bolts, such as axle nuts, are designed for one-time use and should be replaced after removal. Always consult the service manual to determine if a bolt is reusable or requires replacement. Reusing a torque-to-yield bolt can compromise safety and performance.

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 amount of torque to bolts and nuts

  • Digital display
  • Adjustable torque settings
Learn more

Socket Set

A set of sockets used to fit various bolt sizes

  • Metric and SAE sizes
  • Ratchet and extension included
Learn more

Breaker Bar

A long, flexible bar used to apply extra leverage to bolts and nuts

  • Chrome-moly steel construction
  • Comfort grip handle
Learn more
Service Procedures

Drivetrain Bolt Torque Specification

Procedure for applying the correct torque to drivetrain bolts

  • Locate the drivetrain bolts to be torqued
  • Apply the recommended torque using a torque wrench
  • Double-check the torque specification in the repair manual
View full procedure

Transmission Pan Removal

Procedure for removing the transmission pan to access drivetrain bolts

  • Raise the vehicle and support with jack stands
  • Remove the transmission pan bolts and gasket
  • Carefully lower the pan and remove from the transmission
View full procedure
Technical Service Bulletins

Drivetrain Bolt Over-Torquing

2008-07-15

A bulletin addressing the issue of over-torquing drivetrain bolts, leading to premature wear and failure

2007-2008 Pontiac G5 2009-2010 Pontiac G5 with manual transmission

Resolution: Inspect and re-torque drivetrain bolts to the recommended specification

Updated Torque Specification for Drivetrain Bolts

2010-01-01

A bulletin updating the recommended torque specification for drivetrain bolts

2007-2010 Pontiac G5

Resolution: Refer to the updated repair manual for the correct torque specification

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.

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