GMC Acadia 2007-2016 Drivetrain Bolt Torque Specifications & Fastener Values
GMC Acadia 2007-2016

GMC Acadia 2007-2016 Drivetrain Bolt Torque Specifications

Detailed torque specifications for the drivetrain components of the 2007-2016 GMC Acadia, including transmission, driveshaft, and differential 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 Transmission Interface

Components that connect the engine to the transmission, ensuring proper alignment and power transfer.

1

Flywheel Bolts

M10 x 1.25
Torque Value
41 ft-lbs (55 N·m)
Important Notes
Ensure bolts are tightened in a star pattern to evenly distribute torque.
2

Transmission Bellhousing Bolts

M10 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Ensure bellhousing is properly aligned before tightening.

Transmission Mounting

Components that secure the transmission to the vehicle frame, ensuring stability and alignment.

1

Transmission Mounting Bolts

M10 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Ensure transmission is properly supported before tightening.
2

Transmission Crossmember Bolts

M10 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Ensure crossmember is properly aligned before tightening.

Driveshaft Axles

Components that transmit power from the transmission to the wheels, ensuring proper connection and alignment.

1

Drive Axle/Half Shaft Bolts

M12 x 1.5
Torque Value
118 ft-lbs (160 N·m)
Important Notes
Ensure axle is properly seated before tightening.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Value
185 ft-lbs (251 N·m)
Important Notes
Ensure CV joint is properly seated before tightening.
3

Propeller/Drive Shaft Bolts

M10 x 1.25
Torque Value
41 ft-lbs (55 N·m)
Important Notes
Ensure drive shaft is properly aligned before tightening.

Fluid Management

Components that manage fluid levels and seals in the transmission, differential, and transfer case.

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Value
8.1 ft-lbs (11 N·m)
Important Notes
Ensure oil pan gasket is properly seated before tightening.
2

Transmission Drain and Fill Plugs

M12 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Ensure plugs are properly seated before tightening.
3

Differential Drain/Fill Plug

M12 x 1.5
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure plugs are properly seated before tightening.
4

Transfer Case Drain/Fill Plug

M12 x 1.5
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure plugs are properly seated before tightening.

Transfer Case

Components that manage power distribution in all-wheel-drive or four-wheel-drive vehicles.

1

Transfer Case Mounting Bolts

M10 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Ensure transfer case is properly aligned before tightening.
2

Transfer Case Output Shaft Flange Bolts

M10 x 1.25
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Ensure flange is properly seated before tightening.

Differential

Components that manage power distribution to the wheels, ensuring proper alignment and lubrication.

1

Differential Cover Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure differential cover gasket 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 front differential mounting bolts on a 2007-2016 GMC Acadia?

The front differential mounting bolts should be torqued to 74 lb-ft (100 Nm). Ensure the bolts are tightened in a crisscross pattern to evenly distribute the load and prevent misalignment.

Q2

How often should I check the torque on drivetrain components?

It is recommended to check the torque on drivetrain components, such as differential bolts and driveshaft fasteners, every 30,000 miles or after any significant impact or repair. Regular inspections help prevent loosening due to vibration and wear.

Q3

Can I reuse the same bolts when reassembling the drivetrain?

It is generally not recommended to reuse bolts, especially torque-to-yield (TTY) bolts, as they may lose their clamping force. Always refer to the manufacturer's guidelines and replace bolts if specified.

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 a bolt or nut.

  • Adjustable torque settings
  • Calibrated for accuracy
Learn more

Socket Set

A set of sockets in various sizes to fit different bolt heads.

  • Includes both metric and standard sizes
  • Durable construction
Learn more

Thread Locker

A chemical compound used to secure threaded fasteners.

  • Prevents loosening due to vibration
  • Available in different strengths
Learn more
Service Procedures

Drivetrain Bolt Torque Specifications

Procedure to ensure proper torque application for drivetrain bolts on a 2007-2016 GMC Acadia.

  • Locate the drivetrain bolts requiring torque application.
  • Clean the bolt threads and apply thread locker if specified.
  • Set the torque wrench to the specified torque value for the bolt.
  • Tighten the bolt to the specified torque in a crisscross pattern if multiple bolts are present.
  • Double-check the torque settings and ensure all bolts are properly tightened.
View full procedure
Technical Service Bulletins

Drivetrain Bolt Loosening Issue

2012-05-15

Some 2007-2012 GMC Acadia models may experience drivetrain bolt loosening due to insufficient torque or vibration.

2007-2012 GMC Acadia

Resolution: Inspect and retorque all drivetrain bolts to the manufacturer's specifications. Apply thread locker if necessary.

Drivetrain Noise and Vibration

2014-08-22

Reports of drivetrain noise and vibration in 2010-2014 GMC Acadia models due to improperly torqued bolts.

2010-2014 GMC Acadia

Resolution: Verify torque specifications for all drivetrain bolts and retorque as needed. Replace any damaged bolts or components.

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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  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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