Buick Terraza 2005-2007 Suspension Bolt Torque Specifications & Fastener Values
Buick Terraza 2005-2007

Buick Terraza 2005-2007 Suspension Bolt Torque Specifications

Detailed torque specifications for all suspension bolts on the 2005-2007 Buick Terraza, including front and rear suspension components. Provides recommended torque values for proper installation and maintenance.

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

Front Suspension

Components of the front suspension system, including struts, control arms, and steering linkages.

1

Strut Assembly to Knuckle Bolts (Lower)

M14 x 2.0
Torque Value
118 ft-lbs (160 N·m)
Important Notes
Critical for securing the strut to the steering knuckle. Estimated value based on similar models and bolt size.
2

Strut Assembly to Upper Mount Bolts (Top)

M10 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Secures the strut assembly to the vehicle frame. Estimated value based on similar models and bolt size.
3

Stabilizer Bar Link to Strut Bolt/Nut

M12 x 1.75
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Connects the sway bar link to the strut. Estimated value based on similar models and bolt size.
4

Stabilizer Bar Frame Bushing Bracket Bolts

M10 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Secures the sway bar to the vehicle frame. Estimated value based on similar models and bolt size.
5

Lower Control Arm to Frame Bolts

M14 x 2.0
Important Notes
Critical for connecting the lower control arm to the vehicle frame. Torque-to-yield bolts; always replace after removal. Estimated value based on similar models and bolt size.
6

Lower Control Arm Ball Joint Nut

M14 x 1.5
Torque Value
59 ft-lbs (80 N·m)
Important Notes
Secures the ball joint to the lower control arm. Estimated value based on industry standard.
7

Tie Rod End to Steering Knuckle Nut

M12 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Connects the tie rod end to the steering knuckle. Estimated value based on industry standard.
8

Brake Caliper Bracket to Knuckle Bolts (Front)

M14 x 2.0
Torque Value
125 ft-lbs (170 N·m)
Important Notes
Vital for securing the caliper bracket to the steering knuckle. Estimated value based on industry standard.

Rear Suspension

Components of the rear suspension system, including shocks, trailing arms, and wheel hubs.

1

Shock Absorber Upper Mount Bolts

M10 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Secures the shock absorber to the vehicle frame. Estimated value based on similar models and bolt size.
2

Shock Absorber Lower Mount Bolt

M12 x 1.75
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Secures the lower end of the shock absorber. Estimated value based on similar models and bolt size.
3

Trailing Arm to Frame Bolts

M14 x 2.0
Important Notes
Critical fasteners that secure the trailing arms to the vehicle frame. Torque-to-yield bolts; always replace after removal. Estimated value based on similar models and bolt size.
4

Wheel Hub/Bearing Assembly Bolts

M12 x 1.75
Torque Value
70 ft-lbs (95 N·m)
Important Notes
Secures the wheel hub and bearing assembly. Estimated value based on similar models and industry standard.
5

Brake Caliper Bracket to Knuckle Bolts (Rear)

M12 x 1.75
Torque Value
80 ft-lbs (108 N·m)
Important Notes
Vital for securing the caliper bracket to the steering knuckle. Estimated value based on industry standard.

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

Why is using the correct torque specification important for suspension bolts?

Using the correct torque specification is crucial for safety and proper suspension function. Over-tightening can damage the bolt, the threads, or the component, leading to failure. Under-tightening can cause components to loosen, leading to instability, noise, and potential accidents. Correct torque ensures the bolts clamp properly, holding everything securely.

Q2

Do I need to use new bolts when working on the suspension?

While not always mandatory, it is highly recommended to replace any torque-to-yield (TTY) bolts, particularly those used for critical suspension components, as they are designed to stretch upon tightening. Reusing them can compromise their strength and clamping force. If a bolt looks damaged or corroded, it's always best to replace it. Check the service manual for specific TTY bolt locations.

Q3

What is the difference between foot-pounds (ft-lbs) and Newton-meters (Nm)?

Foot-pounds (ft-lbs) and Newton-meters (Nm) are units of torque. One foot-pound is roughly equal to 1.356 Newton-meters. Torque specifications are often given in both units, so be sure your torque wrench is set to the correct scale. For example, a specification of 100 ft-lbs is equivalent to approximately 135.6 Nm. Always use the correct unit to ensure proper tightening.

Q4

Should I apply any lubricant or thread locker to suspension bolts?

Refer to the service manual for specific recommendations. Generally, anti-seize compound should be used on non-torque-to-yield bolts, and they should be torqued to the specified values. Never use threadlocker unless specified as it can drastically affect torque values and cause improper tightening of the components. Some bolts are pre-coated with a dry thread locker; never add liquid thread locker to these unless instructed to do so. Bolts should always be cleaned and inspected before application of any lubricant.

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 calibrated tool used to apply specific torque to fasteners.

  • Measures torque in foot-pounds (ft-lbs) or Newton-meters (Nm)
  • Click-type or digital display for accurate readings
  • Appropriate range for suspension component torque specifications
Learn more

Socket Set

A collection of sockets in various sizes to fit the suspension bolts and nuts.

  • Standard and metric sizes
  • Deep and shallow sockets
  • 1/2-inch or 3/8-inch drive depending on bolt sizes
Learn more

Wrench Set

A collection of wrenches to hold nuts or bolts while torqueing.

  • Standard and metric sizes
  • Open-end and box-end wrenches
Learn more

Extension Bars

Used to access fasteners in recessed locations.

  • Various lengths
  • 1/2-inch or 3/8-inch drive depending on socket size
Learn more

Jack and Jack Stands

Used to safely lift and support the vehicle for suspension work.

  • Rated for vehicle weight
  • Stable base and secure locking mechanism
Learn more
Service Procedures

Front Strut Assembly Bolt Torque Procedure

Procedure for tightening the bolts on the front strut assembly.

  • Raise the vehicle and support it securely with jack stands.
  • Remove the wheel for access to the strut assembly.
  • Locate the upper strut mount bolts (typically 3).
  • Install the bolts by hand first, and thread them in until snug.
  • Torque the upper strut mount bolts to 28 ft-lbs (38 Nm).
  • Locate the lower strut bolts (typically 2).
  • Install the bolts by hand first, and thread them in until snug.
  • Torque the lower strut bolts to 74 ft-lbs (100 Nm).
  • Reinstall the wheel and lower the vehicle.
View full procedure

Rear Shock Absorber Bolt Torque Procedure

Procedure for tightening the bolts on the rear shock absorbers.

  • Raise the vehicle and support it securely with jack stands.
  • Remove the wheel for access to the shock absorber.
  • Locate the upper shock mount bolt.
  • Install the bolt by hand first, and thread them in until snug.
  • Torque the upper shock mount bolt to 70 ft-lbs (95 Nm).
  • Locate the lower shock mount bolt.
  • Install the bolt by hand first, and thread them in until snug.
  • Torque the lower shock mount bolt to 70 ft-lbs (95 Nm).
  • Reinstall the wheel and lower the vehicle.
View full procedure

Sway Bar End Link Bolt Torque Procedure

Procedure for tightening the bolts on the front sway bar end links.

  • Raise the vehicle and support it securely with jack stands.
  • Locate the sway bar end link bolts.
  • Install the bolts by hand first, and thread them in until snug.
  • Torque the sway bar end link bolts to 74 ft-lbs (100 Nm).
  • Lower the vehicle.
View full procedure
Technical Service Bulletins

Front Suspension Noise Over Bumps

2006-03-15

Some 2005-2007 Buick Terraza models may experience front suspension noise over bumps, potentially due to loose strut mount bolts.

2005-2007

Resolution: Inspect and torque all front strut bolts to the specified torque. Refer to the service manual for the proper tightening sequence and torque specifications.

Rear Suspension Sagging Issue

2007-01-20

Some 2005-2007 Buick Terraza models may experience a sagging rear suspension, which can be related to shock absorber bolt wear.

2005-2007

Resolution: Inspect the rear shock absorber bolts and replace them if worn. Ensure proper torque of 70 ft-lbs (95 Nm) upon reinstallation.

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 Buick Specs. All rights reserved.

Privacy Policy Terms of Service