Buick Verano 2012-2017 Suspension Bolt Torque Specifications & Fastener Values
Buick Verano 2012-2017

Buick Verano 2012-2017 Suspension Bolt Torque Specifications

This page provides a comprehensive list of torque specifications for all suspension bolts on the 2012-2017 Buick Verano. Includes front and rear suspension components.

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

This section includes torque specifications for the front suspension components, including struts, control arms, and steering linkages. Proper torque application is critical for vehicle handling and safety.

1

Strut-to-Steering Knuckle Bolts

M12 x 1.75
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Estimated value based on similar vehicles and bolt size. These bolts connect the strut to the steering knuckle.
2

Strut Mount to Body Bolts (Upper Mount)

M10 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Estimated value. These bolts secure the strut assembly to the vehicle's body.
3

Sway Bar Link to Strut Bolt

M10 x 1.5
Torque Value
48 ft-lbs (65 N·m)
Important Notes
Estimated value. These secure the sway bar link to the strut assembly.
4

Sway Bar Link to Sway Bar Bolt

M10 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Estimated value. These connect the sway bar to the sway bar link.
5

Sway Bar Bracket Bolts to Frame

M8 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Estimated value. Secures the sway bar brackets to the chassis.
6

Lower Control Arm Ball Joint Pinch Bolt

M12 x 1.75
Important Notes
Critical fastener. Estimated bolt size. Follow the torque-angle sequence.
7

Lower Control Arm to Frame Bolts

M14 x 2.0
Torque Value
92 ft-lbs (125 N·m)
Important Notes
Estimated value. These bolts secure the control arm to the frame.
8

Tie Rod End Jam Nut

M14 x 1.5
Torque Value
59 ft-lbs (80 N·m)
Important Notes
Estimated value. Secures the tie rod end in position.
9

Axle Nut

M24 x 2.0
Torque Value
155 ft-lbs (210 N·m)
Important Notes
Estimated value. Critical for wheel hub assembly retention.
10

Brake Caliper Mounting Bolts

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Estimated value, secures caliper to bracket.
Page 1 of 2

Rear Suspension

This section provides torque specifications for the rear suspension components. Proper torque is crucial for rear-end stability and alignment.

1

Shock Absorber Lower Bolt

M12 x 1.75
Torque Value
70 ft-lbs (95 N·m)
Important Notes
Estimated value. Attaches the shock to the lower control arm or axle.
2

Shock Absorber Upper Bolt

M10 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Estimated value. Secures the upper portion of the shock to the frame.
3

Rear Lower Control Arm to Body Bolts

M12 x 1.75
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Estimated value. Secures the lower control arm to the body.
4

Rear Upper Control Arm to Body Bolts

M12 x 1.75
Torque Value
63 ft-lbs (85 N·m)
Important Notes
Estimated value. Secures the upper control arm to the frame.
5

Rear Trailing Arm Bolt

M12 x 1.75
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Estimated value. Attaches the trailing arm to the chassis.
6

Rear Wheel Hub/Bearing Mounting Bolts

M12 x 1.75
Torque Value
59 ft-lbs (80 N·m)
Important Notes
Estimated value. Connects the hub assembly to the rear knuckle.
7

Rear Brake Caliper Mounting Bolts

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Estimated value. Secure the caliper to the bracket.
8

Rear Brake Caliper Bracket Bolts

M12 x 1.75
Torque Value
59 ft-lbs (80 N·m)
Important Notes
Estimated value. Secures bracket to the knuckle.

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 it important to use the correct torque specifications for suspension bolts?

Using the correct torque specification is crucial for the safety and performance of your vehicle. Over-tightening can damage bolts, threads, or suspension components, leading to failure or premature wear. Under-tightening can cause components to loosen over time, resulting in instability, noise, and even loss of control. Correct torque ensures the proper clamping force is applied, maintaining joint integrity and preventing movement. For example, if a control arm bolt is not torqued correctly, it can cause alignment issues, tire wear, and unsafe driving conditions.

Q2

What happens if I overtighten a suspension bolt?

Overtightening can stretch or weaken the bolt, causing it to potentially fail under stress. It can also damage the threads on the bolt or the receiving component, making it difficult to remove or reuse the bolt. Additionally, over-torquing can deform bushings or mounting points leading to premature wear of the part. A scenario could be over-torquing a strut mount bolt, potentially leading to cracked mounts or damaged studs.

Q3

Can I reuse suspension bolts?

Generally, it is recommended to replace critical suspension bolts when they are removed. This is because many suspension bolts are designed to stretch slightly when torqued to their proper specification. This 'stretch' can weaken the bolt if it is reused, leading to potential failure. Always refer to the vehicle's service manual to determine which bolts must be replaced. For example, torque-to-yield bolts should never be reused. Using a fresh bolt ensures the correct clamping force is applied and reduces the risk of failure.

Q4

How often should I check the torque on my suspension components?

It's a good practice to recheck the torque on suspension components after driving about 50-100 miles after performing any work, as components may settle or shift. After that, it is generally recommended to check suspension components as part of your regular vehicle maintenance schedule, such as during your tire rotations. It can also be a good idea to check suspension bolts after a major impact or incident like hitting a curb. Regular visual inspections for damage to the bushings or other components can also indicate a need to check torque values.

Q5

What tools do I need to properly torque suspension bolts?

You will need a calibrated torque wrench appropriate for the range of torque specifications you will be using for your vehicle. A variety of sockets, usually in both standard and metric sizes, will be required. It's also helpful to use an extension if bolts are difficult to reach. Make sure to use a quality torque wrench and always consult the vehicle's service manual for the exact bolt size and torque specification. Avoid using impact guns for tightening, as they are not precise enough and can lead to damage. If you are unfamiliar with using a torque wrench it is highly recommended you consult a qualified professional.

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 (1/2-inch drive)

A calibrated torque wrench is essential for accurately tightening suspension bolts to the manufacturer's specifications, ensuring proper clamping force and preventing damage.

  • Click-type mechanism for precise torque application
  • Wide torque range to cover various suspension bolt sizes
  • Durable construction for long-term use
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets is needed to fit the various bolt and nut sizes on the Verano's suspension.

  • Wide range of sizes (e.g., 10mm, 13mm, 15mm, 16mm, 18mm, 21mm)
  • 6-point sockets for better grip and reduced slippage
  • Durable material such as chrome vanadium steel
Learn more

Wrench Set (Metric)

A set of metric wrenches is needed for holding bolts while tightening nuts.

  • Wide range of sizes (e.g., 10mm, 13mm, 15mm, 16mm, 18mm, 21mm)
  • Combination wrenches for versatility
  • Durable material such as chrome vanadium steel
Learn more

Extensions and Adapters

Extensions and adapters provide access to recessed bolts in the suspension system.

  • Various lengths of extensions
  • Swivel adapters for difficult angles
  • Durable material for heavy use
Learn more
Service Procedures

Front Strut Assembly Removal and Installation

This procedure outlines the steps for removing and reinstalling the front strut assembly, including torque specifications for critical bolts.

  • Loosen lug nuts on the front wheel.
  • Raise and support the vehicle securely.
  • Remove the front wheel.
  • Disconnect the ABS sensor wire (if applicable).
  • Disconnect the sway bar link from the strut.
  • Remove the brake caliper and secure it out of the way.
  • Remove the two strut to steering knuckle bolts.
  • Remove the three upper strut mounting nuts.
  • Remove the strut assembly from the vehicle.
  • Install the new strut in the reverse order, torquing all bolts to their specified values (see torque specifications).
  • Reinstall wheel and lower vehicle.
View full procedure

Rear Shock Absorber Replacement

This procedure outlines the steps for replacing the rear shock absorbers, including torque specifications for all mounting bolts and nuts.

  • Loosen the lug nuts on the rear wheel.
  • Raise and support the vehicle securely.
  • Remove the rear wheel.
  • Support the rear axle or suspension with a jack.
  • Remove the lower shock absorber bolt.
  • Remove the upper shock absorber mounting nut.
  • Remove the old shock absorber.
  • Install the new shock absorber in the reverse order, torquing all bolts and nuts to their specified values.
  • Reinstall the wheel and lower vehicle.
View full procedure

Sway Bar Link Replacement

This procedure explains how to replace sway bar links, including proper torque settings to ensure secure connections.

  • Loosen lug nuts on affected wheel(s).
  • Raise and support the vehicle securely.
  • Remove the wheel(s).
  • Locate and disconnect the sway bar link from both the sway bar and strut or control arm.
  • Remove the old sway bar link.
  • Install the new sway bar link, torquing all nuts and bolts to the specified values.
  • Reinstall the wheel(s) and lower vehicle.
View full procedure
Technical Service Bulletins

Front Suspension Creaking Noise

2015-03-15

Some 2012-2015 Verano models may experience a creaking noise from the front suspension during low-speed maneuvers. This can be caused by insufficient torque on the strut mounting bolts.

2012-2015

Resolution: Inspect and re-torque the upper and lower strut mounting bolts to the specified torque values. Ensure proper lubrication of the strut mounts. Refer to the latest service manual for torque specifications.

Rear Suspension Clunking Noise

2016-11-20

Some 2013-2017 Verano models may experience a clunking noise from the rear suspension. This can be attributed to loose or improperly torqued rear shock absorber mounting bolts.

2013-2017

Resolution: Inspect and re-torque all rear shock absorber mounting bolts and nuts to the specified torque values. Check for any worn or damaged shock absorbers or mounts.

Steering Wheel Vibration at Highway Speeds

2017-06-01

Some 2014-2017 Verano models may experience steering wheel vibration at highway speeds, which can be related to suspension component issues and incorrect torque on the lower control arm bolts.

2014-2017

Resolution: Inspect the lower control arms and bushings. Ensure all suspension bolts including those on the lower control arms are tightened to the specified torque. Rebalance the wheels if necessary.

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