Cadillac ATS 2013-2019 Suspension Bolt Torque Specifications & Fastener Values
Cadillac ATS 2013-2019

Cadillac ATS 2013-2019 Suspension Bolt Torque Specifications

This page provides detailed torque specifications for all suspension bolts on the 2013-2019 Cadillac ATS. 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 Strut

Specifications for the front strut assembly, including mounting points and related components.

1

Strut to Steering Knuckle Bolts

M14 x 1.5
Important Notes
These are torque-to-yield bolts and must be replaced after removal. Use a 90 degree angle torque after initial torque is applied. Estimated value, verify against vehicle-specific service manual.
2

Strut Top Mount Nut (To Strut Rod)

M12 x 1.25
Torque Value
28 ft-lbs (38 N·m)
Important Notes
Estimated value, verify against vehicle-specific service manual. Ensure the strut rod is held to prevent rotation while torquing.
3

Strut Upper Mounting Bolts (To Chassis)

M10 x 1.5
Torque Value
44 ft-lbs (60 N·m)
Important Notes
Tighten evenly to ensure proper strut alignment. Estimated value, verify against vehicle-specific service manual. Torque in a criss-cross pattern.

Front Control Arms

Specifications for front upper and lower control arm mounting points.

1

Control Arm to Frame/Subframe Bolts

M12 x 1.75
Torque Value
52 ft-lbs (70 N·m)
Important Notes
Proper torque is critical for alignment. Estimated value, verify against vehicle-specific service manual. Tighten with suspension loaded.
2

Control Arm to Steering Knuckle Bolt

M14 x 1.5
Torque Value
52 ft-lbs (70 N·m)
Important Notes
Proper torque is critical for alignment. Estimated value, verify against vehicle-specific service manual. Tighten with suspension loaded.

Steering Components

Specifications for steering rack, tie rod ends, and related components.

1

Steering Gear/Rack Mounting Bolts

M12 x 1.75
Torque Value
96 ft-lbs (130 N·m)
Important Notes
Ensure correct alignment before tightening. Estimated value, verify against vehicle-specific service manual. Torque in a criss-cross pattern.
2

Tie Rod End Nut

M14 x 1.5
Torque Value
33 ft-lbs (45 N·m)
Important Notes
Use a new castellated nut and cotter pin. Estimated value, verify against vehicle-specific service manual.
3

Ball Joint Nut

M14 x 1.5
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Use a new castellated nut and cotter pin if applicable. Estimated value, verify against vehicle-specific service manual.

Sway Bar

Specifications for sway bar mounts, links, and related hardware.

1

Sway Bar Link Nuts

M10 x 1.5
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Applies to both upper and lower link connections. Estimated value, verify against vehicle-specific service manual.
2

Sway Bar Bracket Bolts (To Frame/Subframe)

M8 x 1.25
Torque Value
23 ft-lbs (31 N·m)
Important Notes
Tighten evenly to prevent binding. Estimated value, verify against vehicle-specific service manual.

Wheel Speed Sensor

Specifications for wheel speed sensor mounting hardware.

1

Wheel Speed Sensor Mounting Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Do not overtighten. Inch-lbs converted to ft-lbs. Estimated value, verify against vehicle-specific service manual.

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 are correct torque specifications important for suspension bolts?

Correct torque is crucial for proper suspension function, safety, and longevity. Under-torqued bolts can loosen, causing play, instability, and potential component failure. Over-torqued bolts can stretch or break, damaging the components and leading to premature failure. Incorrect torque can also negatively impact wheel alignment.

Q2

Should I use new bolts when working on the suspension?

Yes, it is generally recommended to replace torque-to-yield (TTY) bolts whenever they are removed. These bolts are designed to stretch upon installation, and re-using them can result in inaccurate torque, potential failure and even unsafe conditions. Check the manufacturer's specifications for bolt type and replacement recommendations.

Q3

What is the difference between lb-ft and Nm when referring to torque specifications?

lb-ft (pound-feet) and Nm (Newton-meters) are both units of torque. lb-ft is common in the US, while Nm is used internationally. They represent the amount of rotational force applied. For example, a torque spec might be 50 lb-ft or 68 Nm, these specifications are equivalent. Use a torque wrench with the appropriate units as indicated in your service manual.

Q4

What happens if I don't use a torque wrench?

Using a regular wrench or impact gun without checking the torque can lead to over or under-tightening. This can cause component damage, bolt failure, suspension misalignment and could potentially compromise safety. A torque wrench is essential to achieve the precise tightness required.

Q5

Do I need to re-torque the suspension bolts after driving?

It is recommended to re-torque suspension bolts after driving approximately 50-100 miles after initial installation, especially if they are TTY bolts. This ensures they have settled and are still at the correct torque, especially when new components are installed or if the suspension was just serviced. This is not always necessary for all bolts. Refer to the specific component's re-torquing requirement.

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" Drive)

A calibrated torque wrench is essential for applying accurate torque values to suspension bolts.

  • Wide torque range (e.g., 20-150 ft-lbs)
  • Audible click when desired torque is reached
  • Clearly marked scale
Learn more

Torque Wrench (3/8" Drive)

A smaller torque wrench is useful for tighter spaces or lower torque applications.

  • Torque range (e.g., 5-80 ft-lbs)
  • Compact design
  • Audible click indicator
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets is needed to fit all the different bolt head sizes.

  • Variety of sizes
  • 6-point design for better grip
  • Durable construction
Learn more

Wrench Set (Metric)

Metric wrenches are useful when sockets can not be applied.

  • Variety of sizes
  • Open end and box end for different applications
  • Durable construction
Learn more

Extension Bars

Extension bars provide needed reach when fasteners are in hard to reach locations.

  • Different lengths to choose from
  • Secure connection to sockets and ratchets
  • Made of durable steel
Learn more
Service Procedures

Front Strut Bolt Torque Procedure

Procedure for torquing the bolts securing the front strut assembly.

  • Locate the upper and lower strut mounting bolts.
  • Refer to the torque specification chart below for the correct values.
  • Using the correct socket, tighten the upper strut bolts to the specified torque.
  • Using the correct socket, tighten the lower strut bolts to the specified torque.
  • Double-check all bolts to ensure they are correctly torqued.
View full procedure

Rear Control Arm Bolt Torque Procedure

Procedure for torquing the bolts of the rear suspension control arms.

  • Locate the control arm mounting bolts.
  • Refer to the torque specification chart for the correct values.
  • Using the correct socket, tighten the control arm bolts to the specified torque.
  • Double-check all bolts to ensure they are correctly torqued.
View full procedure

Sway Bar Link Bolt Torque Procedure

Procedure for torquing sway bar links to the front and rear suspension

  • Locate the sway bar link bolts.
  • Refer to the torque specification chart for the correct values.
  • Using the correct socket, tighten the sway bar link bolts to the specified torque.
  • Double-check all bolts to ensure they are correctly torqued.
View full procedure
Technical Service Bulletins

Suspension Noise Diagnostic Tips

2017-03-15

This bulletin provides diagnostic tips for addressing suspension noises which may relate to improper bolt torquing.

2013-2017

Resolution: Inspect suspension components and ensure fasteners are torqued to specifications.

Revised Front Strut Torque Specifications

2018-08-22

This bulletin contains revisions to front strut torque specs and important information on proper hardware reuse.

2013-2019

Resolution: Use the updated torque specifications listed in the bulletin, use new hardware when indicated.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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