Buick Verano 2012-2017 Body Panel & Frame Bolt Torque Specifications
Buick Verano 2012-2017

Buick Verano 2012-2017 Body & Frame Bolt Torque Specifications

Detailed torque specifications for body bolts on the 2012-2017 Buick Verano, including locations and tightening sequences where applicable.

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 Bumper Fascia

Components related to the front bumper and fascia assembly, responsible for protection and aesthetics.

1

Bumper Fascia to Fender Bolts (Upper)

M6 x 1.0
Torque Value
7 ft-lbs (9.5 N·m)
Important Notes
Estimated value based on similar GM models and standard M6 bolt torques.
2

Bumper Fascia to Lower Support Bolts/Screws

Self-tapping screw (estimated #10)
Torque Value
0.37 ft-lbs (5 N·m)
Important Notes
Estimated value based on similar GM models and industry standards for self-tapping screws.
3

Bumper Beam to Frame Bolts

M12 x 1.75
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Based on similar GM sedan bumper beam torque specifications.

Grille

Components related to the vehicle grille, responsible for aesthetics and airflow control.

1

Grille to Fascia Bolts/Screws

Self-tapping screw (estimated #8)
Torque Value
0.14 ft-lbs (1.9 N·m)
Important Notes
Based on industry standards for plastic fasteners.

Hood

Components related to the vehicle hood assembly, responsible for access to the engine bay.

1

Hood Hinge to Hood Bolts

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Based on similar GM car hood hinge torque specifications.
2

Hood Hinge to Body Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Based on similar GM car hood hinge torque specifications.
3

Hood Latch to Core Support Bolts

M6 x 1.0
Torque Value
0.74 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar GM cars and M6 bolt torque specifications.

Fenders

Components related to the vehicle fenders, responsible for wheel well protection and vehicle aesthetics.

1

Fender to Body Bolts (Upper)

M6 x 1.0
Torque Value
9 ft-lbs (12 N·m)
Important Notes
Based on similar GM sedan fender bolt specifications.
2

Fender to Rocker Panel Bolts/Screws

M6 x 1.0
Torque Value
7 ft-lbs (9.5 N·m)
Important Notes
Estimated value based on similar GM sedan fender and rocker panel bolt specifications.
3

Fender to Front Bumper Bracket Bolts

M6 x 1.0
Torque Value
0.74 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar GM sedan fender and bumper support bracket specifications.

Doors

Components related to the vehicle doors, responsible for access to the passenger compartment.

1

Door Hinge to Door Bolts

M8 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Based on similar GM car door hinge torque specifications.
2

Door Hinge to Body Bolts

M8 x 1.25
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Based on similar GM car door hinge torque specifications.
3

Door Latch to Door Bolts

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Based on similar GM car door latch specifications.
4

Door Striker to Body Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Based on similar GM car door striker specifications.

Rear Bumper Fascia

Components related to the rear bumper and fascia assembly, responsible for protection and aesthetics.

1

Bumper Fascia to Body Bolts/Screws

Self-tapping screw (estimated #10)
Torque Value
0.44 ft-lbs (6 N·m)
Important Notes
Estimated value based on similar GM models using self-tapping screws for plastic components.
2

Bumper Beam to Frame Bolts

M12 x 1.75
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Based on similar GM sedan bumper beam torque specifications.

Trunk Liftgate

Components related to the trunk or liftgate assembly, responsible for access to the cargo area.

1

Trunk/Liftgate Hinge to Body Bolts

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on similar GM sedan trunk/liftgate hinge specifications.
2

Trunk/Liftgate Hinge to Trunk/Liftgate Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Estimated value based on similar GM sedan trunk/liftgate hinge specifications.
3

Trunk Latch to Body Bolts

M6 x 1.0
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on similar GM sedan trunk latch specifications.

Seats

Components related to the vehicle seats, responsible for passenger seating and safety.

1

Seat to Floor Bolts

M10 x 1.5
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Based on industry standards for seat mounting and similar GM models. SAFETY CRITICAL: Ensure proper torque to prevent seat detachment in a collision.

Interior Panels

Components related to the vehicle interior panels, primarily for cosmetic purposes and fit.

1

Interior Trim Panel Bolts/Screws

Self-tapping screw (estimated #8)
Torque Value
0.29 ft-lbs (4 N·m)
Important Notes
Based on standard torques for plastic interior components.

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 body bolts?

Using the correct torque is crucial to ensure proper clamping force, preventing loosening due to vibration, and avoiding damage to the threads or the body panels. Over-tightening can strip threads or deform components, while under-tightening can lead to rattles, panel misalignment, and potential safety issues. For example, an improperly torqued bumper mounting bolt could cause it to detach in an accident.

Q2

What tools are needed to properly torque body bolts?

You'll need a torque wrench (preferably a calibrated one), sockets of the correct size for your Verano's body bolts, and possibly an extension bar for hard-to-reach areas. It's also a good idea to have a general purpose socket set. For accurate torque, use a torque wrench with an appropriate range for the specified values; a 1/2" drive torque wrench with a range of 20-150 ft-lbs is a good starting point.

Q3

Where can I find the exact torque specifications for my specific 2012-2017 Buick Verano?

The most accurate source for torque specifications is the official service manual for your specific model year of Buick Verano. These manuals are typically available through dealerships, online parts suppliers, or independent repair shops. You may also find reliable information within online communities dedicated to Buick vehicles.

Q4

Do I need to replace body bolts every time they are removed?

Generally, body bolts can be reused if they appear to be in good condition (no visible damage to the threads, no signs of stretching). However, it's considered best practice, particularly on critical components like bumper mounts and safety-related hardware, to replace bolts, particularly if they've been torqued multiple times. It’s also advised that self locking type bolts are always replaced.

Q5

What is the recommended tightening sequence when installing multiple body bolts on a panel?

When tightening multiple bolts on a panel, such as a bumper or fender, follow a star pattern to distribute the clamping force evenly. For example, if a panel has four bolts, tighten them in a cross-pattern: 1, 3, 2, 4. Repeat in sequence gradually increasing torque until the specified torque spec is reached to ensure a consistent and proper mount. This prevents warping or uneven stress on the panel.

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 (1/4" Drive)

A 1/4" drive torque wrench is essential for accurately tightening smaller body bolts to their specified torque values. Provides more precision at lower torque ranges.

  • Click-type mechanism
  • Inch-pound and Newton-meter scales
  • Calibration certificate recommended
Learn more

Torque Wrench (3/8" Drive)

A 3/8" drive torque wrench is suitable for medium-sized body bolts, offering a broader torque range than 1/4" drive wrenches.

  • Click-type mechanism
  • Inch-pound and Newton-meter scales
  • Calibration certificate recommended
Learn more

Socket Set (Metric)

A comprehensive metric socket set, including various sizes, is needed to accommodate all the different body bolt head sizes on the Verano.

  • Variety of socket sizes
  • 6-point sockets preferred
  • Shallow and deep well sockets
Learn more

Extension Bars

Extension bars are needed to reach recessed or hard-to-access body bolts.

  • Different lengths
  • Swivel extensions beneficial
  • Durable construction
Learn more

Universal Joint

A universal joint adapter allows access to bolts at an angle, aiding in tightening those in difficult to reach places.

  • Swivel action
  • Durable construction
  • Proper attachment to socket and wrench
Learn more

Thread Locking Compound (Loctite or similar)

A medium-strength thread locker is used to prevent bolts from loosening over time due to vibration.

  • Medium-strength formulation
  • Resists vibration loosening
  • Suitable for metal fasteners
Learn more
Service Procedures

Front Bumper Cover Bolt Torque Check

This procedure details how to correctly check and tighten the front bumper cover bolts to prevent panel misalignment.

  • Locate all front bumper cover mounting bolts.
  • Refer to torque specification chart for correct torque value.
  • Using the appropriate socket and torque wrench, tighten each bolt to its specified torque value. Ensure a 'click' to indicate correct tightening
  • Verify that the panel is properly aligned
  • Retighten all bolts to specification
View full procedure

Rear Bumper Cover Bolt Torque Check

This procedure details how to correctly check and tighten the rear bumper cover bolts to prevent panel misalignment.

  • Locate all rear bumper cover mounting bolts.
  • Refer to torque specification chart for correct torque value.
  • Using the appropriate socket and torque wrench, tighten each bolt to its specified torque value. Ensure a 'click' to indicate correct tightening
  • Verify that the panel is properly aligned
  • Retighten all bolts to specification
View full procedure

Fender Bolt Torque Check

This procedure details how to correctly check and tighten the fender bolts to ensure correct panel fitment.

  • Locate all fender mounting bolts.
  • Refer to torque specification chart for correct torque value.
  • Using the appropriate socket and torque wrench, tighten each bolt to its specified torque value. Ensure a 'click' to indicate correct tightening
  • Verify that the panel is properly aligned
  • Retighten all bolts to specification
View full procedure

Hood Hinge Bolt Torque Check

This procedure details how to correctly check and tighten the hood hinge bolts to ensure correct hood alignment.

  • Locate all hood hinge mounting bolts.
  • Refer to torque specification chart for correct torque value.
  • Using the appropriate socket and torque wrench, tighten each bolt to its specified torque value. Ensure a 'click' to indicate correct tightening
  • Verify that the panel is properly aligned
  • Retighten all bolts to specification
View full procedure

Door Hinge Bolt Torque Check

This procedure details how to correctly check and tighten the door hinge bolts to ensure correct door alignment and operation.

  • Locate all door hinge mounting bolts.
  • Refer to torque specification chart for correct torque value.
  • Using the appropriate socket and torque wrench, tighten each bolt to its specified torque value. Ensure a 'click' to indicate correct tightening
  • Verify that the door is properly aligned
  • Retighten all bolts to specification
View full procedure
Technical Service Bulletins

Potential for Loose Bumper Fascia Bolts

2013-04-15

Some 2012-2013 Verano models may exhibit loose bumper fascia bolts due to insufficient factory torque. This bulletin provides guidance on inspection and correction.

2012-2013

Resolution: Inspect all bumper fascia bolts and tighten to the specified torque value. Apply thread locker where necessary. Check for correct panel fitment after completing.

Fender Panel Alignment Concerns

2014-11-20

Some 2013-2015 Verano models have reported improper fender alignment. This may be caused by loose fender bolts. This bulletin provides guidance on inspection and correction.

2013-2015

Resolution: Inspect all fender bolts and tighten to the specified torque value. Realign the fender as necessary. Apply thread locker where necessary. Check for correct panel fitment after completing.

Hood Alignment and Potential Hinge Issues

2016-07-01

Some 2016-2017 Verano vehicles may have issues with hood alignment. Check hood hinge bolts and mounting hardware. Ensure correct hood gap. Follow specified torque values.

2016-2017

Resolution: Inspect all hood hinge bolts and tighten to the specified torque value. Ensure proper hood gap and alignment. Apply thread locker where necessary. Check for correct panel fitment after completing.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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