Buick Verano 2012-2017 2.0L Engine Bolt Torque Specifications & Fastener Values
Buick Verano 2012-2017

Buick Verano 2012-2017 2.0L Engine Bolt Torque Specifications

This page provides detailed torque specifications for various bolts on the 2.0L engine found in the 2012-2017 Buick Verano. Includes critical tightening torques for components like cylinder head, connecting rod, main bearing caps, and more.

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

Cylinder Head

Fasteners related to securing the cylinder head to the engine block, crucial for combustion sealing.

1

Cylinder Head Bolts (long)

M10 x 1.5
Important Notes
Torque-to-yield bolts, must be replaced after removal. Follow specific torque sequence (typically start from center and spiral outwards).
2

Cylinder Head Bolts (short)

M8 x 1.25
Important Notes
Torque-to-yield bolts, must be replaced after removal. Follow specific torque sequence (typically start from center and spiral outwards).

Camshaft

Fasteners related to securing the camshaft and associated components.

1

Camshaft Bearing Cap Bolts

M8 x 1.25
Torque Value
8.8 ft-lbs (12 N·m)
Important Notes
Ensure proper cap orientation. Tighten in sequence (typically from the center outwards).

Connecting Rod

Fasteners related to securing the connecting rod to the crankshaft.

1

Connecting Rod Cap Bolts

M9 x 1.25
Important Notes
Torque-to-yield bolts. Must be replaced after removal. Apply a thin layer of engine oil to the bolt threads. Tighten in alternating pattern.

Crankshaft Main Bearing

Fasteners for securing the crankshaft main bearings to the engine block.

1

Crankshaft Main Bearing Cap Bolts (M10)

M10 x 1.5
Important Notes
Torque-to-yield bolts. Must be replaced after removal. Tighten in specified sequence.
2

Crankshaft Main Bearing Cap Bolts (M8)

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Tighten in specified sequence.

Oil Pan

Fasteners for securing the oil pan to the engine block, preventing oil leaks.

1

Oil Pan Bolts

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly in a criss-cross pattern to ensure proper sealing. Use a new gasket.
2

Oil Drain Plug

M14 x 1.5
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Use a new crush washer.

Flywheel Flexplate

Fasteners securing the flywheel or flexplate to the crankshaft.

1

Flywheel/Flexplate Bolts

M10 x 1.5
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Apply thread locker to bolt threads.

Intake Manifold

Fasteners for securing the intake manifold to the cylinder head.

1

Intake Manifold Bolts

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in specified sequence (typically center outwards). Use a new gasket.

Exhaust Manifold

Fasteners securing the exhaust manifold to the cylinder head.

1

Exhaust Manifold Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Tighten in specified sequence (typically center outwards). Use a new gasket if needed.

Valve Cover

Fasteners used to secure the valve cover to the cylinder head.

1

Valve Cover Bolts

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly in a criss-cross pattern to prevent leaks. Use a new gasket.

Timing Chain

Fasteners securing the timing chain tensioner.

1

Timing Chain Tensioner Bolts

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Ensure tensioner is properly positioned before tightening.

Water Pump

Fasteners securing the water pump to the engine block.

1

Water Pump Bolts (M6)

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly to prevent leaks. Use a new gasket.
2

Water Pump Bolts (M8)

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Tighten evenly to prevent leaks. Use a new gasket.

Thermostat Housing

Fasteners securing the thermostat housing.

1

Thermostat Housing Bolts

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Use a new gasket, tighten evenly.

Alternator

Fasteners securing the alternator to the engine or bracket.

1

Alternator Mounting Bolts (M8)

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment before tightening.
2

Alternator Mounting Bolts (M10)

M10 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Ensure proper alignment before tightening.

Power Steering Pump

Fasteners securing the power steering pump to the engine.

1

Power Steering Pump Mounting Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment before tightening.

Ac Compressor

Fasteners securing the AC compressor to the engine.

1

Air Conditioning Compressor Mounting Bolts (M8)

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment before tightening.
2

Air Conditioning Compressor Mounting Bolts (M10)

M10 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Ensure proper alignment before tightening.

Starter

Fasteners securing the starter motor to the engine.

1

Starter Mounting Bolts

M10 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Ensure proper alignment before tightening.

Crankshaft Harmonic Balancer

Fasteners securing the crankshaft harmonic balancer to the crankshaft.

1

Crankshaft Harmonic Balancer Bolt

M16 x 2.0
Important Notes
Torque-to-yield bolt, must be replaced after removal. Use a suitable crankshaft holding tool.

Turbocharger System

Fasteners related to the turbocharger and its associated components. (Only if equipped).

1

Turbocharger Mounting Bolts (M8)

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Tighten in specified sequence. Estimated value.
2

Turbocharger Mounting Bolts (M10)

M10 x 1.5
Torque Value
37 ft-lbs (50 N·m)
Important Notes
Tighten in specified sequence. Estimated value.
3

Turbocharger Oil Inlet/Outlet Bolts (M6)

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Use new sealing washers. Estimated value.
4

Turbocharger Oil Inlet/Outlet Bolts (M8)

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Use new sealing washers. Estimated value.
5

Turbocharger Coolant Line Bolts

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Use new sealing washers. Estimated value.
6

Intercooler Pipe Clamps

N/A
Torque Value
3.7 ft-lbs (5 N·m)
Important Notes
Do not overtighten, as it can damage the clamps and piping. Estimated value.

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 so important?

Using the correct torque specification is crucial for several reasons. Over-tightening bolts can lead to thread damage, bolt shearing, and component failure. Under-tightening can result in leaks, vibrations, and loosening of parts over time. Correct torque ensures proper clamping force and maintains the structural integrity of the engine. For example, incorrectly torqued cylinder head bolts can lead to head gasket failure and catastrophic engine damage. Proper torque is vital for a safe and reliable engine.

Q2

What type of torque wrench should I use?

For accurate torque application, it's recommended to use a calibrated torque wrench. Click-type torque wrenches are a popular choice for their ease of use and audible click when the set torque is reached. Dial-type torque wrenches offer more precision but can be slightly more challenging to use. Digital torque wrenches provide the most accuracy with a digital readout, but they are generally more expensive. When working on critical engine components like the cylinder head or connecting rods, investing in a good quality, calibrated torque wrench is essential for reliable results.

Q3

Do I need to replace bolts after removal?

In some cases, yes. Many bolts are designed for single use, particularly those that use torque-to-yield (TTY) specifications. For the 2.0L engine, cylinder head bolts are TTY and must be replaced whenever removed. Reusing TTY bolts can result in improper clamping force and engine damage. It's best practice to consult a reliable repair manual or service information for your specific vehicle and engine to determine if bolt replacement is required.

Q4

What should I do if a bolt strips or breaks?

If a bolt strips, stop immediately to prevent further damage. A stripped bolt cannot provide proper clamping force. You will need to remove the stripped bolt, which may require specialized tools. If a bolt breaks, use an extraction tool or seek professional help. Once the damaged bolt is removed, use the correct replacement bolt and torque it to spec. Failure to address stripped or broken bolts will cause issues down the road.

Q5

How does applying oil to the threads impact torque values?

Lubricating bolt threads alters the friction and will impact the final clamping force. Unless the torque specification states otherwise, threads should be clean and dry. Applying oil to dry torque specifications can increase the clamping force by 20-30%. In contrast, if a specification states to use an oil or lubricant, follow it exactly. Deviation from these practices can result in overtightening and bolt failure. For example, the torque spec for the intake manifold may call for clean and dry threads, and ignoring that can cause manifold cracking. It’s best to consult a torque spec chart and follow it carefully.

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 high-quality torque wrench capable of measuring torque values from 10 Nm to 200 Nm.

  • Click-type mechanism
  • Clearly marked scale for easy reading
  • Calibration certificate included is recommended
Learn more

Torque Wrench (3/8-inch Drive)

A smaller torque wrench for lower torque applications, generally from 5 Nm to 50 Nm.

  • Click-type mechanism
  • Clearly marked scale for easy reading
  • Calibration certificate included is recommended
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets, including deep and shallow sizes.

  • Variety of sizes from 8mm to 24mm
  • 6-point sockets recommended for secure fit
  • Durable chrome vanadium steel construction
Learn more

Extension Bars (Various Lengths)

Assorted length extensions to access recessed bolts.

  • 1/2-inch and 3/8-inch drive options
  • Durable construction
  • Variety of lengths such as 3, 6, 10 inch
Learn more

Universal Joint

Allows for socket articulation to reach fasteners in difficult locations.

  • 1/2-inch and 3/8-inch drive options
  • Durable construction
  • Smooth operation
Learn more

Engine Service Manual (Specific to 2.0L Verano)

A detailed manual providing torque specifications, assembly procedures, and diagrams for the 2.0L engine.

  • Accurate torque specifications
  • Detailed diagrams of components
  • Step-by-step assembly instructions
Learn more
Service Procedures

Cylinder Head Bolt Tightening Procedure (2.0L Engine)

Proper tightening sequence and torque specifications are critical to prevent leaks and damage to the cylinder head. Use new bolts for reassembly.

  • Clean threads of cylinder block and bolts thoroughly.
  • Install cylinder head and new bolts. Tighten all bolts in sequence to 25 Nm using the first-pass sequence.
  • Tighten the long cylinder bolts by 70 degrees using the second pass sequence.
  • Tighten the short cylinder bolts by 50 degrees using the second pass sequence.
  • Verify final torque value.
View full procedure

Intake Manifold Bolt Tightening Procedure (2.0L Engine)

Tightening the intake manifold bolts to the correct torque specifications prevents vacuum leaks and ensures proper sealing.

  • Install the intake manifold.
  • Hand-tighten all bolts initially.
  • Using the correct tightening sequence, tighten all bolts to 10 Nm.
  • Verify final torque value.
View full procedure

Exhaust Manifold Bolt Tightening Procedure (2.0L Engine)

Tighten exhaust manifold bolts to the correct torque specifications, working from center bolts outwards to prevent leaks.

  • Install the exhaust manifold using new gasket.
  • Hand-tighten all bolts initially.
  • Using the correct tightening sequence, tighten all bolts to 25 Nm.
  • Verify final torque value.
View full procedure

Connecting Rod Cap Bolt Tightening Procedure (2.0L Engine)

Correct torque for connecting rod cap bolts is critical for bearing health and engine function.

  • Install connecting rod cap and hand-tighten bolts.
  • Tighten bolts to 20 Nm using the proper sequence.
  • Tighten bolts an additional 60 degrees.
  • Verify final torque value.
View full procedure

Crankshaft Main Bearing Cap Bolt Tightening Procedure (2.0L Engine)

Tighten main bearing cap bolts to the correct torque specifications and sequence to ensure crankshaft alignment and bearing life.

  • Install main bearing caps and hand-tighten bolts.
  • Tighten all bolts to 30 Nm using correct tightening sequence.
  • Tighten all bolts an additional 50 degrees.
  • Verify final torque value.
View full procedure
Technical Service Bulletins

Engine Oil Leakage From Cylinder Head Area

2016-05-15

Some 2012-2017 Verano models with the 2.0L engine have reported oil leaks originating from the cylinder head due to inadequate bolt tightening or incorrect torquing sequence during assembly.

2012-2017 Buick Verano 2.0L

Resolution: Inspect the cylinder head bolts and verify correct torque specifications and tightening sequence. Replace bolts if necessary and follow specified torque procedure.

Intake Manifold Gasket Failure and Vacuum Leaks

2015-11-20

Reports of vacuum leaks in 2.0L engines are linked to potential intake manifold gasket failures due to improper manifold bolt torque during installation.

2012-2017 Buick Verano 2.0L

Resolution: Inspect intake manifold gasket for damage. Ensure intake manifold bolts are tightened to 10Nm using the proper sequence.

Exhaust Manifold Leaks and Bolt Issues

2017-02-01

Some 2.0L engines have experienced exhaust leaks due to improper exhaust manifold installation and improper torque. Damaged gaskets can also cause leaks.

2012-2017 Buick Verano 2.0L

Resolution: Verify exhaust manifold is installed using a new gasket and tightened to 25 Nm using proper sequence.

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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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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