Cadillac ATS 2013-2019 2.0L Engine Bolt Torque Specifications & Fastener Values
Cadillac ATS 2013-2019

Cadillac ATS 2013-2019 2.0L Engine Bolt Torque Specifications

Comprehensive torque specifications for all major bolts on the 2.0L turbocharged engine in the 2013-2019 Cadillac ATS. Includes cylinder head bolts, main bearing bolts, connecting rod bolts, 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

Specifications for components related to the cylinder head, including bolts securing the head to the block, and valve train components.

1

Cylinder Head Bolts

M12 x 1.75
Important Notes
Torque in sequence as specified in the service manual. These bolts are torque-to-yield and must be replaced after removal. Apply clean engine oil to threads prior to installation. Follow specific torque sequence for head bolts (typically inside to outside).
2

Valve Cover Bolts

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern. Do not overtighten. May have rubber grommets - do not overtighten or deform.
3

Cylinder Head Cover Bolts

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern. Do not overtighten. If this engine uses a separate cylinder head cover, ensure the gasket is in place.
4

Camshaft Bearing Cap Bolts

M8 x 1.25
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Torque in sequence. Follow the specific sequence in the service manual to ensure proper camshaft alignment and bearing preload.
5

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Tighten evenly. Ensure proper alignment of rocker arms and shafts before tightening.

Engine Block

Specifications for components attached to the engine block, including the crankshaft, pistons, and oil system.

1

Main Bearing Bolts

M10 x 1.5
Important Notes
Torque in sequence as specified in the service manual. These bolts are torque-to-yield and should be replaced after removal. Apply clean engine oil to threads prior to installation. Follow specific sequence for main bearing cap bolts.
2

Connecting Rod Nuts

M9 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Ensure connecting rod cap is properly aligned. Torque evenly. Apply clean engine oil to threads.
3

Oil Pan Bolts

M6 x 1.0
Torque Value
8.8 ft-lbs (12 N·m)
Important Notes
Tighten in a criss-cross pattern. Do not overtighten. Ensure new gasket is installed correctly.
4

Oil Filter Housing Bolt

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly. Ensure new o-ring or gasket is installed.
5

Oil Drain Plug Bolt

M14 x 1.5
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Always use a new crush washer. Do not overtighten.
6

Water Pump Bolts

M6 x 1.0
Torque Value
8.8 ft-lbs (12 N·m)
Important Notes
Tighten evenly in a criss-cross pattern. Ensure a new gasket is installed.
7

Thermostat Housing Bolts

M6 x 1.0
Torque Value
8.8 ft-lbs (12 N·m)
Important Notes
Tighten evenly in a criss-cross pattern. Ensure new gasket is installed and that the thermostat is correctly positioned.

Rotating Assembly

Specifications for components relating to the crankshaft and flywheel

1

Flywheel Bolts

M12 x 1.25
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Torque in a star pattern to avoid distortion. Ensure correct flywheel or flexplate installation. Use new bolts if specified by the manufacturer.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Ensure proper alignment of pulley/balancer. Use a crankshaft locking tool if needed.

Timing System

Specifications for components related to the engine's timing system.

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Value
16 ft-lbs (22 N·m)
Important Notes
Ensure correct tensioner position. Do not over-tighten.
2

Camshaft Sprocket Bolt

M10 x 1.25
Torque Value
48 ft-lbs (65 N·m)
Important Notes
Ensure correct timing mark alignment before tightening. Use a camshaft holding tool if necessary.

Intake Exhaust

Specifications for intake and exhaust manifolds, throttle bodies, and related components.

1

Intake Manifold Bolts

M8 x 1.25
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Tighten in a criss-cross pattern. Ensure proper gasket installation.
2

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Tighten in a criss-cross pattern. Ensure proper gasket or seal installation. Use anti-seize compound on threads if needed.
3

Throttle Body Bolts

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Do not overtighten. Ensure proper sealing. May have rubber gasket - do not deform by overtightening.
4

EGR Valve Bolts

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Do not over-tighten. Ensure proper gasket or seal installation.

Fuel System

Specifications for fuel rail and injector related components.

1

Fuel Rail Bolts

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper alignment of fuel rail. Do not over-tighten.
2

Fuel Injector Bolts

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper alignment. Do not overtighten. Ensure new seals are used.

Ignition System

Specifications for spark plugs and ignition coil related components.

1

Spark Plugs

M14 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Use a spark plug socket. Do not overtighten. Ensure correct spark plug gap.
2

Ignition Coil Bolt

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Do not overtighten. Ensure coil is properly seated.

Cooling System

Specifications for cooling system components.

1

Water Pump Pulley Bolts

M6 x 1.0
Torque Value
8.8 ft-lbs (12 N·m)
Important Notes
Tighten evenly. Ensure proper pulley alignment.

Accessory Drive

Specifications for accessory drive belt components.

1

Serpentine/Accessory Drive Belt Tensioner Bolt

M8 x 1.25
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Ensure proper tensioner position before tightening.
2

Drive Belt Idler Pulley Bolt

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

Sensors

Specifications for various engine sensors.

1

Knock Sensor Bolt

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Do not over-tighten to avoid damage to the sensor. Ensure sensor is correctly seated.
2

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Do not over-tighten. Ensure sensor is properly seated and aligned. Ensure sensor connector can be properly reattached.
3

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Do not over-tighten. Ensure sensor is properly seated and aligned. Ensure sensor connector can be properly reattached.
4

Coolant Temperature Sensor Bolt

M6 x 1.0
Torque Value
7.4 ft-lbs (10 N·m)
Important Notes
Do not over-tighten. Ensure sensor is properly sealed and connected. Ensure sensor connector can be properly reattached.

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?

Using the correct torque ensures proper clamping force, preventing leaks, component failure, and bolt breakage. Over-torquing can strip threads or damage components, while under-torquing can lead to loosening and leaks. For example, improperly torqued cylinder head bolts can result in head gasket failure and coolant leaks.

Q2

What happens if I overtighten a bolt?

Overtightening can stretch or break the bolt, damage threads in the component, or distort the gasket or mating surface, leading to leaks or component failure. A common scenario is stripping the threads on the aluminum timing cover when overtightening bolts, requiring a more complicated repair.

Q3

What type of lubricant should I use on bolts before tightening?

Unless specified otherwise by the manufacturer, use a light coating of engine oil on bolt threads to ensure accurate torque readings. For bolts that thread into aluminum, anti-seize compound might be recommended to prevent galling and make removal easier during future repairs. Refer to the service manual for specific recommendations.

Q4

Should I use a torque wrench?

Yes, a torque wrench is essential for accurately applying torque. Using a standard wrench and 'feel' is not sufficient for precise torque specifications, especially on critical engine components. For example, connecting rod bolts on the 2.0L require accurate torque to ensure proper engine operation.

Q5

What does 'torque-to-yield' mean and how does it apply to this engine?

Torque-to-yield bolts are designed to stretch when tightened. They provide a more consistent clamping force but are one-time-use only. The 2.0L engine might utilize torque-to-yield fasteners for certain components like cylinder head bolts. Always refer to the service manual for specific bolt types and whether they need to be replaced after removal.

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 accurate bolt tightening.

  • Wide torque range (e.g., 20-150 ft-lbs)
  • Click-type or digital display
  • Accurate to within +/- 3%
Learn more

Torque Wrench (3/8-inch drive)

A smaller torque wrench is needed for lower torque specifications.

  • Lower torque range (e.g., 5-80 ft-lbs)
  • Click-type or digital display
  • Accurate to within +/- 3%
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets in various sizes.

  • Various sizes from 8mm-24mm
  • 6-point sockets for optimal grip
  • 1/2-inch and 3/8-inch drive sizes
Learn more

Socket Extensions

Extensions to reach bolts in recessed areas.

  • Various lengths (e.g., 3-inch, 6-inch)
  • 1/2-inch and 3/8-inch drive sizes
  • Swivel extensions for added flexibility
Learn more
Service Procedures

Cylinder Head Bolt Tightening Procedure (2.0L)

Proper procedure for tightening cylinder head bolts on the 2.0L engine.

  • Clean all bolt threads and the cylinder head mating surface.
  • Install new cylinder head bolts. DO NOT reuse old bolts.
  • First Pass: Tighten all bolts to 22 lb ft (30 Nm) in the specified sequence.
  • Second Pass: Tighten all bolts an additional 70 degrees in the specified sequence.
  • Third Pass: Tighten all bolts an additional 70 degrees in the specified sequence.
View full procedure

Camshaft Bearing Cap Bolt Tightening (2.0L)

Tightening procedure for camshaft bearing cap bolts.

  • Install camshaft bearing caps and lightly tighten all bolts.
  • First Pass: Tighten the bolts to 8 lb ft (11 Nm) in the specified sequence.
  • Second Pass: Tighten all bolts an additional 70 degrees in the specified sequence.
View full procedure

Connecting Rod Cap Bolt Tightening (2.0L)

Tightening procedure for connecting rod cap bolts.

  • Install connecting rod cap and lightly tighten all bolts.
  • First Pass: Tighten all bolts to 22 lb ft (30 Nm).
  • Second Pass: Tighten all bolts an additional 60 degrees.
View full procedure

Intake Manifold Bolt Tightening (2.0L)

Tightening procedure for the intake manifold bolts.

  • Install the intake manifold and lightly tighten all bolts.
  • Tighten bolts to 18 lb ft (25 Nm) in the specified sequence.
View full procedure

Exhaust Manifold Bolt Tightening (2.0L)

Tightening procedure for the exhaust manifold bolts.

  • Install the exhaust manifold and lightly tighten all bolts.
  • Tighten bolts to 18 lb ft (25 Nm) in the specified sequence.
View full procedure
Technical Service Bulletins

Engine Oil Consumption and Piston Ring Issues

2017-05-15

Some 2.0L engines may exhibit excessive oil consumption due to piston ring issues.

2013-2017 Cadillac ATS 2.0L

Resolution: Inspect piston rings for wear or damage. Replace with updated piston ring design if necessary.

Cylinder Head Bolt Failure

2018-11-20

Reports of cylinder head bolt stretch or failure have been recorded on some vehicles.

2013-2019 Cadillac ATS 2.0L

Resolution: Always replace cylinder head bolts during any procedure requiring their removal. Follow the torque procedure exactly.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

Automotive Technical Specialist

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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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