Cadillac CTS 2014-2019 2.0L Engine Bolt Torque Specifications & Fastener Values
Cadillac CTS 2014-2019

Cadillac CTS 2014-2019 2.0L Engine Bolt Torque Specifications

Comprehensive list of torque specifications for various bolts on the 2.0L engine in the 2014-2019 Cadillac CTS, including cylinder head, main bearing, and connecting rod bolts.

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 bolts related to the cylinder head assembly, including the head bolts themselves, rocker arms, and camshaft components.

1

Cylinder Head Bolts

M12 x 1.75
Important Notes
Follow specific torque sequence for proper sealing. Usually done in 3 or 4 stages. These are likely Torque to Yield (TTY) bolts and must be replaced if removed.
2

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Ensure correct rocker arm positioning during installation.
3

Camshaft Sprocket Bolt

M10 x 1.5
Torque Value
75 ft-lbs (102 N·m)
Important Notes
Verify proper camshaft timing before tightening.

Engine Block

Specifications for components mounted to or within the engine block, including main bearings and connecting rod components.

1

Main Bearing Bolts

M10 x 1.5
Important Notes
Torque in multiple stages, in a specific sequence.
2

Connecting Rod Nuts

M9 x 1.25
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Ensure proper rod cap orientation and use new nuts if required.
3

Oil Pan Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Torque evenly in a criss-cross pattern to avoid leaks.
4

Oil Drain Plug Bolt

M14 x 1.5
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Use new washer to prevent leaks.
5

Water Pump Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure proper gasket sealing.
6

Water Pump Pulley Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Torque evenly to prevent wobbling.

Front Engine

Specifications for components mounted at the front of the engine, relating to power transfer and accessory drive.

1

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Value
74 ft-lbs (100 N·m)
Important Notes
Use a crankshaft holding tool to prevent rotation during torque application.
2

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure correct tensioner alignment and function after installation.
3

Serpentine/Accessory Drive Belt Tensioner Bolt

M10 x 1.5
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure tensioner is operating smoothly.
4

Drive Belt Idler Pulley Bolt

M10 x 1.5
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Make sure pulley is freely spinning.

Intake Exhaust

Specifications for components relating to the intake and exhaust systems.

1

Intake Manifold Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Torque evenly to prevent leaks.
2

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Use new gaskets and torque in a criss-cross pattern to prevent leaks.
3

Throttle Body Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Do not overtighten to prevent damage.
4

EGR Valve Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Ensure a good seal to avoid leaks.

Fuel System

Specifications for components related to the fuel delivery and ignition systems.

1

Fuel Rail Bolts

M6 x 1.0
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Check for fuel leaks after tightening.
2

Fuel Injector Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Do not over tighten, check for leaks after installation.

Ignition System

Specifications for components relating to the ignition system.

1

Spark Plugs

M14 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Use anti-seize compound on threads (if recommended).
2

Ignition Coil Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Do not overtighten to prevent damage.

Sensors

Specifications for sensors critical for engine management.

1

Crankshaft Position Sensor (CKP) Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Ensure sensor is properly aligned before tightening.
2

Camshaft Position Sensor (CMP) Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Ensure proper sensor alignment.
3

Knock Sensor Bolt

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensure clean sensor contact.
4

Coolant Temperature Sensor Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Ensure sealing washer is properly seated.

Cooling System

Specifications for components relating to the engine's cooling system.

1

Thermostat Housing Bolts

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

Other

Specifications for miscellaneous components that do not fit into other categories.

1

Flywheel Bolts

M12 x 1.5
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Use a flywheel locking tool to prevent crankshaft rotation while tightening.
2

Power Steering Pump Mounting Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment of pump and bracket.

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 torque specifications so important for engine bolts?

Correct torque ensures proper clamping force between components, preventing leaks, gasket failures, and potential engine damage. Under-torquing can lead to loosening and leaks, while over-torquing can strip threads or damage components. For example, improper torque on cylinder head bolts can cause head gasket failure and coolant leaks.

Q2

What tools do I need to properly torque engine bolts?

You'll need a calibrated torque wrench that covers the specified torque range, sockets that fit the bolt heads, and possibly extensions or adapters for hard-to-reach bolts. It's good practice to have both a click-type and a beam-type torque wrench available for different applications. Always calibrate your torque wrench regularly.

Q3

What is a 'torque-to-yield' bolt and does the 2.0L engine use them?

Yes, many of the fasteners in the 2.0L engine are torque-to-yield (TTY). TTY bolts are designed to stretch slightly when torqued. They are typically single-use and must be replaced whenever removed. Examples include cylinder head bolts and connecting rod bolts. Reusing TTY bolts is highly discouraged.

Q4

Should I apply oil or lubricant to the bolts before torquing?

The torque specifications provided are typically for dry, clean bolts unless stated otherwise. Applying lubrication can change the friction and result in inaccurate clamping force, leading to either over-torquing or under-torquing. Always follow the OEM service manual instructions specifically. Some fasteners may have a small amount of a specific sealant or anti-seize applied to the threads. Follow those guidelines if provided by the manual.

Q5

What happens if I don't have the exact torque specification for a bolt?

If you are missing a specific torque specification, do not guess. Refer to an OEM repair manual or a reputable database. Guessing or relying on general rules of thumb can lead to engine damage or a safety hazard. Incorrect torque will void warranties and could cause extensive damage to your engine, potentially leading to premature failure or even unsafe operating conditions. Example: Using the wrong torque on exhaust manifold studs can lead to an exhaust leak.

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 applying precise torque to engine bolts. 1/2-inch drive is recommended for most engine components.

  • Wide torque range (e.g., 20-150 lb-ft)
  • Click-type or digital readout
  • Accurate calibration
Learn more

Torque Wrench (3/8-inch drive)

A smaller 3/8-inch drive torque wrench may be needed for smaller bolts and less torque application.

  • Torque range (e.g., 5-80 lb-ft)
  • Click-type or digital readout
  • Accurate calibration
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets is necessary to fit the various bolt heads used in the 2.0L engine.

  • Various sizes from 8mm to 19mm
  • Standard and deep sockets
  • 6-point design for better grip
Learn more

Socket Extensions

Extensions help access bolts in difficult-to-reach locations.

  • Various lengths
  • 1/2-inch and 3/8-inch drive options
Learn more

Universal Joint

A universal joint allows for angled socket application when straight access is not possible.

  • 1/2-inch and 3/8-inch drive options
Learn more

Threadlocker (Medium Strength)

Use a medium-strength threadlocker on bolts as specified to prevent loosening due to vibration.

  • Prevents bolt loosening
  • Resists vibration
  • Easy to remove when required
Learn more
Service Procedures

Cylinder Head Bolt Torque Procedure

This procedure outlines how to properly torque the cylinder head bolts on the 2.0L engine.

  • Clean all bolt threads and bolt holes.
  • Install cylinder head and new bolts.
  • Tighten all bolts to a preliminary torque of 22 lb-ft (30 Nm) using the proper sequence.
  • Tighten all bolts to a second torque of 70 degrees, using the proper sequence.
  • Tighten all bolts to a final torque of 70 degrees, using the proper sequence.
View full procedure

Intake Manifold Bolt Torque Procedure

This procedure details the proper torque application for the intake manifold bolts.

  • Clean all bolt threads and bolt holes.
  • Install intake manifold.
  • Tighten all bolts to 89 lb-in (10 Nm) in the proper sequence.
View full procedure

Exhaust Manifold Bolt Torque Procedure

This procedure outlines how to properly torque the exhaust manifold bolts on the 2.0L engine.

  • Clean all bolt threads and bolt holes.
  • Install exhaust manifold using new gasket.
  • Tighten all bolts to 22 lb-ft (30 Nm) using the proper sequence.
View full procedure

Camshaft Bearing Cap Torque Procedure

This procedure details how to correctly torque the camshaft bearing cap bolts.

  • Clean all bolt threads and bolt holes.
  • Install camshaft bearing caps, ensuring they are correctly aligned.
  • Tighten all bolts to 89 lb-in (10 Nm) using the proper sequence.
View full procedure

Oil Pan Bolt Torque Procedure

This procedure explains the correct torque application for the oil pan bolts.

  • Clean all bolt threads and bolt holes.
  • Install oil pan using new gasket and sealant.
  • Tighten all bolts to 89 lb-in (10 Nm) in the proper sequence.
View full procedure
Technical Service Bulletins

Excessive Engine Noise After Cylinder Head Service

2017-05-15

Some 2014-2017 Cadillac CTS 2.0L engines may exhibit excessive engine noise after cylinder head removal and installation due to improper bolt tightening procedures or sequences.

2014-2017

Resolution: Verify cylinder head bolt sequence and torque using the specified procedure, replace bolts if necessary. Ensure all mating surfaces are clean and use proper gasket and sealant where applicable.

Oil Leakage from Oil Pan After Service

2018-11-20

2015-2018 Cadillac CTS 2.0L engine oil leaks from the oil pan have been reported after oil pan removal and installation. This is often due to improper torque sequence or insufficient sealant.

2015-2018

Resolution: Clean all mating surfaces thoroughly. Use the correct sealant, apply it evenly. Tighten oil pan bolts in the correct sequence to the specified torque. Replace the oil pan gasket every time it is removed.

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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