Cadillac CTS 2014-2019 6.2L Engine Bolt Torque Specifications & Fastener Values
Cadillac CTS 2014-2019

Cadillac CTS 2014-2019 6.2L Engine Bolt Torque Specifications

Comprehensive guide to torque specifications for various bolts on the 6.2L engine found 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

Fasteners associated with securing the cylinder heads to the engine block, crucial for combustion sealing.

1

Cylinder Head Bolts

M11 x 1.5
Important Notes
Always follow the specific torque sequence outlined in the service manual. Use new bolts, they may be torque-to-yield.

Engine Block

Fasteners related to the engine block components, including main bearing caps and oil pan.

1

Main Bearing Bolts

M10 x 1.5
Important Notes
Main bearing bolts are critical for crankshaft support. Follow the torque sequence.
2

Oil Pan Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Torque bolts in a crisscross pattern to ensure even sealing. Inch-pounds was converted to ft-lbs.
3

Oil Drain Plug

M12 x 1.75
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Use a new crush washer every time.

Connecting Rods

Fasteners for securing the connecting rods to the crankshaft.

1

Connecting Rod Nuts

M9 x 1.25
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Ensure proper orientation of connecting rod cap. Confirm thread pitch.

Rotating Assembly

Fasteners related to the crankshaft and flywheel/flexplate components.

1

Flywheel Bolts

M10 x 1.5
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Use new bolts if specified. Ensure proper alignment of the flywheel.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Value
74 ft-lbs (100 N·m)
Important Notes
The harmonic balancer must be properly seated. Some vehicles will have additional angle specs.

Valvetrain

Fasteners related to the valve train system, including valve covers, rocker arms, and camshaft components.

1

Valve Cover Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Torque bolts in a crisscross pattern to avoid leaks.
2

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Ensure proper rocker arm alignment before torquing.
3

Camshaft Sprocket Bolt

M10 x 1.5
Torque Value
75 ft-lbs (102 N·m)
Important Notes
Ensure proper camshaft timing before torquing.
4

Variable Valve Timing (VVT) Solenoid Bolt

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

Timing System

Fasteners related to the timing belt or chain and associated tensioner.

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure correct tensioner operation before torquing.

Intake System

Fasteners related to the intake manifold, throttle body, and associated components.

1

Intake Manifold Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Tighten in a crisscross pattern.
2

Throttle Body Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Use a new gasket if specified. Inch-pounds converted to ft-lbs.
3

PCV Valve Mounting Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Ensure proper seating of the PCV valve. Inch-pounds converted to ft-lbs.

Exhaust System

Fasteners for securing the exhaust manifolds or headers to the cylinder heads.

1

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Torque in a sequence from center outwards.
2

Exhaust Manifold to Cylinder Head Studs

M8 x 1.25
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Use a thread locker if needed.

Fuel System

Fasteners related to fuel rail and fuel injectors.

1

Fuel Rail Bolts

M6 x 1.0
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure proper fuel rail alignment before tightening.
2

Fuel Injector Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Ensure proper fuel injector seating. Inch-pounds was converted to ft-lbs.

Ignition System

Fasteners related to spark plugs and ignition coils.

1

Spark Plugs

M14 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Use a spark plug socket to prevent damage. Ensure proper thread engagement.
2

Ignition Coil Bolt

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

Cooling System

Fasteners related to the water pump, thermostat housing, and coolant sensors.

1

Water Pump Bolts

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

Water Pump Pulley Bolts

M6 x 1.0
Torque Value
18 ft-lbs (25 N·m)
Important Notes
Ensure proper pulley alignment. Values were estimated, use a specific manual if available.
3

Thermostat Housing Bolts

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Use a new gasket if specified. Inch-pounds converted to ft-lbs.
4

Coolant Temperature Sensor

M12 x 1.5
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensure proper sensor seating and use sealant if needed. Values were estimated.

Sensor System

Fasteners related to various engine sensors, including camshaft, crankshaft, knock, and oil pressure.

1

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Ensure proper sensor positioning. Inch-pounds converted to ft-lbs.
2

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Ensure proper sensor positioning. Inch-pounds was converted to ft-lbs.
3

Knock Sensor Bolt

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensure proper sensor seating. Use a torque wrench to avoid damage.
4

Oil Pressure Sensor/Switch Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Ensure proper sensor seating and use sealant if needed. Inch-pounds converted to ft-lbs.

Oil System

Fasteners related to the oil filter housing.

1

Oil Filter Housing Bolt

N/A
Torque Value
0 ft-lbs (0 N·m)
Important Notes
Hand tighten only. Do not overtighten.

Engine Mounts

Fasteners used to mount engine to chassis.

1

Engine Mount Bolts (Block Side)

M12 x 1.75
Important Notes
Use new bolts and follow torque-to-yield procedure.

Accessory Drive

Fasteners related to mounting accessory components.

1

Power Steering Pump Mounting Bolts

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

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 when working on my 6.2L engine?

Torque specifications are critical to ensure proper clamping force between components. Under-torquing can lead to leaks and loosening, while over-torquing can damage threads, gaskets, or even warp components like the cylinder head. For example, if the cylinder head bolts aren't torqued correctly, you risk a blown head gasket and severe engine damage.

Q2

Should I use new bolts when reassembling parts on my 6.2L engine?

It's highly recommended to use new bolts, especially for critical components like the cylinder head, connecting rods, and main bearing caps. Many bolts are designed for one-time use, and reusing them can compromise their clamping strength due to stretching or fatigue. Always refer to the service manual for bolt replacement recommendations.

Q3

What type of lubricant should I use on bolts during engine assembly?

The service manual specifies which bolts require lubrication and the type to be used (often engine oil or an anti-seize compound). Using the incorrect lubricant can drastically affect the achieved torque reading. For instance, using anti-seize on a bolt that should be dry can cause over-torquing, potentially leading to bolt failure. Follow the specific instructions for each bolt.

Q4

What is the difference between foot-pounds and inch-pounds for torque?

Foot-pounds (ft-lbs) is a unit of torque commonly used for larger fasteners, while inch-pounds (in-lbs) are used for smaller fasteners requiring lower torque values. 1 ft-lb equals 12 in-lbs. For example, intake manifold bolts are often torqued in in-lbs, whereas crankshaft bolts are typically torqued in ft-lbs.

Q5

Do I need to torque bolts in a specific pattern?

Yes, absolutely! Many components like cylinder heads, intake manifolds, and exhaust manifolds require a specific torque sequence to evenly distribute pressure. This prevents warping and ensures a proper seal. Refer to your service manual for the exact pattern. For example, cylinder head bolts are generally torqued from the center outwards in multiple stages.

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 capable of measuring torque values within the specified range for the 6.2L engine.

  • Click-type or digital
  • Range: 10-150 ft-lbs (approximate)
Learn more

Torque Wrench (3/8" Drive)

A calibrated torque wrench capable of measuring lower torque values for smaller fasteners on the 6.2L engine.

  • Click-type or digital
  • Range: 5-80 ft-lbs (approximate)
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets, including deep and shallow varieties, to fit all fasteners on the 6.2L engine.

  • Sizes: 8mm to 24mm (approximate)
  • 1/4", 3/8", and 1/2" drive sizes
Learn more

Socket Set (SAE)

A set of SAE sockets for any additional fasteners on the 6.2L engine.

  • Sizes: 5/16" to 1" (approximate)
  • 1/4", 3/8", and 1/2" drive sizes
Learn more

Torque Angle Meter

A tool used to measure the angle of rotation after an initial torque is applied.

  • Digital or mechanical
  • Accurate angle measurement
Learn more

Extension Bars

Various length extension bars to reach fasteners in recessed locations.

  • 1/4", 3/8", and 1/2" drive sizes
  • Various lengths available
Learn more

Universal Joint

A universal joint to access fasteners at an angle.

  • 1/4", 3/8", and 1/2" drive sizes
  • Allows for angled access
Learn more
Service Procedures

Cylinder Head Bolt Torque Procedure

Procedure for tightening cylinder head bolts to the specified torque and angle using the correct sequence.

  • Clean all bolt threads and mating surfaces.
  • Apply a light coat of engine oil to the bolt threads and under the bolt heads.
  • Install the cylinder head bolts finger tight.
  • Torque all bolts to the first pass torque specification in the proper sequence.
  • Tighten all bolts to the final torque specification in the proper sequence.
  • Use a torque angle meter to rotate each bolt to the required angle specification in sequence.
View full procedure

Intake Manifold Bolt Torque Procedure

Procedure for tightening the intake manifold bolts to the specified torque using the proper sequence.

  • Clean all bolt threads and mating surfaces.
  • Install the intake manifold bolts finger tight.
  • Torque all bolts to the first pass torque specification in the proper sequence.
  • Tighten all bolts to the final torque specification in the proper sequence.
View full procedure

Connecting Rod Bolt Torque Procedure

Procedure for tightening the connecting rod bolts to the specified torque and angle using the proper sequence.

  • Clean all bolt threads and mating surfaces.
  • Apply a light coat of engine oil to the bolt threads and under the bolt heads.
  • Install the connecting rod bolts finger tight.
  • Torque all bolts to the first pass torque specification in the proper sequence.
  • Tighten all bolts to the final torque specification in the proper sequence.
  • Use a torque angle meter to rotate each bolt to the required angle specification in sequence.
View full procedure

Exhaust Manifold Bolt Torque Procedure

Procedure for tightening the exhaust manifold bolts to the specified torque using the proper sequence.

  • Clean all bolt threads and mating surfaces.
  • Install the exhaust manifold bolts finger tight.
  • Torque all bolts to the specified torque in the proper sequence.
View full procedure
Technical Service Bulletins

Incorrect Cylinder Head Bolt Torque Specification

2017-05-15

Some early service manuals had an incorrect cylinder head bolt torque specification listed for the 6.2L engine, leading to potential head gasket issues.

2014-2016

Resolution: Verify the cylinder head bolt torque specifications with the latest service information. Re-torque heads as required to current specs.

Exhaust Manifold Bolt Loosening Issue

2018-11-20

Reports of exhaust manifold bolts loosening over time due to thermal cycling, leading to exhaust leaks.

2014-2019

Resolution: Inspect and retorque exhaust manifold bolts to specification. Use a thread locking compound if loosening persists.

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