Cadillac Vehicle Models CT4 2020-present Torque Specifications
Cadillac Vehicle Models CT4 2020-present

Cadillac Vehicle Models CT4 2020-present Torque Specifications

Complete Cadillac Vehicle Models CT4 2020-present torque specifications guide. Includes factory-specified torque values, torque sequences, and technical specifications for all components including body, brakes, drivetrain, electrical, emissions sensors, fuel, exhaust, HVAC, and suspension. Essential information for proper assembly and maintenance.

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

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Torque Calculator

Convert between different torque units

2.0l Engine

Torque specifications for 2.0L Engine

Cylinder Head

1

Cylinder Head Bolts

M12 x 1.75
Torque Specification
1. 26 ft-lbs (35 N·m) 2. 90°
Important Notes
Torque-to-yield bolts. Always replace when removed. Follow specific tightening sequence from service manual, initial torque and then angle torque.
2

Camshaft Cap Bolts

M8 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Tighten in sequence as recommended in service manual.
3

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Ensure rocker arms are correctly seated before tightening.
4

Valve Cover Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern to ensure even gasket compression. Value is converted from 89 inch-lbs to ft-lbs

Engine Block

1

Main Bearing Bolts

M10 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Tighten in specified sequence for even clamping force. Use an oil or assembly lubricant on the threads.
2

Oil Pan Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern to ensure even gasket compression. Value is converted from 89 inch-lbs to ft-lbs
3

Knock Sensor Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Value is estimated based on similar sized sensor bolts.
4

Oil Pressure Sensor

M10 x 1.0
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Value is estimated based on similar sized sensor bolts.
5

Coolant Temperature Sensor

M10 x 1.0
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Value is estimated based on similar sized sensor bolts. Do not over-tighten to avoid damage to the sensor.
6

Water Pump Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten bolts evenly in a crisscross pattern to avoid leaks, value is converted from 89 inch-lbs to ft-lbs.
7

Water Pump Pulley Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten bolts evenly.
8

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly, value is converted from 89 inch-lbs to ft-lbs.
9

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure starter is seated flush to the engine block.
10

Alternator Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure alternator is seated flush to the engine block and correctly aligned.
11

A/C Compressor Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the compressor is properly seated to the block and no stress is on mounting points.
12

Oil Drain Plug Bolt

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

Rotating Assembly

1

Connecting Rod Nuts

M9 x 1.0
Torque Specification
1. 30 ft-lbs (41 N·m) 2. 60°
Important Notes
Torque-to-yield nuts. Always replace when removed. Follow specific tightening sequence from service manual, initial torque and then angle torque.
2

Flywheel Bolts

M10 x 1.0
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Use a flywheel locking tool to prevent rotation while tightening. Apply thread locker to the bolts.

Intake And Exhaust

1

Intake Manifold Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern. Value is converted from 89 inch-lbs to ft-lbs
2

Throttle Body Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern. Value is converted from 89 inch-lbs to ft-lbs
3

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten in sequence from the center outwards.
4

EGR Valve Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Value is converted from 89 inch-lbs to ft-lbs

Fuel System

1

Fuel Rail Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Value is converted from 89 inch-lbs to ft-lbs, use new o-rings if needed.
2

Fuel Injector Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Value is converted from 89 inch-lbs to ft-lbs, do not over tighten to avoid damage.

Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Use anti-seize on spark plug threads, ensure correct spark plug gap, do not over tighten.
2

Ignition Coil Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Value is converted from 89 inch-lbs to ft-lbs

Timing And Drive

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Correct tensioning procedure must be followed after torquing.
2

Camshaft Sprocket Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a camshaft locking tool to ensure correct valve timing while torquing.
3

Crankshaft Pulley/Harmonic Balancer Bolt

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Use a crankshaft locking tool to prevent rotation while tightening.
4

Serpentine/Accessory Drive Belt Tensioner Bolt

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the tensioner moves freely after torquing.
5

Drive Belt Idler Pulley Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the pulley moves freely after torquing.

2.7l Engine

Torque specifications for 2.7L Engine

Cylinder Head

1

Cylinder Head Bolts

M12 x 1.75
Torque Specification
1. 26 ft-lbs (35 N·m)
Important Notes
Torque in specified sequence. Follow service manual for proper tightening pattern. Use new bolts if recommended.
2

Camshaft Bearing Cap Bolts

M8 x 1.25
Torque Specification
1. 7.4 ft-lbs (10 N·m) 2. 90°
Important Notes
Tighten bolts in the correct sequence in two steps. First torque to 10 N·m then tighten an additional 90 degrees.
3

Rocker Arms/Shafts Bolts

M6 x 1.0
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Ensure proper valve lash adjustment after torquing. Check that the rockers move freely.
4

Knock Sensor Bolt

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure sensor is correctly positioned before tightening. Do not over torque.
5

Cylinder Head Coolant Drain Plug

M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new sealing washer or sealant when installing.

Crankshaft And Rotating Assembly

1

Main Bearing Bolts

M10 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Tighten in the proper sequence. Use new bolts if recommended. Ensure bearing caps are properly seated before tightening.
2

Connecting Rod Nuts

M9 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Tighten in the proper sequence. Ensure bearing caps are properly seated before tightening.
3

Flywheel Bolts

M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the flywheel is correctly aligned with the crankshaft before tightening. Use new bolts if recommended.
4

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Use new bolt if recommended. The bolt may be tightened in steps or using an angle method, see service manual

Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure tensioner is properly engaged before torquing.
2

Camshaft Sprocket Bolt

M10 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper timing alignment before tightening. Do not over torque.
3

Variable Valve Timing (VVT) Actuator Bolt

M8 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure proper actuator alignment before tightening.

Oil System

1

Oil Pan Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a cross pattern. Do not overtighten.
2

Oil Filter Housing Bolt

M10 x 1.5
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Hand tight plus 1/4 turn. Ensure sealing surface is clean before installing.
3

Oil Drain Plug Bolt

M14 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use new sealing washer when installing.

Intake And Exhaust

1

Intake Manifold Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a cross pattern. Use new gasket if recommended.
2

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten in a center-out cross pattern. Use new gasket if recommended.
3

Throttle Body Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure throttle body is correctly positioned. Do not over torque.
4

EGR Valve Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure EGR valve is correctly positioned before tightening.

Fuel System

1

Fuel Rail Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure fuel rail is correctly positioned before tightening. Do not overtighten
2

Fuel Injector Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure fuel injectors are properly seated before tightening.

Cooling System

1

Water Pump Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a cross pattern. Use new gasket if recommended.
2

Water Pump Pulley Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure pulley is properly aligned before tightening.
3

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use new gasket or sealant when installing. Do not over torque.

Accessory Drive

1

Serpentine/Accessory Drive Belt Tensioner Bolt

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure tensioner is properly aligned before tightening. Do not over torque.
2

Drive Belt Idler Pulley Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the pulley is correctly positioned before tightening. Do not over torque.

Electrical

1

Ignition Coil Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper electrical connection after torquing.
2

Spark Plugs

M14 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Use a torque wrench with a spark plug socket. Do not over tighten.

Valve Cover

1

Valve Cover Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a cross pattern. Ensure valve cover is properly seated. Do not over tighten.

8l45 Transmission

Torque specifications for 8l45 Transmission

Transmission Housing

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Secures transmission to the vehicle's chassis/engine block. Critical for stability and alignment.
2

Bellhousing to Engine Bolts

M12 x 1.75
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Secures bellhousing to the engine block. A different torque value is used than the mounting bolts due to the material and stress.

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the oil pan to the transmission case. Tighten in a cross pattern to avoid leaks and gasket distortion.

Fluid Plugs And Lines

1

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Seals the transmission case for fluid filling and draining. Do not overtighten. May use a sealing washer.
2

Transmission Cooler Line Fittings

M16 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Connects the transmission to the fluid cooler. Use a flare nut wrench to avoid rounding fittings. Estimated value, always verify with manufacturer's specs.

Electronic Components

1

Transmission Control Module (TCM) Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the TCM to the transmission housing. Do not overtighten the mounting bolts.

Internal Components

1

Transmission Output Shaft Flange Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Attaches output shaft flange to the driveshaft. Ensure proper alignment. Estimated value, always verify with manufacturer's specs.
2

Transmission Mechatronics Unit/Valve Body Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the valve body to the transmission case. Tighten evenly. Estimated value, always verify with manufacturer's specs.

Body

Torque specifications for Body

Fuel System

1

Fuel Tank Strap Bolts

M10 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure fuel tank straps are properly aligned before tightening. Verify proper strap orientation to chassis mounts.
2

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use caution to avoid over-tightening and cracking the filler neck housing.

Door System

1

Door Hinge Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Proper door alignment is critical. Torque evenly. May need adjustment after initial torque.
2

Door Latch Striker Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Striker alignment affects door closure. Torque evenly.
3

Mirror Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper mirror positioning before final tightening.

Exterior Panels

1

Fender Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Check fender alignment and gap before final torque application.
2

Bumper Cover Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Be careful not to crack the plastic bumper cover, do not over-tighten.
3

Rear Spoiler Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Some spoiler designs may require slightly higher torque, consult the service manual if different bolt size or torque is encountered.

Hood System

1

Hood Hinge Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure hood alignment is correct before final tightening.

Lighting System

1

Headlight Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not over-tighten. Check headlight aim after installation.
2

Taillight Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Check the fit of taillight before final tightening

Interior Components

1

Seat Mounting Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Seat mounting bolts are critical for occupant safety. Always verify proper torque.
2

Body Control Module (BCM) Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not over-tighten. BCM components are sensitive to excess pressure.
3

Interior Trim Panel Fasteners/Screws

M4 x 0.7
Torque Specification
1.25 ft-lbs (1.7 N·m)
Important Notes
This is an estimated value. Torque value depends on the trim material. Avoid over-tightening to prevent damaging plastic components.

Wiper System

1

Windshield Wiper Motor Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Check wiper motor operation after installation.

Brakes

Torque specifications for Brakes

Caliper Mounting

1

Brake Caliper Bolts

M12 x 1.75
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
These bolts secure the caliper directly to the mounting bracket. Ensure both mating surfaces are clean.
2

Brake Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
129 ft-lbs (175 N·m)
Important Notes
These bolts secure the mounting bracket to the steering knuckle. Ensure the bracket is flush against the mounting surface.

Caliper Components

1

Brake Caliper Guide Pin Bolts

M8 x 1.25
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
These bolts secure the guide pins allowing the caliper to float, ensure smooth operation, estimated value.
2

Brake Hose Banjo Bolt

M10 x 1.0
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
This bolt secures the brake line to the caliper, and requires new crush washers every time the bolt is removed. Estimated value.

Rotor Mounting

1

Brake Disc/Drum Retaining Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
These bolts hold the brake disc/rotor or brake drum to the wheel hub. Do not over-tighten. These bolts do not bear the brunt of the braking force.

Abs Components

1

ABS Wheel Speed Sensor Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
These bolts secure the ABS wheel speed sensor to the knuckle, careful not to overtighten. Estimated Value

Drivetrain

Torque specifications for Drivetrain

Engine Interface

1

Flywheel Bolts

M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Tighten bolts in a star pattern. Always use new bolts. Ensure the flywheel is properly aligned before tightening.
2

Torque Converter Bolts

M10 x 1.5
Torque Specification
48 ft-lbs (65 N·m)
Important Notes
Tighten bolts in a star pattern to ensure even clamping. Always follow the factory torque specs if provided.
3

Clutch Pressure Plate Bolts

M8 x 1.25
Torque Specification
19 ft-lbs (26 N·m)
Important Notes
Tighten bolts in a star pattern to ensure even clamping. Always follow the factory torque specs if provided. For manual transmissions only

Transmission

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure proper alignment before tightening. Torque evenly to avoid stressing the transmission housing.
2

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten bolts in a criss-cross pattern. Do not overtighten; pan may warp. Use a new gasket when replacing the pan.
3

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use new sealing washers. Do not overtighten; the case can crack.
4

Transmission Output Shaft Nut/Bolt

M20 x 1.5
Torque Specification
110 ft-lbs (150 N·m)
Important Notes
Use a new nut/bolt when replacing. Follow factory service manual instructions if available.

Driveshaft And Axles

1

Drive Axle/Half Shaft Bolts (Transmission Side)

M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure the axle is properly seated before tightening. Use new bolts when specified. Apply thread locker if specified.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Specification
118 ft-lbs (160 N·m)
Important Notes
Critical for wheel bearing preload. Use a new nut if specified by the service manual. Follow service manual for additional steps.
3

Propeller/Drive Shaft Bolts

M10 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even clamping. Use new bolts when specified.

Differential And Transfer Case

1

Differential Mounting Bolts

M14 x 2.0
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
Tighten bolts in a criss-cross pattern. Ensure the differential is properly aligned before tightening.
2

Differential Drain/Fill Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Use new sealing washers. Do not overtighten; the case can crack.
3

Transfer Case Mounting Bolts

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure proper alignment before tightening. For all-wheel drive models.
4

Transfer Case Drain/Fill Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Use new sealing washers. Do not overtighten; the case can crack. For all-wheel drive models.

Electrical

Torque specifications for Electrical

Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Ensure spark plug threads are clean and lightly lubricated with anti-seize compound. Do not overtighten.
2

Ignition Coil Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure ignition coil is seated properly before tightening bolts. Do not over-tighten.

Starting Charging System

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure starter motor is properly aligned before tightening the bolts. Use proper bolt sequence if recommended in service manual.
2

Alternator Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure correct alignment of the alternator and belt before torquing. Use proper bolt sequence if recommended in service manual.

Battery System

1

Battery Terminal Nuts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not over-tighten. Ensure terminals are clean and free of corrosion before tightening.

Electronic Control Modules

1

Engine Control Module (ECM) Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated torque. Tighten in a cross pattern. Ensure mounting surfaces are clean and mating properly.
2

Transmission Control Module (TCM) Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated torque. Ensure mounting surfaces are clean and mating properly.
3

Body Control Module (BCM) Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated torque. Ensure proper module alignment before tightening.

Power Distribution

1

Fuse Box/Power Distribution Box Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated torque. Ensure the box is properly seated before tightening.

Grounding System

1

Ground Point Bolts/Studs (M8/M10)

M8 x 1.25 / M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
For larger ground points on the body or engine. Ensure contact surfaces are clean.
2

Ground Point Bolts/Studs (M6)

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
For smaller ground points. Ensure contact surfaces are clean.

Wiring Harness Connectors

1

Wiring Harness Connector Retaining Bolt/Screw

M4 x 0.7
Torque Specification
5.9 ft-lbs (8 N·m)
Important Notes
Estimated torque. Do not over-tighten these, as they can break the connector.

Sensors

1

Sensor Mounting Bolts/Screws (e.g., Camshaft, Crankshaft)

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated torque. Ensure sensor is properly seated before tightening.

Emissions Sensors

Torque specifications for Emissions_sensors

Exhaust System

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure even torque application to prevent leaks.
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure even torque application to prevent leaks.
3

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure even torque application to prevent leaks.
4

Muffler to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure even torque application to prevent leaks.
5

Oxygen (O2) Sensor

M18 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Use anti-seize on sensor threads. Estimated value, confirm with manufacturer guidelines.
6

NOx Sensor Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure even torque application to prevent leaks.
7

EGT (Exhaust Gas Temperature) Sensor Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure even torque application to prevent leaks.

Intake System

1

Throttle Body Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure even torque to prevent vacuum leaks. 89 inch-lbs converted to ft-lbs.
2

Intake Manifold Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure even torque to prevent vacuum leaks. 89 inch-lbs converted to ft-lbs.
3

Mass Airflow (MAF) Sensor Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not overtighten, use a calibrated torque wrench. 89 inch-lbs converted to ft-lbs.
4

MAP (Manifold Absolute Pressure) Sensor Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not overtighten, use a calibrated torque wrench. 89 inch-lbs converted to ft-lbs.

Egr System

1

EGR Valve Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper sealing of the EGR valve to the manifold. 89 inch-lbs converted to ft-lbs.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold

1

Exhaust Manifold/Header to Cylinder Head Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten in a criss-cross pattern starting from the center bolts. Ensure even pressure distribution.
2

Exhaust Manifold/Header Studs (if applicable)

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Tighten studs before installing manifold. Ensure studs are fully seated but not over-tightened. Estimated value.

Exhaust Downpipe

1

Exhaust Pipe to Exhaust Manifold/Header Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten in a criss-cross pattern to ensure even clamping force and prevent leaks. Always use new gaskets.
2

Exhaust Flange Bolts/Nuts

M10 x 1.5
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Tighten in a criss-cross pattern. May require new gaskets and/or crush washers. Estimated value.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten in a criss-cross pattern. Always replace the gaskets for a proper seal.
2

Catalytic Converter to Intermediate Pipe Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten in a criss-cross pattern. Always replace gaskets for a proper seal.

Muffler

1

Muffler to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten in a criss-cross pattern. Use new gaskets to prevent leaks.

Sensors

1

Oxygen Sensor (Upstream and Downstream)

M18 x 1.5
Torque Specification
32 ft-lbs (43 N·m)
Important Notes
Ensure sensor threads are clean and lubricated with anti-seize if applicable. Do not over-tighten. Estimated value.

Hangers Clamps

1

Exhaust Hanger/Bracket Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure rubber isolators are in good condition. Do not over-tighten. Estimated value.
2

Exhaust Band Clamp Nut/Bolt

M8 x 1.25
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Tighten to specified torque, ensuring even clamping force. Use proper clamp size for the exhaust pipe diameter. Estimated value.

Fuel

Torque specifications for Fuel

Fuel Rail

1

Fuel Rail Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
These bolts secure the fuel rail to the intake manifold or cylinder head. Ensure proper torque to prevent leaks and maintain fuel pressure.
2

Fuel Pressure Sensor Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the fuel pressure sensor to the fuel rail. Ensure proper torque to maintain a leak-free seal and accurate pressure readings.

Fuel Injectors

1

Fuel Injector Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the fuel injectors to the fuel rail or intake manifold. Correct torque ensures a proper seal and injector positioning.

Fuel Pump

1

Fuel Pump Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Bolts secure the fuel pump assembly to the fuel tank. Proper torque prevents leaks and ensures secure mounting.
2

Fuel Tank Sending Unit/Access Panel Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
These bolts secure the fuel tank sending unit or access panel to the fuel tank. Ensure proper torque to prevent fuel leaks or vapor escape. Value is estimated based on similar components.

Fuel Filter

1

Fuel Filter Mounting Bolt/Nut

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secures the fuel filter in place, typically along with a clamping bracket. Correct torque ensures a proper seal and prevents leaks.

Fuel Filler

1

Fuel Filler Neck Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
These bolts secure the fuel filler neck to the vehicle's body. Proper torque prevents fuel and vapor leaks.

High Pressure Fuel Pump

1

High-Pressure Fuel Pump Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Bolts secure the high-pressure fuel pump to the engine or mounting bracket. Proper torque ensures secure mounting.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure bolts are tightened evenly to prevent binding. Use new bolts if possible.
2

A/C Compressor Clutch Coil Connector Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not over tighten. It is advisable to use a new bolt.

Ac Lines

1

A/C Line Fittings

N/A
Torque Specification
N/A
Important Notes
Hand-tighten, then use an additional fraction of a turn as specified by the manufacturer's service manual for the specific fitting type. Specific procedure and additional turn degrees vary depending on the fitting. Refer to service manual for exact procedure for the specific lines.

Ac Condenser

1

A/C Condenser Mounting Bolts/Screws

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly to prevent bending or stress on the condenser.
2

A/C Condenser Fan Assembly Bolts/Screws

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly to prevent stress or vibration.

Ac Evaporator

1

A/C Evaporator Core Housing Bolts/Screws

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Be careful not to overtighten, as these screws are going into plastic. Use a low-range torque wrench for accuracy.

Ac Expansion Valve

1

A/C Expansion Valve Mounting Bolts/Screws

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Some expansion valves are held with the lines only, use this only if the expansion valve is held with a bracket.

Hvac Control Module

1

HVAC Control Module Mounting Bolts/Screws

M4 x 0.7
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use a low-range torque wrench for accuracy.

Blower Motor

1

Blower Motor Mounting Bolts/Screws

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly to avoid vibration.

Actuators

1

Mode Door Actuator Bolts/Screws

M4 x 0.7
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use a low-range torque wrench, be careful not to overtighten.
2

Recirculation Actuator Bolts/Screws

M4 x 0.7
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use a low-range torque wrench, be careful not to overtighten.

Ac Pressure Switch

1

A/C Pressure Switch

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Proper torque ensures an air-tight seal. Do not overtighten.

Suspension

Torque specifications for Suspension

Front Struts Shocks

1

Strut/Shock Absorber Upper Mounting Bolts

M10 x 1.5
Torque Specification
41 ft-lbs (55 N·m)
Important Notes
Ensure bolts are tightened evenly.
2

Strut/Shock Absorber Lower Mounting Bolts

M12 x 1.75
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
These bolts connect the strut to the steering knuckle.

Front Control Arms

1

Control Arm Frame/Subframe Mounting Bolts

M14 x 2.0
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
Ensure bolts are tightened evenly to prevent binding.
2

Lower Control Arm Ball Joint Pinch Bolt

M12 x 1.75
Torque Specification
48 ft-lbs (65 N·m)
Important Notes
This bolt clamps the ball joint stud. An estimated value. Always verify.
3

Upper Control Arm Frame/Subframe Mounting Bolts

M12 x 1.75
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Ensure bolts are tightened evenly to prevent binding.

Front Steering

1

Tie Rod End Nut

M12 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
This nut secures the tie rod end to the steering knuckle.
2

Steering Gear/Rack Mounting Bolts

M12 x 1.75
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
These bolts secure the steering rack to the subframe.

Front Sway Bar

1

Sway Bar Link Nut

M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Secures the sway bar link to the sway bar and strut/control arm.
2

Sway Bar Mounting Bracket Bolts/Clamps

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secures the sway bar mounting brackets to the subframe.

Front Ball Joints

1

Ball Joint Nut

M14 x 1.5
Torque Specification
63 ft-lbs (85 N·m)
Important Notes
Secures the ball joint stud to the knuckle or control arm.

Rear Suspension

1

Rear Trailing Arm Mounting Bolts

M14 x 2.0
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
Secures the trailing arm to the chassis or subframe.
2

Rear Lower Control Arm Inner/Outer Bolts

M14 x 2.0
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
Connects the lower control arm to the chassis/frame and steering knuckle.

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

What IS the recommended torque for lug nuts on a 2020-Present Cadillac ct4?

The recommended torque for lug nuts on a 2020-Present Cadillac ct4 IS 140 ft-lbs.

Q2

What IS the correct torque for spark plugs on a 2020-Present Cadillac ct4?

The recommended torque for spark plugs on a 2020-Present Cadillac ct4 IS 25 ft-lbs.

Q3

What tools are recommended for accurate torque application?

A calibrated torque wrench IS essential for accurate torque application. Use a torque wrench with the appropriate range and drive size for the specified torque value.

Q4

IS it safe to use impact wrenches for torque-critical fasteners?

Impact wrenches should not be used for torque-critical fasteners. Impact wrenches can overtighten or damage fasteners, compromising the integrity of the connection.

Q5

What are the consequences of overtightening bolts?

Overtightening bolts can stretch or damage the threads, weaken the bolt, and lead to bolt failure. It can also damage the surrounding components due to excessive stress.

Q6

How do I prevent bolt corrosion?

To prevent bolt corrosion, clean the bolt and threads thoroughly before assembly. Apply anti-seize lubricant to the threads and tighten to the specified torque. Protect the bolt from moisture and environmental exposure by using corrosion-resistant coatings or caps.

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

Digital Torque Wrench (10-100 Nm)

Essential for tightening fasteners to precise torque specifications, preventing damage and ensuring proper assembly. This range IS suitable for many applications on the ct4.

  • Digital display for accurate readings
  • Audible alarm when target torque IS reached
  • Multiple units (Nm, ft-lb, in-lb)
  • Reversible ratcheting mechanism
Learn more
Service Procedures

Engine Bolt Tightening Sequence

Step-by-step guide for tightening engine bolts in the correct sequence and torque specifications.

  • Clean all bolt threads and bolt holes.
  • Apply a small amount of threadlocker to each bolt.
  • Tighten the bolts in the following sequence: [sequence diagram]
  • Torque each bolt to the specified value: - Engine head bolts: 80 Nm (60 ft-lb) - Intake manifold bolts: 25 Nm (19 ft-lb) - Exhaust manifold bolts: 30 Nm (22 ft-lb) - Oil pan bolts: 14 Nm (10 ft-lb)
  • Double-check all torque values using a torque wrench.
View full procedure

Suspension Bolt Tightening Guide

Comprehensive guide to tightening suspension bolts on the ct4, including torque specifications.

  • Raise the vehicle and secure it on jack stands.
  • Remove the wheel and tire.
  • Clean all bolt threads and bolt holes.
  • Apply a small amount of anti-seize compound to each bolt.
  • Tighten the bolts in the following sequence: [sequence diagram]
  • Torque each bolt to the specified value: - Control arm bolts: 100 Nm (74 ft-lb) - Ball joint bolts: 55 Nm (40 ft-lb) - Tie rod end bolts: 35 Nm (26 ft-lb) - Sway bar end link bolts: 18 Nm (13 ft-lb)
  • Double-check all torque values using a torque wrench.
View full procedure
Technical Service Bulletins

Rear Suspension Bolt Torque Update

2023-06-15

Revised torque specifications for the rear suspension bolts on 2020-2022 ct4 models.

2020-2022 ct4

Resolution: Refer to the updated torque specifications in the service manual: - Rear control arm bolts: 120 Nm (89 ft-lb) - Rear knuckle bolts: 160 Nm (118 ft-lb)

Engine Mount Bolt Recall

2022-12-20

Safety recall for a potential issue with engine mount bolts on 2020-2023 ct4 models.

2020-2023 ct4

Resolution: Contact an authorized Cadillac dealer to schedule an inspection and replacement of the affected bolts.

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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.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
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About the Author

Expert automotive knowledge and experience

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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