Buick Vehicle Models Cascada 2016-2019 Torque Specifications
Buick Vehicle Models Cascada 2016-2019

Buick Vehicle Models Cascada 2016-2019 Torque Specifications

Complete Buick Vehicle Models Cascada 2016-2019 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

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

1.6l Engine

Torque specifications for 1.6L Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 26 ft-lbs (35 N·m)
Important Notes
Tighten in the specified sequence, and additional angle may be required. Always replace torque-to-yield head bolts.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten bolts in a criss-cross pattern. Do not overtighten to avoid damaging the cover or gasket.
3

Rocker Arms/Shafts Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten evenly in a criss-cross pattern to ensure equal pressure. Do not overtighten.
4

Camshaft Sprocket Bolt

M8 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure proper timing alignment before tightening. Use a tool to prevent the camshaft from rotating.

Engine Block

1

Main Bearing Bolts

M10 x 1.5
Torque Specification
1. 37 ft-lbs (50 N·m)
Important Notes
Tighten in the specified sequence. Ensure bearing caps are correctly positioned. May require an additional angle after torque.
2

Oil Pan Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten bolts in a criss-cross pattern. Use a new gasket to ensure a proper seal.
3

Oil Drain Plug Bolt

M14 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new crush washer for proper sealing. Do not overtighten to avoid damage to oil pan.

Connecting Rod

1

Connecting Rod Nuts

M9 x 1.25
Torque Specification
1. 37 ft-lbs (50 N·m)
Important Notes
Tighten in the specified sequence. Ensure bearing shells are correctly positioned and lubricated. May require an additional angle after initial torque.
2

Flywheel Bolts

M10 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Tighten in a star pattern. Use thread locker if specified. Ensure proper flywheel alignment.
3

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Use a tool to prevent crankshaft rotation. Ensure the pulley is seated correctly. May require an additional angle after torque.

Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper timing belt/chain tension after installation. Do not overtighten the tensioner.

Intake Exhaust

1

Intake Manifold Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten bolts in a criss-cross pattern. Use a new gasket to ensure a proper seal.
2

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten in a specified sequence from the center outwards. Use a new gasket to ensure a proper seal.
3

EGR Valve Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten evenly to ensure a proper seal and avoid leaks.
4

Throttle Body Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten evenly to avoid vacuum leaks.

Fuel System

1

Fuel Rail Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten evenly to ensure no fuel leaks.
2

Fuel Injector Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure proper alignment before tightening to prevent fuel leaks.

Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure threads are clean. Do not overtighten to avoid damaging the cylinder head or plug.
2

Ignition Coil Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten evenly to ensure proper electrical connection.

Cooling System

1

Water Pump Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Use a new gasket or sealant. Tighten in a criss-cross pattern to avoid leaks.
2

Water Pump Pulley Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten evenly, ensure pulley is seated properly.
3

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Use a new gasket or sealant. Tighten evenly to prevent coolant leaks.

Sensors

1

Knock Sensor Bolt

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure sensor is correctly positioned and the mounting surface is clean.
2

Coolant Temperature Sensor Bolt/Fitting

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten to ensure proper seal. Do not overtighten.
3

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure sensor is correctly positioned and the mounting surface is clean.
4

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure sensor is correctly positioned. Do not overtighten to avoid sensor damage.

Accessory Drive

1

Serpentine/Accessory Drive Belt Tensioner Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten to provide proper belt tension. Check belt alignment after installation.
2

Drive Belt Idler Pulley Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment of the idler pulley and smooth belt travel.

Oil Filter

1

Oil Filter Cap

N/A
Torque Specification
N/A
Important Notes
Hand-tighten only. Do not overtighten. May require a specific tool for removal.
2

Oil Filter Housing Bolt

N/A
Torque Specification
N/A
Important Notes
Hand-tighten only. Do not overtighten. May require a specific tool for removal.

6t45 Transmission

Torque specifications for 6t45 Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Tighten bolts in a crisscross pattern to ensure even clamping force. Always use new bolts if specified.

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten bolts in a crisscross pattern. Always use a new gasket.

Transmission Plugs

1

Transmission Drain/Fill Plugs

M18 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Always use new gaskets or seals with drain and fill plugs.

Drive Axle

1

Drive Axle/Half Shaft Bolts

M10 x 1.5
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Tighten bolts in a crisscross pattern to ensure even clamping force. Use new bolts if specified.

Cooler Lines

1

Transmission Cooler Line Fittings

M16 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use new sealing washers or O-rings. Be very careful to ensure proper thread engagement to avoid cross-threading.

Trs Sensor

1

Transmission Range Sensor (TRS) Mounting Bolts

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not overtighten as damage to sensor or threads could occur.

Valve Body

1

Valve Body Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten bolts in a crisscross pattern to ensure even clamping force to prevent leaks.

Tcm

1

Transmission Control Module (TCM) Mounting Bolts

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper grounding. Do not overtighten.

Bell Housing

1

Transmission Bell Housing Bolts

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Tighten bolts in a crisscross pattern. Ensure dowel pins are properly aligned.

Body

Torque specifications for Body

Hood And Fenders

1

Hood Hinge Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper hood alignment before final tightening. Apply threadlocker if specified in the service manual.
2

Fender Mounting Bolts

M8 x 1.25
Torque Specification
13 ft-lbs (18 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even pressure. Some bolts may be M6 x 1.0

Doors

1

Door Hinge Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper door alignment before final tightening. Apply threadlocker if specified in the service manual.
2

Door Latch/Striker Plate Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper latch engagement after tightening. Verify door closes and latches smoothly.

Bumpers And Lighting

1

Bumper Cover Mounting Bolts/Screws

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Torque may vary based on screw type and size. Some fasteners may be T25 or T30 Torx. Ensure proper alignment and flush mount.
2

Headlight/Taillight Mounting Bolts/Screws

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Some fasteners may be T25 Torx. Avoid over-tightening to prevent cracking the plastic housing.

Interior Components

1

Seat Mounting Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Tighten bolts in a criss-cross pattern. Ensure seats are properly aligned and securely fastened.
2

Seat Belt Mounting Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Critical for safety; use new bolts if removed. Some may be M12 x 1.75. Verify proper seat belt operation.
3

Dashboard Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Some fasteners may be M6 x 1.0. Ensure proper alignment and secure attachment to the body structure.
4

Interior Trim Panel Screws/Clips

N/A
Torque Specification
4.4 ft-lbs (6 N·m)
Important Notes
Hand-tighten is often sufficient. Avoid over-tightening to prevent damage to the trim or clips. Some screws may vary in size. This is an estimated value.

Windshield Wiper And Rear

1

Windshield Wiper Motor Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper alignment and secure attachment of the wiper motor to the body.
2

Rear Deck Lid/Trunk Lid Hinge Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper deck lid/trunk lid alignment before final tightening. Apply threadlocker if specified in the service manual.
3

Rear Deck Lid/Trunk Latch/Striker Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper latch engagement after tightening. Verify lid closes and latches smoothly.
4

Body Ground Strap Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper grounding connection. Some may be M6 x 1.0. Clean contact points before installation.

Brakes

Torque specifications for Brakes

Brake Calipers

1

Caliper Mounting Bolts

M12 x 1.75
Torque Specification
79 ft-lbs (107 N·m)
Important Notes
Apply thread-locking compound to the bolts. Ensure the caliper is properly aligned with the rotor before tightening. These bolts secure the caliper directly to the mounting bracket.
2

Brake Line Banjo Bolt

M10 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Use new copper crush washers on both sides of the banjo fitting. Ensure the brake line is properly positioned to avoid twisting during tightening. These bolts connect the brake lines to the calipers.
3

Brake Bleeder Screw

M7 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
This screw is a small, low-torque component. Over-tightening can damage the bleeder valve. Be very careful to use a properly sized wrench and torque to the correct value.

Caliper Brackets

1

Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
129 ft-lbs (175 N·m)
Important Notes
These are high-strength bolts. Ensure the bracket sits flush against the steering knuckle before tightening. These bolts secure the mounting bracket to the steering knuckle or hub assembly.

Brake Rotors

1

Rotor Retaining Screws

M6 x 1.0
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
These screws are primarily for positioning the rotor during assembly and prevent it from falling off. They are not for clamping force during braking. Estimated torque value; confirm with specific service manual if available.

Wheels

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
100 ft-lbs (135 N·m)
Important Notes
Tighten the lug nuts in a star pattern. This will ensure the wheel is evenly secured to the hub. Re-check torque after a short test drive. Do not use an impact wrench for final torquing.

Hydraulic System

1

Master Cylinder Line Fittings

M10 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Use new copper crush washers. Ensure the brake line is properly positioned to avoid twisting during tightening. Do not over tighten, or the fitting may crack or break. Estimated torque value; confirm with specific service manual if available.

Abs System

1

ABS Wheel Speed Sensor Bolt

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
These bolts are small and require a low torque to prevent damage to the sensor. This torque is estimated, refer to specific service manual if available. Ensure the sensor is properly positioned before tightening.

Drivetrain

Torque specifications for Drivetrain

Flywheel

1

Flywheel Bolts

M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure even clamping force. Use new bolts if recommended by the service manual.

Transmission Mounting

1

Transmission Mounting Bolts (to engine)

M12 x 1.75
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Check for proper alignment before tightening. Use new bolts if recommended.
2

Transmission Mount Bolt (to frame)

M12 x 1.75
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Ensure mount is properly seated.

Transmission Internals

1

Output Shaft Nut/Bolt (Transmission)

M14 x 1.5
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Ensure proper shaft alignment. Use new bolt or nut if required.
2

Output shaft flange to transmission bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Tighten in a cross pattern.

Transmission Exterior

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten in a cross pattern to ensure even pressure on the gasket. Do not over-torque.
2

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use new sealing washers if required. Do not over-torque.

Drive Axles

1

Drive Axle/Half Shaft Bolts (Inner CV Joint Flange)

M10 x 1.25
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Tighten evenly, use new bolts if required.
2

CV Joint/Axle Nut (Hub End)

M24 x 1.5
Torque Specification
118 ft-lbs (160 N·m)
Important Notes
Some applications may require a specific tightening procedure.

Driveshaft

1

Propeller/Drive Shaft Bolts

M10 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment, use new bolts if required. This does not apply to FWD models.
2

Axle Support Bearing Bolts (If Applicable)

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Make sure the support bearing is properly aligned. Only on applicable models.

Differential

1

Differential Ring Gear Bolts

M12 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Apply thread locker if specified. Use a cross pattern for even tightening. This does not apply to FWD models.
2

Differential Case/Carrier Bolts

M12 x 1.75
Torque Specification
60 ft-lbs (80 N·m)
Important Notes
Ensure proper alignment of the case and housing. This does not apply to FWD models.
3

Differential Drain/Fill Plug

M18 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Use new sealing washers if required. Do not over-torque. This does not apply to FWD models.

Transfer Case

1

Transfer Case Drain/Fill Plug

M18 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Use new sealing washers if required. Do not over-torque. Only on applicable models.

Final Drive

1

Final Drive Housing Bolts (If Applicable)

M12 x 1.75
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Ensure proper alignment of the housing and the mount. Only on applicable models.

Electrical

Torque specifications for Electrical

Ignition System

1

Ignition Coil Mounting Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper coil grounding for reliable spark generation. Over-tightening may damage the coil housing.

Starting System

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures starter alignment with the flywheel and good electrical ground.

Charging System

1

Alternator Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensures mechanical stability and proper grounding for efficient charging. Over-tightening may damage the alternator housing.

Battery System

1

Battery Terminal Nuts

M8 x 1.25
Torque Specification
4.4 ft-lbs (6 N·m)
Important Notes
Correct torque is critical for a secure electrical connection. Over-tightening can damage the battery posts.

Grounding System

1

Ground Strap/Cable Mounting Bolts (Engine Block/Chassis)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque is essential for maintaining a reliable ground connection. Value is estimated, refer to service manual for exact specs.

Engine Control System

1

ECU (Engine Control Unit) Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensures secure mounting and proper grounding for the ECU. Value is estimated, refer to service manual for exact specs.

Power Distribution

1

Fuse Box/Module Mounting Bolts

M5 x 0.8
Torque Specification
5.9 ft-lbs (8 N·m)
Important Notes
Ensures a secure mount and reliable ground. Value is estimated, refer to service manual for exact specs.

Wiring Harness System

1

Wiring Harness Connector Bracket/Support Bolts

M5 x 0.8
Torque Specification
5.9 ft-lbs (8 N·m)
Important Notes
Proper torque prevents damage to the wires and connectors. Value is estimated, refer to service manual for exact specs.

Emissions Sensors

Torque specifications for Emissions_sensors

Exhaust System

1

Exhaust Manifold to Cylinder Head Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure a proper seal between the exhaust manifold and cylinder head to prevent exhaust leaks. Tighten bolts in a criss-cross pattern.
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure a proper seal to prevent leaks that could affect O2 sensor readings.
3

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Proper torque is critical for a leak-free seal, preventing incorrect post-cat sensor readings.
4

Muffler to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Properly torquing these bolts prevents leaks in the exhaust system, although downstream from the sensors it is still important.

Oxygen Sensors

1

Oxygen (O2) Sensor Mounting Bolt/Stud

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper grounding and sensor depth within the exhaust stream. These are estimated values, as O2 sensor bolt sizes can vary slightly.
2

NOx Sensor Mounting Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the NOx sensor is properly mounted for correct readings. If the bolt size is larger, this may need to be adjusted.
3

DPF (Diesel Particulate Filter) Sensor Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the DPF sensor is properly mounted for correct readings. If the bolt size is larger, this may need to be adjusted. This torque is an estimate based on common DPF sensor bolts.

Intake System

1

Mass Air Flow (MAF) Sensor Mounting Bolt

M5 x 0.8
Torque Specification
0.74 ft-lbs (1 N·m)
Important Notes
Overtightening can crack the sensor housing, undertightening can cause leaks. This is an estimated value, as MAF sensor bolts can vary slightly.
2

Intake Air Temperature (IAT) Sensor Bolt/Screw

M5 x 0.8
Torque Specification
0.74 ft-lbs (1 N·m)
Important Notes
Overtightening could crack the sensor, undertightening can cause leaks. This is an estimated value, as IAT sensor bolts can vary slightly.

Evaporative Emissions System

1

EVAP Purge Valve Mounting Bolt

M5 x 0.8
Torque Specification
0.74 ft-lbs (1 N·m)
Important Notes
A leak in the system will cause erroneous codes and readings. This is an estimated value as purge valve bolts can vary slightly.
2

Fuel Tank Pressure Sensor Mounting Bolt

M5 x 0.8
Torque Specification
0.74 ft-lbs (1 N·m)
Important Notes
Proper torque is critical to avoid leaks and ensure accurate readings. This is an estimated value as fuel tank pressure sensor bolts can vary slightly.

Egr System

1

EGR Valve Bolts

M8 x 1.25
Torque Specification
0.74 ft-lbs (1 N·m)
Important Notes
Proper torque ensures a leak-free seal, preventing vacuum leaks and incorrect sensor readings.

Fuel

Torque specifications for Fuel

Fuel Rail

1

Fuel Rail Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure proper seating of the fuel rail before tightening bolts. Tighten to the specified torque value. Use a cross tightening pattern.
2

Fuel Injector Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure injectors are correctly seated before tightening. Tighten to the specified torque value.
3

Fuel Injector Rail Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the rail is seated properly before tightening. Tighten to the specified torque value.

Fuel Pump

1

Fuel Pump Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the pump is properly positioned before tightening the bolts.
2

High-Pressure Fuel Pump Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper seating of the high-pressure fuel pump before tightening bolts. Tighten to the specified torque value.
3

Fuel Level Sensor Retaining Screws/Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the fuel level sensor is correctly seated before tightening. Tighten to specified torque.

Fuel Filter

1

Fuel Filter Mounting Bolt/Nut

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten securely, ensuring the filter is properly aligned.

Fuel Tank

1

Fuel Tank Strap Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the tank is properly positioned before tightening.
2

Fuel Filler Neck Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment of the filler neck before tightening.

Fuel Lines

1

Fuel Line Fittings (Banjo Bolts or threaded fittings)

M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a back-up wrench when tightening fittings to prevent damage. Ensure proper alignment of the fuel line before tightening. This is an estimated value, confirm with the factory service manual for precise torque specs for your specific fitting type.

Fuel Pressure

1

Fuel Pressure Sensor Bolt

M5 x 0.8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the sensor is properly seated before tightening. Tighten to the specified torque value. This is an estimated value, confirm with the factory service manual if available.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M8 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure bolts and threads are clean and free of debris before torqueing. Verify bolt size before installation.

Ac Lines

1

A/C Line Fittings

Varies by fitting, Typically M8 x 1.25 to M16 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Always replace o-rings when disconnecting A/C lines and lightly lubricate the o-rings with the proper A/C compressor oil for proper sealing. Do not over-torque. This is an estimate, actual value may vary based on fitting size.

Ac Condenser

1

A/C Condenser Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
This is an estimated value based on typical mounting bolts. Ensure bolts are not cross threaded.

Ac Evaporator

1

A/C Evaporator Core Housing Bolts

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
This is an estimated value for small bolts. Be careful not to overtighten as the housing is often plastic.

Ac Expansion Valve

1

A/C Expansion Valve Bolts/Fittings

Varies by fitting, Typically M5 x 0.8 to M8 x 1.25
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
This is an estimated value. Ensure sealing surfaces and o-rings are in good condition. Use the correct size wrench for the fittings.

Hvac Blower Motor

1

HVAC Blower Motor Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
This is an estimated value. Ensure proper alignment of blower motor.

Hvac Control Module

1

HVAC Control Module/Blend Door Actuator Mounting Bolts

M5 x 0.8
Torque Specification
5.9 ft-lbs (8 N·m)
Important Notes
This is an estimated value for small screws. Do not over-tighten to avoid damaging components.

Suspension

Torque specifications for Suspension

Front Strut Assembly

1

Strut to Chassis Mounting Bolts

M10 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure proper alignment of the strut before tightening.
2

Strut to Steering Knuckle Bolts

M12 x 1.75
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Estimated value, verify with specific service manual. Ensure the brake line and ABS sensor wires are clear.

Front Control Arms

1

Control Arm to Frame/Subframe Bolts

M14 x 2.0
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure the vehicle is at ride height when final tightening.
2

Lower Control Arm to Ball Joint Bolt/Nut

M12 x 1.75
Torque Specification
41 ft-lbs (55 N·m)
Important Notes
Estimated value, verify with specific service manual.

Steering Components

1

Tie Rod End Nut

M10 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the tie rod end is correctly seated.
2

Steering Gear/Rack Mounting Bolts

M12 x 1.75
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure proper alignment of the steering rack before tightening.

Sway Bar System

1

Sway Bar Link Nut

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the sway bar link is seated properly.
2

Sway Bar Bushing Bracket Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Do not over-tighten these, as it may damage the bushings. Estimated value, verify with specific service manual.

Wheel Bearing Hub

1

Wheel Hub/Bearing Assembly Bolts

M12 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Estimated value, verify with specific service manual for any specific pattern or value for nuts. Ensure the hub is fully seated against the 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 value for lug nuts on a 2016-2019 Buick cascada?

The recommended torque value for lug nuts on a 2016-2019 Buick cascada IS 100 ft-lbs (136 Nm).

Q2

What type of torque wrench should I use for critical components on my 2016-2019 Buick cascada?

For critical components, it IS recommended to use a calibrated, click-type torque wrench that meets or exceeds the manufacturer's specifications.

Q3

How can I prevent over-tightening bolts and studs on my 2016-2019 Buick cascada?

To prevent over-tightening, follow the recommended torque specifications and use a properly calibrated torque wrench. Avoid using impact wrenches for final tightening, as they can easily over-torque.

Q4

What are the torque specifications for the cylinder head bolts on a 2016-2019 Buick cascada?

The torque specifications for the cylinder head bolts on a 2016-2019 Buick cascada vary depending on engine size. Please refer to your vehicle's service manual for the specific values.

Q5

Can I use aftermarket bolts and studs on my 2016-2019 Buick cascada?

Using aftermarket bolts and studs IS not recommended, as they may not meet the same specifications as original equipment (OE) components. It IS important to use genuine Buick replacement parts to ensure proper fit, function, and safety.

Q6

How often should I check the torque on critical components on my 2016-2019 Buick cascada?

It IS recommended to check the torque on critical components regularly, especially after major repairs or maintenance. Refer to your vehicle's service manual for specific intervals.

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 Cascada.

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

Torque Angle Meter

Used to measure the angle of rotation after reaching the specified torque value, ensuring proper bolt stretch and clamping force.

  • Digital display for precise measurements
  • Adjustable range for various torque requirements
  • Auto-zero and hold functions
Learn more
Service Procedures

Engine Cylinder Head Bolt Tightening Sequence

Provides the correct sequence and torque specifications for tightening the cylinder head bolts.

  • Clean the cylinder head and block mating surfaces.
  • Apply a thin layer of engine oil to the bolt threads.
  • Tighten the bolts in the specified sequence and torque values using a digital torque wrench.
  • Use a torque angle meter to ensure proper bolt stretch.
View full procedure

Suspension Control Arm Bolt Replacement

Outlines the procedure for replacing and tightening the control arm bolts to ensure proper suspension geometry.

  • Raise the vehicle and support it securely.
  • Remove the wheel and tire assembly.
  • Locate and remove the control arm bolts.
  • Install the new control arm bolts and tighten them to the specified torque using a digital torque wrench.
View full procedure
Technical Service Bulletins

Front Wheel Bearing Noise

2018-03-15

Addresses an issue with excessive noise coming from the front wheel bearings of certain 2016-2018 Cascada models.

2016-2018 Cascada

Resolution: Replace the affected wheel bearing assembly and tighten the bolts to the specified torque values.

Power Steering Pump Bolt Torque

2017-06-20

Provides revised torque specifications for the power steering pump bolts.

2017-2019 Cascada

Resolution: Update the torque specifications for the power steering pump bolts as outlined in the bulletin.

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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.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
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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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