Buick Vehicle Models Enclave 2008-2017 Torque Specifications
Buick Vehicle Models Enclave 2008-2017

Buick Vehicle Models Enclave 2008-2017 Torque Specifications

Complete Buick Vehicle Models Enclave 2008-2017 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

3.6l Engine

Torque specifications for 3.6L Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 18 ft-lbs (25 N·m)
Important Notes
Apply torque in a specified sequence. Always consult the service manual for the correct sequence diagram.

Engine Block

1

Main Bearing Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Torque in the proper sequence, refer to the specific service manual for the correct sequence diagram.
2

Connecting Rod Nuts

M9 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Torque all connecting rod nuts evenly, use new nuts if necessary.
3

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
4

Knock Sensor Bolt

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

Rotating Assembly

1

Flywheel Bolts

M10 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Use new bolts if recommended by manufacturer.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Use a crankshaft holding tool to prevent crankshaft rotation during tightening. Check for any damage on the pulley before installing.

Oil System

1

Oil Pan Bolts

M6 x 1.0
Torque Specification
8.8 ft-lbs (12 N·m)
Important Notes
Torque in a criss-cross pattern for even gasket compression. Use a new gasket if required.
2

Oil Filter Housing Cap

N/A - Threaded Cap
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten by hand until snug, then use a wrench to finish. Do not overtighten.
3

Oil Drain Plug

M14 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new crush washer or sealing ring for proper sealing.

Valve Train

1

Valve Cover Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Torque in a criss-cross pattern to ensure even gasket pressure. Do not overtighten.
2

Camshaft Sprocket Bolts

M8 x 1.25
Torque Specification
75 ft-lbs (101 N·m)
Important Notes
Use a camshaft holding tool to prevent camshaft rotation during tightening. Ensure the sprockets are correctly aligned.
3

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Torque bolts evenly.
4

Variable Valve Timing (VVT) Solenoid Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)

Timing System

1

Timing Chain Tensioner Bolt

M8 x 1.25
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure tensioner is properly engaged before tightening.

Intake System

1

Intake Manifold Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Torque in the correct sequence, typically from the center outwards. Use a new gasket if necessary.
2

Throttle Body Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the throttle body gasket is properly aligned.
3

EGR Valve Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Use a new gasket if required. Ensure proper alignment before tightening.
4

Fuel Rail Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure fuel injectors are properly installed before securing the fuel rail. Check for leaks after installation.
5

Fuel Injector Bolts

M6 x 1.0 or Retaining Clips
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
For bolted injectors, torque to spec. For clips, ensure they are fully seated. Inspect for proper alignment and sealing.

Exhaust System

1

Exhaust Manifold/Header Bolts

M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Use new gaskets. Torque in a sequence moving from the center outwards to ensure an even seal.
2

Exhaust Manifold to Exhaust Pipe Stud

M8
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Use new hardware and tighten evenly.

Cooling System

1

Water Pump Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new gasket or sealant. Tighten evenly.
2

Water Pump Pulley Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the pulley is correctly seated against the water pump flange.
3

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use a new gasket or o-ring. Ensure the thermostat is correctly seated.
4

Coolant Temperature Sensor Bolt/Fitting

M12 x 1.5 or Threaded Fitting
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
If a threaded fitting, do not over tighten. Use thread sealant if necessary.

Ignition System

1

Ignition Coil Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the coil is correctly seated on the spark plug.
2

Spark Plugs

M14 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Do not overtighten, as this can damage the cylinder head or spark plug.

Accessory Drive

1

Serpentine/Accessory Drive Belt Tensioner Bolt

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

Engine Mounts

1

Engine Mount Bolts (to Engine)

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure all mounts are properly aligned before fully tightening.

Sensors

1

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)

6t75 Transmission

Torque specifications for 6t75 Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Secures the transmission housing to the engine block or frame. Ensure bolts are clean and threads are in good condition. These bolts are typically high-grade.

Transmission Case

1

Transmission Case Bolts (General)

M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
General case assembly bolts. Torque spec is an estimated value, always check the service manual. Uneven tightening may distort the case. These are assumed to be M10 bolts.

Transmission Pan

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
8.8 ft-lbs (12 N·m)
Important Notes
Attaches the transmission oil pan to the transmission case. Use a criss-cross tightening pattern to avoid warping the pan.

Fluid Plugs

1

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Seals the transmission fluid drain and fill ports. Use new sealing washers if recommended by service manual.

Drive Axle

1

Drive Axle/Half Shaft Bolts

M10 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Connects the drive axles to the transmission output flanges. Ensure bolts are clean and threads are in good condition. These bolts are critical for safety.

Valve Body

1

Valve Body Bolts (Internal)

M6 x 1.0
Torque Specification
8.8 ft-lbs (12 N·m)
Important Notes
Attaches the valve body to the transmission case. Use a criss-cross pattern to ensure even pressure and prevent damage. Estimated value. These are assumed to be small M6 bolts.

Cooler Lines

1

Transmission Cooler Line Fittings

Varies by fitting type
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Connects transmission cooler lines to the transmission case. Estimated value. Torque will vary based on fitting style and size.

Sensors And Switches

1

Input/Output Speed Sensor Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Mounts speed sensors to the transmission case. Do not over-tighten. Estimated value. Typically uses small bolts.
2

Transmission Range/Mode Switch/Sensor Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Mounts the range/mode switch or sensor to the transmission case. Do not over-tighten. Estimated value. Typically uses small bolts.
3

Transmission Internal Filter Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Mounts the internal transmission filter. Ensure a proper seal. Do not over-tighten. Estimated value. Typically uses small bolts.

Body

Torque specifications for Body

Bumper System

1

Front Bumper Cover Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar applications. Ensure bolts are properly aligned before tightening. Check for any binding before fully torquing.
2

Rear Bumper Cover Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar applications. Ensure bolts are properly aligned before tightening. Check for any binding before fully torquing.

Exterior Panels

1

Fender Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value based on similar applications. Ensure proper panel alignment before final torque. Apply even torque to prevent panel distortion.
2

Hood Hinge Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on similar applications. Ensure proper hood alignment and smooth operation after tightening. May require adjustment after torquing.
3

Hood Latch Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar applications. Ensure the hood latch engages properly and releases easily after tightening. Check for proper alignment.

Door System

1

Door Hinge Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on similar applications. Ensure doors open and close smoothly after tightening. Proper alignment is critical for even wear.
2

Door Latch/Striker Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on similar applications. Ensure the door latches securely and releases properly after tightening. Check for proper alignment.
3

Door Handle Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar applications. Ensure smooth operation of the door handle after tightening. Do not overtighten as damage to the handle is possible.

Lighting System

1

Tail Light Assembly Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar applications. Ensure the light assembly is flush and aligned properly before tightening. Do not overtighten and risk damaging the assembly.
2

Headlight Assembly Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar applications. Ensure the headlight assembly is flush and aligned properly before tightening. Do not overtighten and risk damaging the assembly.

Grille System

1

Grille Mounting Bolts/Screws

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar applications. Ensure the grille is flush and aligned properly before tightening. Do not overtighten and risk damaging the assembly.

Interior Components

1

Interior Trim Panel Screws/Fasteners

M4 x 0.7
Torque Specification
4.4 ft-lbs (6 N·m)
Important Notes
Estimated value; torque varies greatly depending on specific panel and fastener type. Always refer to the service manual for exact values. Use caution when installing interior trim pieces.
2

Seat Mounting Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Estimated value based on similar applications. Proper torque is vital for safety. Check the bolts after some use to confirm they remain torqued.

Roof System

1

Roof Rack Mounting Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on similar applications. Ensure roof rack is evenly secured and aligned before tightening. Do not overtighten and risk damaging the roof panel.
2

Sunroof Frame Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on similar applications. Ensure the sunroof frame is evenly secured and aligned before tightening. Do not overtighten and risk damaging the roof or frame.

Mirror System

1

Side Mirror Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar applications. Ensure the side mirror is securely mounted to prevent any loosening. Be careful when installing and don't over tighten to risk damage.

Brakes

Torque specifications for Brakes

Caliper Assembly

1

Caliper Mounting Bolts

M12 x 1.75
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure caliper is properly aligned on the rotor before tightening. Apply even pressure while tightening.
2

Brake Hose Banjo Bolt at Caliper

M10 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Use new crush washers. Do not over tighten. Estimated value based on common banjo bolt sizes.
3

Brake Bleeder Screw

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Do not over tighten. Use a low-range torque wrench if available. Estimated value based on common bleeder screw sizes.

Caliper Bracket

1

Caliper Mounting Bracket Bolts

M16 x 2.0
Torque Specification
130 ft-lbs (176 N·m)
Important Notes
Use a torque wrench for accurate measurement. Ensure threads are clean and in good condition.

Rotor And Drum

1

Brake Disc/Drum Retaining Bolts

M14 x 1.5
Torque Specification
100 ft-lbs (136 N·m)
Important Notes
Tighten bolts evenly to prevent rotor warping. May vary based on rotor design. Estimated based on common rotor retention bolts

Hydraulic System

1

Brake Hose Banjo Bolt at Master Cylinder/ABS Module

M10 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Use new crush washers. Do not over tighten. Estimated value based on common banjo bolt sizes.
2

Master Cylinder Mounting Nuts/Bolts

M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Tighten evenly to avoid stressing the master cylinder. Estimated value based on typical master cylinder mounting hardware.
3

ABS Module Mounting Bolts

M8 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Do not over tighten as it may damage ABS module. Estimated value based on typical ABS module mounting hardware.

Booster And Parking Brake

1

Brake Booster Mounting Nuts/Bolts

M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Tighten evenly to avoid stressing the booster housing. Estimated value based on typical brake booster mounting hardware.
2

Parking Brake Cable Bracket Bolts/Nuts

M8 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Ensure brackets are properly aligned before tightening. Estimated based on typical parking brake bracket hardware.

Drivetrain

Torque specifications for Drivetrain

Engine Flywheel

1

Flywheel Bolts

M12 x 1.25
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Ensure threads are clean and lightly lubricated with engine oil. Tighten in a star pattern.
2

Torque Converter Bolts to Flexplate

M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure flexplate and torque converter mating surfaces are clean. Tighten evenly in a circular pattern.

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure transmission is properly aligned with the engine before final tightening. Use new bolts if specified.
2

Transmission Output Shaft Flange Bolt

M10 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Ensure the flange is properly seated on the output shaft splines.

Transmission Service

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
8.83 ft-lbs (12 N·m)
Important Notes
Tighten in a criss-cross pattern to evenly compress the gasket. Do not over-tighten.
2

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new crush washer if applicable. Do not overtighten.

Driveshaft And Axles

1

Drive Axle/Half Shaft Bolts

M10 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Ensure proper alignment before tightening. These bolts often secure the axle to a flange.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Specification
177 ft-lbs (240 N·m)
Important Notes
Use a new nut if specified. May require staking after tightening. Ensure vehicle is on the ground with the wheels when tightening.
3

Propeller/Drive Shaft Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure proper alignment of the driveshaft flanges. Tighten evenly and in a circular pattern.
4

Driveshaft Center Support Bearing Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure the bearing is correctly positioned before final tightening. Check for proper alignment of the driveshaft.

Differential

1

Differential Drain/Fill Plug

M18 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Use a new crush washer if applicable. Do not overtighten.
2

Differential Ring Gear Bolts

M12 x 1.25
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Tighten in a star pattern to properly seat the ring gear. Use new bolts if specified.
3

Differential Carrier Bearing Cap Bolts

M12 x 1.75
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Tighten evenly in a cross pattern. Ensure bearing caps are properly aligned.

Transfer Case

1

Transfer Case Drain/Fill Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Use a new crush washer if applicable. Do not overtighten.
2

Transfer Case Mounting Bolts

M12 x 1.75
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure transfer case is properly aligned with the transmission before final tightening. Use new bolts if specified.

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 coil is properly seated before tightening bolts. Over-tightening may damage the coil housing. Do not use thread locker.

Starting System

1

Starter Motor Mounting Bolt

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the starter is properly aligned before tightening the bolts. Over-tightening may damage the starter housing or threads. Apply anti-seize to the bolt threads.

Charging System

1

Alternator Mounting Bolt

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the alternator is properly aligned and the belt tension is correct before final tightening. Over-tightening may damage the alternator housing or threads. Apply anti-seize to the bolt threads.

Battery System

1

Battery Terminal Nut

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure terminals are clean and free of corrosion before tightening. Over-tightening can damage the terminals and cause premature corrosion. Do not use grease.

Engine Control System

1

Engine Control Module (ECM/PCM) Mounting Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the module is properly seated before tightening. Over-tightening can damage the module housing. This torque value is an estimate, always refer to the manufacturer's specifications.

Grounding System

1

Ground Strap/Cable Mounting Bolt

M8 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Ensure the ground surfaces are clean and free of paint or corrosion. Over-tightening can damage the grounding surface or threads. This torque value is an estimate, always refer to the manufacturer's specifications.

Power Distribution

1

Fuse Box/Power Distribution Block Mounting Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the mounting surface is clean and flat before tightening. Over-tightening can damage the fuse box or block housing. This torque value is an estimate, always refer to the manufacturer's specifications.

Sensor System

1

Sensor Mounting Bolt (Crankshaft, Camshaft, MAP, etc.)

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the sensor is correctly positioned before tightening the bolt. Over-tightening may damage the sensor housing. This torque value is an estimate, always refer to the manufacturer's specifications for your sensor and model.

Emissions Sensors

Torque specifications for Emissions_sensors

Egr System

1

EGR Valve Mounting Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure mating surfaces are clean before installation. Tighten bolts evenly to prevent leaks.

Exhaust System

1

Exhaust Manifold to Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 18 ft-lbs (25 N·m)
Important Notes
Tighten bolts in a criss-cross pattern in two stages to ensure even clamping pressure and avoid leaks.
2

Exhaust Manifold Flange Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure proper alignment of the manifold and pipe before tightening the bolts.
3

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure proper alignment of the catalytic converter and pipe before tightening the bolts. Use new gaskets when installing.

Oxygen Sensors

1

Upstream Oxygen Sensor (Pre-Catalytic Converter)

M18 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Use anti-seize compound on the sensor threads. Do not over-tighten as the sensor threads can be damaged.
2

Downstream Oxygen Sensor (Post-Catalytic Converter)

M18 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Use anti-seize compound on the sensor threads. Do not over-tighten as the sensor threads can be damaged.

Intake System Sensors

1

Manifold Absolute Pressure (MAP) Sensor Mounting Screw

M5 x 0.8
Torque Specification
6 in-lbs (8 N·m)
Important Notes
Do not over-tighten the screw, as the sensor housing can be damaged. Convert in-lbs to ft-lbs for accuracy
2

Mass Airflow (MAF) Sensor Mounting Screws

M5 x 0.8
Torque Specification
6 in-lbs (8 N·m)
Important Notes
Do not over-tighten the screws, as the sensor housing is plastic. Convert in-lbs to ft-lbs for accuracy

Evaporative Emissions System

1

EVAP Purge Solenoid Valve Mounting Screws

M6 x 1
Torque Specification
7.4 in-lbs (10 N·m)
Important Notes
Do not over-tighten the screws, as the solenoid housing can be damaged. Convert in-lbs to ft-lbs for accuracy.
2

EVAP Canister Mounting Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the canister is properly aligned before tightening the bolts. Tighten to the specified torque to prevent rattles.

Exhaust

Torque specifications for Exhaust

Exhaust Manifolds

1

Exhaust Manifold/Header to Cylinder Head Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten in a circular pattern starting from the center and working outwards. Ensure even clamping force on the gasket.

Exhaust Piping

1

Exhaust Pipe to Exhaust Manifold/Header Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure proper alignment of flanges and use new gaskets. May be studs and nuts.
2

Exhaust Flange Bolts (between pipe sections)

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure proper alignment of flanges and use new gaskets. Estimated torque based on similar connections.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Use new gaskets and ensure proper alignment. May be studs and nuts.

Muffler

1

Muffler to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Use new gaskets and ensure proper alignment. May be studs and nuts.

Exhaust Hangers

1

Exhaust Hanger/Bracket Bolts

M10 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure proper alignment of the bracket, and bolt, check for proper placement of the hanger. Estimated torque based on similar bracket bolts.
2

Exhaust Hanger/Bracket Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure proper alignment of the bracket, and bolt, check for proper placement of the hanger. Estimated torque based on similar bracket bolts.

Oxygen Sensors

1

Oxygen Sensor (O2) Torque

M18 x 1.5
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Ensure the threads of the oxygen sensor are clean, and use an anti-seize compound when installing. Do not over-tighten; sensor damage can occur. Estimated value based on similar sensor installation.

Fuel

Torque specifications for Fuel

Fuel Rail And Injectors

1

Fuel Rail Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure bolts are tightened evenly to avoid warping the fuel rail. It is critical for leak-free seal
2

Fuel Injector Retaining Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
These bolts secure the injectors to the fuel rail or intake manifold. Critical to ensure proper injector sealing and fuel delivery.

Fuel Pump And Tank

1

Fuel Pump Mounting Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
These bolts secure the fuel pump assembly inside the tank or to the chassis. Be sure not to over-torque and cause damage to the pump flange.
2

Fuel Filler Neck Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures filler neck to vehicle body, important for proper seal and preventing leaks. Ensure the mounting surface is clean.
3

Fuel Tank Sending Unit/Module Retaining Ring

N/A
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
This is an estimated value. Tighten the retaining ring carefully to not damage the tank or ring. Refer to the manufacturer's spec if available. Specific tightening torque may vary based on the fuel pump model.

Fuel Filter

1

Fuel Filter Bracket Mounting Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures filter housing to the vehicle. Be sure to align the bracket correctly prior to tightening.

Fuel Line Fittings

1

Typical 3/8" Fuel Line Fitting

N/A
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value. Use backup wrenches when tightening. This value should be verified with the fittings manufacturer, typically a 10mm or 3/8 inch fitting, commonly used for line connections.

Evap System

1

EVAP System Component Fittings

N/A
Torque Specification
10 ft-lbs (13.5 N·m)
Important Notes
Estimated value. Torque values can vary significantly depending on the specific component, type, and material. Always confirm using a service manual for your vehicle model and the component you are working with before tightening.

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 all bolts are tightened evenly to prevent misalignment. Always use a calibrated torque wrench.

Ac Lines

1

A/C Line Fittings

Varies - typically M8 x 1.25 or M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Overtightening can damage fittings and seals, causing leaks. Use a backup wrench when tightening flare fittings.

Ac Condenser

1

A/C Condenser Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten bolts evenly to prevent stress on the condenser and its brackets. Estimated value based on typical M6 bolt.

Ac Evaporator

1

A/C Evaporator Core Housing Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper sealing and avoid over-tightening to prevent damage. Estimated value based on typical M6 bolt.

Blower Motor

1

HVAC Blower Motor Mounting Bolts

M5 x 0.8
Torque Specification
5.1 ft-lbs (7 N·m)
Important Notes
Do not overtighten these small bolts to avoid damage. Estimated value based on typical M5 bolt.

Hvac Control Module

1

HVAC Control Module Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not overtighten; ensure no damage to module or mounting locations. Estimated value based on typical M6 bolt.

Expansion Valve

1

Expansion Valve Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not overtighten; ensure proper seal is maintained to prevent refrigerant leaks. Estimated value based on typical M6 bolt.

Blend Door Actuator

1

Blend Door Actuator Mounting Screws

M4 x 0.7
Torque Specification
3.3 ft-lbs (4.5 N·m)
Important Notes
Do not over-tighten to prevent damage to the plastic housing or actuator. Estimated value based on typical M4 bolt.

Suspension

Torque specifications for Suspension

Front Suspension

1

Upper Strut Mounting Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Torque bolts evenly, ensuring the strut is seated correctly in the strut tower.
2

Lower Strut to Knuckle Bolts

M14 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
These bolts are critical for suspension and steering integrity. Ensure proper alignment before tightening.
3

Control Arm to Frame/Subframe Bolts

M14 x 2.0
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Tighten these bolts with the vehicle at ride height to prevent binding of bushings.
4

Ball Joint Nut

M12 x 1.75
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure the ball joint stud is properly seated before tightening.
5

Tie Rod End Nut

M12 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Tighten to proper torque to secure the tie rod end to the steering knuckle.
6

Sway Bar Link Nut (to Sway Bar)

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Torque the nut to secure the sway bar link to the sway bar.
7

Stabilizer Bar Link to Strut/Control Arm Bolts

M12 x 1.75
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
These bolts connect the sway bar link to the strut or control arm. Ensure proper alignment before tightening.

Sway Bar

1

Sway Bar Bracket Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure the sway bar is centered and the bushings are seated properly before tightening.

Rear Suspension

1

Rear Axle Beam/Trailing Arm Mounting Bolts

M14 x 2.0
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Tighten with the vehicle at ride height. These bolts are critical for rear suspension integrity.

Steering Knuckle

1

Steering Knuckle/Spindle Mounting Bolts (estimated)

M14 x 2.0
Torque Specification
110 ft-lbs (150 N·m)
Important Notes
This is an estimated value based on the size and application of similar bolts. Always refer to the official service manual for the exact value. This is assuming that the knuckle bolts to a strut or other suspension part. If it bolts to a control arm, this torque may be lower.

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 specification for the lug nuts on a 2014 Buick Enclave?

According to Buick technical specifications, the lug nuts on a 2014 Buick Enclave should be tightened to 140 ft-lbs (190 Nm).

Q2

What IS the proper torque sequence for the cylinder head bolts on a 2010 Buick Enclave?

The cylinder head bolts on a 2010 Buick Enclave should be tightened in the following sequence: 1. 25 ft-lbs (34 Nm) 2. 65 ft-lbs (88 Nm) 3. 90 degrees 4. 90 degrees

Q3

What type of torque wrench should be used for critical torque applications on a 2017 Buick Enclave?

For critical torque applications on a 2017 Buick Enclave, a properly calibrated click-type torque wrench IS recommended. A beam-type torque wrench can also be used, but ensure it IS accurate and within calibration.

Q4

Can I use a torque multiplier for high-torque applications on my 2012 Buick Enclave?

Using a torque multiplier for high-torque applications on a 2012 Buick Enclave IS not recommended. Torque multipliers can increase the risk of over-tightening and damaging components. Refer to Buick service manuals for proper torque specifications and procedures.

Q5

What are the torque specifications for the brake caliper bolts on a 2008 Buick Enclave?

The front brake caliper bolts on a 2008 Buick Enclave should be tightened to 108 ft-lbs (146 Nm). The rear brake caliper bolts should be tightened to 89 ft-lbs (121 Nm).

Q6

How often should I check the torque on critical fasteners on my 2015 Buick Enclave?

Critical fasteners on a 2015 Buick Enclave should be checked periodically, especially after major repairs or maintenance. Refer to the Buick service schedule for specific intervals. Regular checks ensure proper torque retention and prevent potential issues.

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 Enclave.

  • 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
Technical Service Bulletins

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