Buick Vehicle Models LaCrosse 2017-2019
Buick Vehicle Models LaCrosse 2017-2019 Torque Specifications
Complete Buick Vehicle Models LaCrosse 2017-2019 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
Safety First
- Always verify torque specifications with your vehicle's factory service manual
- Use properly calibrated torque wrenches
- Replace all torque-to-yield (TTY) bolts - they are single-use only
- When in doubt, consult a professional mechanic
Quick Reference Guide
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
Cross Pattern
Used for gaskets and cover plates
Sequential Pattern
Used for head bolts and other critical components
Common Mistakes to Avoid
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
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
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2.5l Engine
Torque specifications for 2.5L Engine
2.5l Engine
Torque specifications for 2.5L Engine
Cylinder Head
1 Cylinder Head Bolts
M12 x 1.75
1
Cylinder Head Bolts
M12 x 1.75
Torque Specification
1. 18 ft-lbs (25 N·m)
2. 90°
Important Notes
Initial torque followed by an angle torque. Use a proper tightening sequence as specified in the service manual. Final angle torque value may vary; verify with the service manual for this specific engine.
Engine Block
1 Main Bearing Bolts
M10 x 1.5
1
Main Bearing Bolts
M10 x 1.5
Torque Specification
1. 37 ft-lbs (50 N·m)
2. 60°
Important Notes
Initial torque followed by an angle torque. Tighten using the correct sequence as specified in the service manual. Final angle torque value may vary; verify with the service manual for this specific engine. Bolt size estimated based on similar applications.
2 Oil Pan Bolts
M6 x 1.0
2
Oil Pan Bolts
M6 x 1.0
Torque Specification
8.8 ft-lbs (12 N·m)
Important Notes
Tighten in a crisscross pattern to ensure even pressure on the gasket. Bolt size estimated based on similar applications.
3 Timing Belt/Chain Tensioner Bolt
M8 x 1.25
3
Timing Belt/Chain Tensioner Bolt
M8 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Proper tension is important for timing system. Bolt size estimated based on similar applications.
4 Water Pump Bolts
M8 x 1.25
4
Water Pump Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten in a crisscross pattern to ensure even pressure on the gasket. Bolt size estimated based on similar applications.
5 Oil Filter Housing Bolt
M8 x 1.25
5
Oil Filter Housing Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper sealing to prevent oil leaks. Bolt size estimated based on similar applications.
6 Oil Drain Plug Bolt
M14 x 1.5
6
Oil Drain Plug Bolt
M14 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new crush washer for sealing. Bolt size estimated based on similar applications.
Crankshaft
1 Flywheel Bolts
M10 x 1.5
1
Flywheel Bolts
M10 x 1.5
Torque Specification
46 ft-lbs (62 N·m)
Important Notes
Use a proper tightening sequence as specified in the service manual. Bolt size estimated based on similar applications.
2 Crankshaft Pulley/Harmonic Balancer Bolt
M14 x 1.5
2
Crankshaft Pulley/Harmonic Balancer Bolt
M14 x 1.5
Torque Specification
1. 37 ft-lbs (50 N·m)
2. 90°
Important Notes
Initial torque followed by an angle torque. Final angle value may vary; verify with the service manual for this specific engine. Bolt size estimated based on similar applications.
Connecting Rods
1 Connecting Rod Nuts
M9 x 1.25
1
Connecting Rod Nuts
M9 x 1.25
Torque Specification
1. 15 ft-lbs (20 N·m)
2. 60°
Important Notes
Initial torque followed by an angle torque. Tighten using the correct sequence as specified in the service manual. Final angle value may vary; verify with the service manual for this specific engine. Bolt size estimated based on similar applications.
Valve Train
1 Camshaft Sprocket Bolt
M10 x 1.25
1
Camshaft Sprocket Bolt
M10 x 1.25
Torque Specification
63 ft-lbs (85 N·m)
Important Notes
Bolt size estimated based on similar applications.
2 Rocker Arms/Shafts Bolts
M8 x 1.25
2
Rocker Arms/Shafts Bolts
M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Bolt size estimated based on similar applications.
3 Valve Cover Bolts
M6 x 1.0
3
Valve Cover Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a crisscross pattern to ensure even pressure on the gasket. Bolt size estimated based on similar applications.
Intake System
1 Throttle Body Bolts
M6 x 1.0
1
Throttle Body Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Bolt size estimated based on similar applications.
2 Intake Manifold Bolts
M8 x 1.25
2
Intake Manifold Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten in a crisscross pattern to ensure even pressure on the gasket. Bolt size estimated based on similar applications.
3 EGR Valve Bolts
M6 x 1.0
3
EGR Valve Bolts
M6 x 1.0
Torque Specification
8.8 ft-lbs (12 N·m)
Important Notes
Bolt size estimated based on similar applications.
Exhaust System
1 Exhaust Manifold/Headers Bolts
M8 x 1.25
1
Exhaust Manifold/Headers Bolts
M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten in a crisscross pattern to ensure even pressure on the gasket. Bolt size estimated based on similar applications.
2 Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
2
Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten in a crisscross pattern to ensure even pressure on the gasket. Bolt size estimated based on similar applications.
Fuel System
1 Fuel Rail Bolts
M6 x 1.0
1
Fuel Rail Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Bolt size estimated based on similar applications.
2 Fuel Injector Bolts
M6 x 1.0
2
Fuel Injector Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Bolt size estimated based on similar applications.
3 Fuel Injector Rail Bolts
M6 x 1.0
3
Fuel Injector Rail Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Bolt size estimated based on similar applications.
4 Fuel Filter Bolt/Nut
M8 x 1.25
4
Fuel Filter Bolt/Nut
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Bolt size estimated based on similar applications.
Ignition System
1 Ignition Coil Bolt
M6 x 1.0
1
Ignition Coil Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Bolt size estimated based on similar applications.
Cooling System
1 Water Pump Pulley Bolts
M8 x 1.25
1
Water Pump Pulley Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Bolt size estimated based on similar applications.
2 Thermostat Housing Bolts
M6 x 1.0
2
Thermostat Housing Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Bolt size estimated based on similar applications.
Sensors
1 Camshaft Position Sensor Bolt
M6 x 1.0
1
Camshaft Position Sensor Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Bolt size estimated based on similar applications.
2 Crankshaft Position Sensor Bolt
M6 x 1.0
2
Crankshaft Position Sensor Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Bolt size estimated based on similar applications.
3 Knock Sensor Bolt
M8 x 1.25
3
Knock Sensor Bolt
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Bolt size estimated based on similar applications.
4 Coolant Temperature Sensor Bolt/Nut
M6 x 1.0
4
Coolant Temperature Sensor Bolt/Nut
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Bolt size estimated based on similar applications.
Accessories And Mounts
1 Serpentine/Accessory Drive Belt Tensioner Bolt
M8 x 1.25
1
Serpentine/Accessory Drive Belt Tensioner Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Bolt size estimated based on similar applications.
2 Drive Belt Idler Pulley Bolt
M8 x 1.25
2
Drive Belt Idler Pulley Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Bolt size estimated based on similar applications.
3 Engine Mount Bolts
M10 x 1.5
3
Engine Mount Bolts
M10 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Torque value is an estimate and can vary widely based on location and type of engine mount. Consult service manual for specific locations. Bolt size estimated based on similar applications.
Spark Plugs
1 Spark Plugs
M14 x 1.25
1
Spark Plugs
M14 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Torque value is an estimate, Verify proper spark plug reach and torque requirements for specific application.
3.6l Engine
Torque specifications for 3.6L Engine
3.6l Engine
Torque specifications for 3.6L Engine
Cylinder Head
1 Cylinder Head Bolts
M12 x 1.75
1
Cylinder Head Bolts
M12 x 1.75
Torque Specification
1. 18 ft-lbs (25 N·m)
2. 90°
Important Notes
Cylinder head bolts are torque-to-yield (TTY) and require an additional 90° angle turn after the initial torque. Always use new bolts. Follow a proper tightening sequence from the center outwards, refer to the service manual.
2 Valve Cover Bolts
M6 x 1.0
2
Valve Cover Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use care, as these bolts are low torque and prone to stripping. Tighten in a crisscross pattern.
3 Rocker Arms/Shafts Bolts
M8 x 1.25
3
Rocker Arms/Shafts Bolts
M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Torque these bolts evenly, using a sequence, typically from the center outwards.
4 Camshaft Bearing Cap Bolts
M8 x 1.25
4
Camshaft Bearing Cap Bolts
M8 x 1.25
Torque Specification
1. 12 ft-lbs (16 N·m)
2. 45°
Important Notes
Camshaft bearing cap bolts have an initial torque and an angle torque, refer to the service manual. Always follow proper torque sequence and double check angle and torque values.
5 Exhaust Manifold/Headers Bolts
M8 x 1.25
5
Exhaust Manifold/Headers Bolts
M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten in a crisscross pattern from the center outwards. Check for exhaust leaks after installation.
6 Exhaust Manifold Studs
M8 x 1.25
6
Exhaust Manifold Studs
M8 x 1.25
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a crisscross pattern, as above for the exhaust manifold bolts
Engine Block
1 Main Bearing Bolts
M12 x 1.5
1
Main Bearing Bolts
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Tighten in a proper sequence, from the center outwards. Check for proper torque value before engine operation
2 Connecting Rod Nuts
M9 x 1.0
2
Connecting Rod Nuts
M9 x 1.0
Torque Specification
1. 15 ft-lbs (20 N·m)
2. 60°
Important Notes
Connecting rod nuts require an additional 60° angle turn after the initial torque. Always use new nuts and check torque values before operation.
3 Oil Pan Bolts
M6 x 1.0
3
Oil Pan Bolts
M6 x 1.0
Torque Specification
8.8 ft-lbs (12 N·m)
Important Notes
Use care, as these bolts are low torque and prone to stripping. Use a crisscross pattern.
4 Timing Belt/Chain Tensioner Bolt
M10 x 1.5
4
Timing Belt/Chain Tensioner Bolt
M10 x 1.5
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
This is critical for proper timing belt or chain tension.
5 Oil Filter Housing Bolt
M8 x 1.25
5
Oil Filter Housing Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper sealing of the oil filter housing to prevent oil leaks.
6 Oil Drain Plug Bolt
M14 x 1.5
6
Oil Drain Plug Bolt
M14 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new crush washer or sealing washer to prevent oil leaks.
7 Knock Sensor Bolt
M8 x 1.25
7
Knock Sensor Bolt
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
This is critical for accurate knock sensor readings. Torque value is estimated, refer to service manual
8 Water Pump Bolts
M8 x 1.25
8
Water Pump Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper sealing of the water pump to prevent coolant leaks
Intake System
1 Throttle Body Bolts
M6 x 1.0
1
Throttle Body Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use care, as these bolts are low torque and prone to stripping. Ensure no vacuum leaks.
2 Intake Manifold Bolts
M8 x 1.25
2
Intake Manifold Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten in a crisscross pattern from the center outwards. Ensure no vacuum leaks.
3 Intake Manifold Plenum Bolts
M6 x 1.0
3
Intake Manifold Plenum Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
These bolts are low torque, use care. Ensure proper sealing to prevent vacuum leaks. Torque value is estimated, refer to service manual
4 EGR Valve Bolts
M6 x 1.0
4
EGR Valve Bolts
M6 x 1.0
Torque Specification
8.8 ft-lbs (12 N·m)
Important Notes
Use care, as these bolts are low torque. Ensure proper sealing.
Fuel System
1 Fuel Rail Bolts
M6 x 1.0
1
Fuel Rail Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use care, as these bolts are low torque and prone to stripping. Ensure no fuel leaks.
2 Fuel Injector Bolts
M6 x 1.0
2
Fuel Injector Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use care, as these bolts are low torque. Some models may use clips rather than bolts.
3 Fuel Filter Bolt/Nut
M8 x 1.25
3
Fuel Filter Bolt/Nut
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper sealing and prevent fuel leaks
Ignition System
1 Spark Plugs
M14 x 1.25
1
Spark Plugs
M14 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Proper torque ensures a good seal for combustion and electrical conductivity. Over or under torquing can cause damage to the plug or cylinder head.
2 Ignition Coil Bolt
M6 x 1.0
2
Ignition Coil Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use care, as these bolts are low torque and prone to stripping.
Cooling System
1 Water Pump Pulley Bolts
M8 x 1.25
1
Water Pump Pulley Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper power transfer to the water pump and prevent pulley from coming loose.
2 Thermostat Housing Bolts
M6 x 1.0
2
Thermostat Housing Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use care, as these bolts are low torque and prone to stripping. Proper torque is critical to prevent coolant leaks.
3 Engine Coolant Temperature Sensor Bolt
M6 x 1.0
3
Engine Coolant Temperature Sensor Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use care, as these bolts are low torque. Ensure proper sealing.
Accessories
1 Crankshaft Pulley/Harmonic Balancer Bolt
M14 x 1.5
1
Crankshaft Pulley/Harmonic Balancer Bolt
M14 x 1.5
Torque Specification
1. 37 ft-lbs (50 N·m)
2. 90°
Important Notes
Some models may use an angle torque. Refer to the service manual.
2 Serpentine/Accessory Drive Belt Tensioner Bolt
M10 x 1.5
2
Serpentine/Accessory Drive Belt Tensioner Bolt
M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper belt tension, as this is critical to prevent belt slippage.
3 Drive Belt Idler Pulley Bolt
M10 x 1.5
3
Drive Belt Idler Pulley Bolt
M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper belt alignment
Sensors
1 Camshaft Position Sensor Bolt
M6 x 1.0
1
Camshaft Position Sensor Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use care, as these bolts are low torque and prone to stripping.
2 Crankshaft Position Sensor Bolt
M6 x 1.0
2
Crankshaft Position Sensor Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Use care, as these bolts are low torque and prone to stripping.
3 Oil Pressure Sensor Bolt
M6 x 1.0
3
Oil Pressure Sensor Bolt
M6 x 1.0
Torque Specification
8.8 ft-lbs (12 N·m)
Important Notes
Use care, as these bolts are low torque and prone to stripping. Ensure no oil leaks.
Other
1 Flywheel Bolts
M10 x 1.5
1
Flywheel Bolts
M10 x 1.5
Torque Specification
46 ft-lbs (62 N·m)
Important Notes
Proper torque is essential to prevent the flywheel from coming loose.
6t40 Transmission
Torque specifications for 6t40 Transmission
6t40 Transmission
Torque specifications for 6t40 Transmission
Transmission Mounting
1 Transmission Mounting Bolts
M12 x 1.75
1
Transmission Mounting Bolts
M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure threads are clean and lubricated. Use a calibrated torque wrench. Tighten in a cross pattern.
Transmission Case
1 Transmission Oil Pan Bolts
M6 x 1.0
1
Transmission Oil Pan Bolts
M6 x 1.0
Torque Specification
8.8 ft-lbs (12 N·m)
Important Notes
Tighten in a cross pattern. Overtightening can damage the pan or gasket leading to leaks.
2 Side Cover Bolts
M6 x 1.0
2
Side Cover Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper sealing surface. Tighten evenly to avoid leaks.
Fluid Plugs
1 Transmission Drain and Fill Plugs
M18 x 1.5
1
Transmission Drain and Fill Plugs
M18 x 1.5
Torque Specification
27 ft-lbs (37 N·m)
Important Notes
Ensure the sealing surface is clean and lubricated. Do not overtighten, which could damage the plug or threads.
Drivetrain
1 Drive Axle/Half Shaft Bolts
M10 x 1.5
1
Drive Axle/Half Shaft Bolts
M10 x 1.5
Torque Specification
118 ft-lbs (160 N·m)
Important Notes
These bolts connect the axle flange to the transmission output shaft. Ensure proper alignment during install. Apply Loctite if specified by vehicle manufacturer.
Tcm
1 Transmission Control Module (TCM) Mounting Bolts
M5 x 0.8
1
Transmission Control Module (TCM) Mounting Bolts
M5 x 0.8
Torque Specification
7.4 in-lbs (10 N·m)
Important Notes
Handle the TCM with care. Overtightening can damage the module or its mounting points.
Bellhousing
1 Transmission Bellhousing Bolts
M12 x 1.75
1
Transmission Bellhousing Bolts
M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the mating surfaces are clean before installation. Tighten in a cross pattern to ensure even pressure.
Valve Body
1 Valve Body Mounting Bolts
M6 x 1.0
1
Valve Body Mounting Bolts
M6 x 1.0
Torque Specification
7 in-lbs (9 N·m)
Important Notes
Tighten bolts evenly in a cross pattern. Overtightening can damage the valve body or affect its function. It is recommended to check the specific service manual for your vehicle, as torque values can vary slightly between 6T40 transmissions.
9t60 Transmission
Torque specifications for 9t60 Transmission
9t60 Transmission
Torque specifications for 9t60 Transmission
Transmission Mounting
1 Transmission Mounting Bolts
M12 x 1.75
1
Transmission Mounting Bolts
M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Tighten bolts in a cross pattern to ensure even pressure.
Transmission Case
1 Transmission Case Bolts
M8 x 1.25
1
Transmission Case Bolts
M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Estimated value based on typical M8 case bolts. Consult manual for specific pattern. Torque bolts in a criss-cross pattern
2 Transmission Case Bolts (Larger)
M10 x 1.5
2
Transmission Case Bolts (Larger)
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated value for larger case bolts. Consult manual for specific locations and pattern. Torque bolts in a criss-cross pattern
Oil Pan
1 Transmission Oil Pan Bolts
M6 x 1.0
1
Transmission Oil Pan Bolts
M6 x 1.0
Torque Specification
8.83 ft-lbs (12 N·m)
Important Notes
Torque bolts in a cross pattern to prevent leaks. Do not over-tighten.
Fluid Plugs
1 Transmission Drain and Fill Plugs
M18 x 1.5
1
Transmission Drain and Fill Plugs
M18 x 1.5
Torque Specification
27 ft-lbs (37 N·m)
Important Notes
Use new crush washers if required. Do not over-tighten.
Drive Axle
1 Drive Axle/Half Shaft Bolts
M10 x 1.5
1
Drive Axle/Half Shaft Bolts
M10 x 1.5
Torque Specification
118 ft-lbs (160 N·m)
Important Notes
Tighten securely to prevent driveline vibrations.
Tcm
1 Transmission Control Module (TCM) Mounting Bolts
M6 x 1.0
1
Transmission Control Module (TCM) Mounting Bolts
M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Do not over-tighten to avoid damaging the TCM.
Cooler Lines
1 Transmission Cooler Line Fittings (Threaded Type)
M16 x 1.5
1
Transmission Cooler Line Fittings (Threaded Type)
M16 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use new seals if required to prevent leaks. Do not over-tighten.
Torque Converter
1 Torque Converter Bolts
M10 x 1.5
1
Torque Converter Bolts
M10 x 1.5
Torque Specification
48 ft-lbs (65 N·m)
Important Notes
Torque converter bolts are critical, should be tightened in a cross pattern and in sequence to spec.
Valve Body
1 Valve Body Bolts
M6 x 1.0
1
Valve Body Bolts
M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Estimated value based on typical M6 bolts. Consult manual for specific pattern. Torque bolts in a criss-cross pattern.
2 Valve Body Bolts (Larger)
M6 x 1.0
2
Valve Body Bolts (Larger)
M6 x 1.0
Torque Specification
8.83 ft-lbs (12 N·m)
Important Notes
Estimated value for larger valve body bolts. Consult manual for specific locations. Torque bolts in a criss-cross pattern.
Body
Torque specifications for Body
Body
Torque specifications for Body
Wheels
1 Wheel Lug Nuts
M14 x 1.5
1
Wheel Lug Nuts
M14 x 1.5
Torque Specification
100 ft-lbs (136 N·m)
Important Notes
Tighten lug nuts in a star pattern. Ensure lug nuts are properly seated before applying final torque.
Fuel System
1 Fuel Tank Strap Bolts
M10 x 1.5
1
Fuel Tank Strap Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure proper alignment of the fuel tank straps before tightening the bolts. Do not overtighten.
2 Fuel Filler Neck Bolts
M6 x 1.0
2
Fuel Filler Neck Bolts
M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the filler neck is properly seated against the body panel before tightening. Do not overtighten.
Body Panels
1 Fender Bolts (Larger)
M8 x 1.25
1
Fender Bolts (Larger)
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten in a crisscross pattern to ensure even pressure and alignment. Estimated value.
2 Fender Bolts (Smaller)
M6 x 1.0
2
Fender Bolts (Smaller)
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten in a crisscross pattern to ensure even pressure and alignment. Estimated value.
3 Bumper Cover Mounting Bolts/Fasteners
M6 x 1.0
3
Bumper Cover Mounting Bolts/Fasteners
M6 x 1.0
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
Tighten bolts evenly, working from center outwards. Ensure clips are properly engaged. Estimated value.
4 Grille Mounting Bolts/Fasteners
M6 x 1.0
4
Grille Mounting Bolts/Fasteners
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten bolts evenly to secure grille properly. Estimated value.
5 Tail Light Assembly Bolts/Fasteners
M6 x 1.0
5
Tail Light Assembly Bolts/Fasteners
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten bolts evenly to secure the tail light assembly without over-tightening. Estimated Value.
6 Headlight Assembly Bolts/Fasteners
M6 x 1.0
6
Headlight Assembly Bolts/Fasteners
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten bolts evenly to secure the headlight assembly without over-tightening. Estimated Value.
7 Body Side Molding Bolts/Clips
M6 x 1.0
7
Body Side Molding Bolts/Clips
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure clips are properly engaged. Tighten bolts evenly. Estimated value.
Doors
1 Door Hinge Bolts
M8 x 1.25
1
Door Hinge Bolts
M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Tighten bolts evenly, ensuring proper door alignment. Check for proper door operation after tightening. Estimated value.
2 Door Latch/Striker Bolts
M6 x 1.0
2
Door Latch/Striker Bolts
M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the latch and striker are aligned properly. Check for smooth latching operation after tightening. Estimated value.
Hood
1 Hood Hinge Bolts
M8 x 1.25
1
Hood Hinge Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten bolts evenly, ensuring proper hood alignment and operation. Estimated Value.
2 Hood Latch/Striker Bolts
M6 x 1.0
2
Hood Latch/Striker Bolts
M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper latch alignment and smooth operation. Check for secure latching. Estimated value.
Trunk
1 Trunk Lid Hinge Bolts
M8 x 1.25
1
Trunk Lid Hinge Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten evenly to ensure proper trunk lid alignment. Check for smooth opening/closing. Estimated value.
Interior
1 Seat Mounting Bolts
M10 x 1.5
1
Seat Mounting Bolts
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Tighten all bolts evenly to ensure the seat is securely mounted. This is a critical safety component, so ensure proper torque. Confirm with a specific service manual to confirm correct spec. Estimated Value.
Brakes
Torque specifications for Brakes
Brakes
Torque specifications for Brakes
Front Brake Calipers
1 Brake Caliper Guide Bolts
M10 x 1.5
1
Brake Caliper Guide Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Lubricate guide bolts with brake caliper grease before installation. Ensure the caliper slides freely on the guide pins.
2 Brake Caliper Mounting Bracket Bolts
M12 x 1.75
2
Brake Caliper Mounting Bracket Bolts
M12 x 1.75
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure mounting surfaces are clean and free of debris. These bolts secure the bracket to the steering knuckle.
3 Brake Line Fitting to Caliper
M10 x 1.0 Banjo Bolt
3
Brake Line Fitting to Caliper
M10 x 1.0 Banjo Bolt
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Use new sealing washers for proper sealing. Over tightening may damage the fittings or lines. Torque is estimated, always refer to specific service documentation
Rear Brake Calipers
1 Brake Caliper Guide Bolts
M10 x 1.5
1
Brake Caliper Guide Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Lubricate guide bolts with brake caliper grease before installation. Ensure the caliper slides freely on the guide pins.
2 Brake Caliper Mounting Bracket Bolts
M12 x 1.75
2
Brake Caliper Mounting Bracket Bolts
M12 x 1.75
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure mounting surfaces are clean and free of debris. These bolts secure the bracket to the steering knuckle or axle carrier.
3 Brake Line Fitting to Caliper
M10 x 1.0 Banjo Bolt
3
Brake Line Fitting to Caliper
M10 x 1.0 Banjo Bolt
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Use new sealing washers for proper sealing. Over tightening may damage the fittings or lines. Torque is estimated, always refer to specific service documentation
Brake Discs
1 Brake Disc/Rotor Retaining Bolts/Screws
M6 x 1.0
1
Brake Disc/Rotor Retaining Bolts/Screws
M6 x 1.0
Torque Specification
0.74 ft-lbs (10 N·m)
Important Notes
These bolts secure the rotor to the hub for assembly purposes only. These bolts are not load bearing. Torque is estimated, always refer to specific service documentation
Wheel Nuts
1 Wheel Lug Nuts
M14 x 1.5
1
Wheel Lug Nuts
M14 x 1.5
Torque Specification
100 ft-lbs (136 N·m)
Important Notes
Tighten lug nuts in a star pattern for even clamping. Re-torque after the first 50-100 miles of driving.
Brake Hydraulics
1 Brake Line Fittings to Brake Hoses or Hardlines
Various Flare Nut Sizes (Estimate: M10 x 1.0)
1
Brake Line Fittings to Brake Hoses or Hardlines
Various Flare Nut Sizes (Estimate: M10 x 1.0)
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Ensure fittings are properly aligned and clean to avoid cross threading. Use a flare nut wrench to avoid damaging the fittings. Torque is estimated, always refer to specific service documentation
2 Brake Master Cylinder Mounting Nuts
M8 x 1.25
2
Brake Master Cylinder Mounting Nuts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the master cylinder is properly seated against the firewall. Torque is estimated, always refer to specific service documentation.
3 Brake Booster Mounting Nuts
M8 x 1.25
3
Brake Booster Mounting Nuts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the brake booster is properly seated against the firewall. Torque is estimated, always refer to specific service documentation.
4 Bleeder Valve
M7 x 1.0
4
Bleeder Valve
M7 x 1.0
Torque Specification
0.74 ft-lbs (10 N·m)
Important Notes
Typically hand tightened but may need a slight torque to seal. Torque is estimated, always refer to specific service documentation
Parking Brake
1 Parking Brake Cable Mounting Bracket Bolts
M6 x 1.0
1
Parking Brake Cable Mounting Bracket Bolts
M6 x 1.0
Torque Specification
0.74 ft-lbs (10 N·m)
Important Notes
Ensure the bracket is properly aligned before tightening. Torque is estimated, always refer to specific service documentation.
Drivetrain
Torque specifications for Drivetrain
Drivetrain
Torque specifications for Drivetrain
Engine Flywheel
1 Flywheel Bolts
M10 x 1.5
1
Flywheel Bolts
M10 x 1.5
Torque Specification
46 ft-lbs (62 N·m)
Important Notes
Apply threadlocker to bolt threads. Torque in a star pattern.
2 Clutch Pressure Plate Bolts
M8 x 1.25
2
Clutch Pressure Plate Bolts
M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Torque in a star pattern to ensure even pressure distribution. This is an estimated value, verify with a service manual.
Transmission Mounting
1 Transmission Mounting Bolts
M12 x 1.75
1
Transmission Mounting Bolts
M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure proper alignment before tightening. May require multiple torque passes.
2 Transmission Case Bolts
M8 x 1.25
2
Transmission Case Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Torque in a cross pattern. This is an estimated value, verify with a service manual.
3 Transmission Oil Pan Bolts
M6 x 1.0
3
Transmission Oil Pan Bolts
M6 x 1.0
Torque Specification
8.8 ft-lbs (12 N·m)
Important Notes
Torque in a cross pattern to ensure even pressure distribution. Use a new gasket or sealant as needed.
4 Transmission Drain and Fill Plugs
M18 x 1.5
4
Transmission Drain and Fill Plugs
M18 x 1.5
Torque Specification
27 ft-lbs (37 N·m)
Important Notes
Use a new crush washer for proper sealing.
Driveshaft And Axles
1 Drive Axle/Half Shaft Bolts
M10 x 1.5
1
Drive Axle/Half Shaft Bolts
M10 x 1.5
Torque Specification
118 ft-lbs (160 N·m)
Important Notes
Tighten all bolts evenly, alternating between bolts.
2 CV Joint/Axle Nut
M24 x 1.5
2
CV Joint/Axle Nut
M24 x 1.5
Torque Specification
177 ft-lbs (240 N·m)
Important Notes
High torque is critical for proper wheel bearing preload. Use a new nut if specified.
3 Propeller/Drive Shaft Bolts
M10 x 1.5
3
Propeller/Drive Shaft Bolts
M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure proper alignment of the driveshaft before tightening. Torque in a cross pattern
4 Driveshaft Center Support Bearing Bolts
M10 x 1.5
4
Driveshaft Center Support Bearing Bolts
M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated torque value. Verify with a service manual. Tighten evenly.
5 Output Shaft Flange Bolts (Transmission & Differential)
M12 x 1.75
5
Output Shaft Flange Bolts (Transmission & Differential)
M12 x 1.75
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated value, verify with a service manual. Tighten evenly.
Differential And Transfer Case
1 Differential Ring Gear Bolts
M12 x 1.5
1
Differential Ring Gear Bolts
M12 x 1.5
Torque Specification
1. 40 ft-lbs (54 N·m)
2. 90°
Important Notes
Tighten to the specified torque then turn an additional 90 degrees. Estimated torque, verify with the service manual.
2 Differential Drain/Fill Plug
M18 x 1.5
2
Differential Drain/Fill Plug
M18 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new crush washer for proper sealing.
3 Transfer Case Drain/Fill Plug
M18 x 1.5
3
Transfer Case Drain/Fill Plug
M18 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new crush washer for proper sealing. Applies only to 4WD/AWD models.
Wheel Hub
1 Wheel Hub/Bearing Bolts
M12 x 1.75
1
Wheel Hub/Bearing Bolts
M12 x 1.75
Torque Specification
118 ft-lbs (160 N·m)
Important Notes
Tighten all bolts evenly. Check for proper seating before final torque.
Electrical
Torque specifications for Electrical
Electrical
Torque specifications for Electrical
Ignition System
1 Ignition Coil Mounting Bolt
M6 x 1.0
1
Ignition Coil Mounting Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensures proper electrical contact and secure coil mounting. Torque evenly to prevent damage. If bolts are corroded replace them.
Starting System
1 Starter Motor Mounting Bolts
M10 x 1.5
1
Starter Motor Mounting Bolts
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Critical for ensuring proper engagement with the flywheel and ground connection. Tighten evenly and gradually.
Charging System
1 Alternator Mounting Bolts
M10 x 1.5
1
Alternator Mounting Bolts
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Proper torque is vital for alternator grounding. Tighten evenly. If bolts are corroded or damaged replace them.
Battery System
1 Battery Terminal Nuts
M8 x 1.25
1
Battery Terminal Nuts
M8 x 1.25
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Proper torque ensures good electrical contact and minimizes resistance. Avoid over-tightening, which can damage terminals. Clean terminals before installation for optimal results.
Ecm Pcm
1 ECM/PCM Mounting Bolts
M6 x 1.0
1
ECM/PCM Mounting Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensures a secure and grounded connection for the ECM/PCM. Tighten evenly to prevent damage. Poor ground connections may lead to intermittent operation.
Ground Connections
1 Ground Strap/Wire Mounting Bolts
M6 x 1.0
1
Ground Strap/Wire Mounting Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensures proper grounding of the electrical system. A range of bolts may be used, ensure bolt is of proper size before torquing. Clean mating surfaces before installation. This is an estimated value. If using a M8 bolt, torque to 14 ft-lbs (19 N·m).
Sensor Mounts
1 Crankshaft Position Sensor Mounting Bolt
M6 x 1.0
1
Crankshaft Position Sensor Mounting Bolt
M6 x 1.0
Torque Specification
6.6 ft-lbs (9 N·m)
Important Notes
Proper torque is important for secure mounting and signal integrity. This is an estimated value.
2 Camshaft Position Sensor Mounting Bolt
M6 x 1.0
2
Camshaft Position Sensor Mounting Bolt
M6 x 1.0
Torque Specification
6.6 ft-lbs (9 N·m)
Important Notes
Proper torque ensures secure sensor mounting and signal integrity. This is an estimated value.
3 MAP Sensor Mounting Bolt
M5 x 0.8
3
MAP Sensor Mounting Bolt
M5 x 0.8
Torque Specification
6.2 ft-lbs (8.4 N·m)
Important Notes
Proper torque is important for secure mounting, signal integrity and prevent vacuum leaks. This is an estimated value.
Lighting System
1 Headlight Mounting Screws/Bolts
M5 x 0.8
1
Headlight Mounting Screws/Bolts
M5 x 0.8
Torque Specification
3.7 ft-lbs (5 N·m)
Important Notes
Prevents vibration and housing damage. Use caution when tightening to prevent over-tightening. This is an estimated value.
2 Taillight Mounting Screws/Bolts
M5 x 0.8
2
Taillight Mounting Screws/Bolts
M5 x 0.8
Torque Specification
3.7 ft-lbs (5 N·m)
Important Notes
Prevents vibration and housing damage. Use caution when tightening to prevent over-tightening. This is an estimated value.
Power Distribution
1 Fuse Box/Power Distribution Center Mounting Bolts
M6 x 1.0
1
Fuse Box/Power Distribution Center Mounting Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensures proper electrical distribution. Loose mounts could lead to intermittent connections. Torque evenly to prevent damage.
Emissions Sensors
Torque specifications for Emissions_sensors
Emissions Sensors
Torque specifications for Emissions_sensors
Exhaust System
1 Exhaust Manifold/Header to Cylinder Head Bolts
M10 x 1.5
1
Exhaust Manifold/Header to Cylinder Head Bolts
M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment of the manifold before tightening. Tighten in a star pattern.
2 Exhaust Manifold/Header Mounting Bolts
M8 x 1.25
2
Exhaust Manifold/Header Mounting Bolts
M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Inspect the gasket for damage, install a new gasket if needed. Tighten in a star pattern.
3 Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.5
3
Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Use new hardware when installing, ensure a proper seal.
4 Oxygen Sensor Mounting
M18 x 1.5
4
Oxygen Sensor Mounting
M18 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure sensor threads are clean, apply anti-seize compound, do not over-torque. Estimated value.
Intake System
1 Manifold Absolute Pressure (MAP) Sensor Mounting Bolt/Screw
M6 x 1.0
1
Manifold Absolute Pressure (MAP) Sensor Mounting Bolt/Screw
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not over-tighten, typically a small metric bolt. Estimated value.
2 Mass Air Flow (MAF) Sensor Mounting Bolt/Screw
M6 x 1.0
2
Mass Air Flow (MAF) Sensor Mounting Bolt/Screw
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not over-tighten, typically a small metric bolt. Ensure proper sealing. Estimated value.
Egr System
1 EGR Valve Mounting Bolts
M8 x 1.25
1
EGR Valve Mounting Bolts
M8 x 1.25
Torque Specification
8.8 ft-lbs (12 N·m)
Important Notes
Ensure a proper gasket is installed. Tighten bolts evenly.
Pcv Evap System
1 Crankcase Ventilation Valve (PCV) Mounting Bolt/Nut
M6 x 1.0
1
Crankcase Ventilation Valve (PCV) Mounting Bolt/Nut
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not over-tighten, typically a small metric bolt, use new hardware. Estimated Value.
2 Evaporative Emissions Canister Vent Valve Mounting Bolt/Screw
M5 x 0.8
2
Evaporative Emissions Canister Vent Valve Mounting Bolt/Screw
M5 x 0.8
Torque Specification
5.2 ft-lbs (7 N·m)
Important Notes
Do not over-tighten, typically a small metric bolt. Estimated value.
Exhaust
Torque specifications for Exhaust
Exhaust
Torque specifications for Exhaust
Exhaust Manifold
1 Exhaust Manifold/Headers to Cylinder Head Bolts
M10 x 1.5
1
Exhaust Manifold/Headers to Cylinder Head Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten bolts in a cross pattern to ensure even pressure and proper sealing. Use new gaskets. Apply anti-seize compound to threads before assembly.
Exhaust Piping
1 Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.5
1
Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Use new gaskets. Apply anti-seize compound to threads before assembly.
2 Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.5
2
Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Use new gaskets. Apply anti-seize compound to threads before assembly.
3 Muffler to Exhaust Pipe Bolts
M10 x 1.5
3
Muffler to Exhaust Pipe Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Use new gaskets. Apply anti-seize compound to threads before assembly.
4 Exhaust Flange Spring Bolts
M8 x 1.25
4
Exhaust Flange Spring Bolts
M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Tighten until a specified amount of thread is showing (if available). Use new spring bolts. Estimated value; confirm with the service manual.
Exhaust Hangers
1 Exhaust Hanger Bolts/Studs
M8 x 1.25
1
Exhaust Hanger Bolts/Studs
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Apply anti-seize compound to threads before assembly. Estimated value; confirm with the service manual.
Oxygen Sensors
1 Oxygen Sensor
M18 x 1.5
1
Oxygen Sensor
M18 x 1.5
Torque Specification
27 ft-lbs (37 N·m)
Important Notes
Do not overtighten; this can damage the sensor. Apply anti-seize to the sensor threads before installation. Estimated value; confirm with the service manual.
Fuel
Torque specifications for Fuel
Fuel
Torque specifications for Fuel
Fuel Rail
1 Fuel Rail Mounting Bolts
M6 x 1.0
1
Fuel Rail Mounting Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the fuel rail is properly seated before tightening. Tighten all bolts in a crisscross pattern to evenly distribute pressure.
2 Fuel Injector Mounting Bolts/Screws
M5 x 0.8
2
Fuel Injector Mounting Bolts/Screws
M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure injector seals are correctly installed. These fasteners are typically small and require delicate handling. Tighten gently.
3 Fuel Pressure Sensor Mounting Bolt/Nut
M6 x 1.0
3
Fuel Pressure Sensor Mounting Bolt/Nut
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten to specified torque to prevent leaks and maintain correct sensor readings. The sensor's o-ring or sealing washer must be properly seated.
Fuel Pump And Tank
1 Fuel Pump Module Mounting Bolts
M8 x 1.25
1
Fuel Pump Module Mounting Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the fuel pump module is correctly aligned in the fuel tank. Tighten all bolts evenly to maintain a proper seal.
2 Fuel Filler Neck Mounting Bolts
M8 x 1.25
2
Fuel Filler Neck Mounting Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the fuel filler neck seal is correctly positioned. Tighten evenly to prevent fuel leaks and fume release.
3 Fuel Tank Sending Unit Retaining Ring
N/A
3
Fuel Tank Sending Unit Retaining Ring
N/A
Torque Specification
44.5 ft-lbs (60 N·m)
Important Notes
This value is an average estimate, torque may vary based on design. Ensure the retaining ring is fully and correctly engaged, this often requires a specialized tool for installation.
Fuel Lines And Filter
1 Fuel Filter Mounting Bolt/Nut
M8 x 1.25
1
Fuel Filter Mounting Bolt/Nut
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper bracket alignment before tightening. Correct torque prevents movement of the fuel filter.
2 Fuel Line Fittings (Banjo Bolts/Compression Fittings)
Varies Based on Design, M12 x 1.5 estimated
2
Fuel Line Fittings (Banjo Bolts/Compression Fittings)
Varies Based on Design, M12 x 1.5 estimated
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Torque value is an estimate and varies by fitting type and size. Refer to specific instructions for your vehicle's fittings. Avoid over-tightening as this can damage the fitting or seal. May require turn of the nut after initial torque value. Often will use a 'backing' wrench to prevent twisting the line and fitting during installation.
Fuel Pump High Pressure
1 High Pressure Fuel Pump Mounting Bolts
M8 x 1.25
1
High Pressure Fuel Pump Mounting Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the pump is correctly positioned before tightening. Tighten evenly to maintain a proper seal.
Access Panel
1 Fuel Tank Access Panel Bolts/Screws
M5 x 0.8
1
Fuel Tank Access Panel Bolts/Screws
M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly, do not overtighten. Ensure the seal is correctly aligned. Under-tightening can also cause fumes to permeate the passenger compartment.
Hvac
Torque specifications for Hvac
Hvac
Torque specifications for Hvac
Ac Compressor
1 A/C Compressor Mounting Bolts
M10 x 1.5
1
A/C Compressor Mounting Bolts
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure bolts are clean and threads are in good condition before tightening. Use a calibrated torque wrench.
Ac Lines
1 A/C Line Fittings
M8 x 1.25
1
A/C Line Fittings
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a back-up wrench to hold the fitting while tightening the nut to prevent twisting or damage. Always use new O-rings or seals when connecting lines.
Serpentine Belt
1 Serpentine/Accessory Drive Belt Tensioner Bolt
M8 x 1.25
1
Serpentine/Accessory Drive Belt Tensioner Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening. Do not over-tighten to avoid damage to the tensioner or bracket.
Ac Condenser
1 A/C Condenser Mounting Bolts/Nuts
M6 x 1.0
1
A/C Condenser Mounting Bolts/Nuts
M6 x 1.0
Torque Specification
8.83 ft-lbs (12 N·m)
Important Notes
Ensure the condenser is properly aligned on the mounting points. Use a calibrated torque wrench. Value is converted from inch-lbs.
Ac Evaporator
1 A/C Evaporator Core Housing Bolts
M6 x 1.0
1
A/C Evaporator Core Housing Bolts
M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Tighten the bolts evenly to ensure proper sealing and avoid cracking the housing. Value is converted from inch-lbs
Hvac Airbox
1 HVAC Air Box Mounting Bolts/Screws
M6 x 1.0
1
HVAC Air Box Mounting Bolts/Screws
M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Tighten the bolts evenly and ensure a secure fit between the airbox and firewall. Value is converted from inch-lbs.
Blend Door Actuator
1 Blend Door Actuator Mounting Screws
M5 x 0.8
1
Blend Door Actuator Mounting Screws
M5 x 0.8
Torque Specification
3.75 ft-lbs (5 N·m)
Important Notes
Do not overtighten. Ensure proper alignment before tightening. Value is converted from inch-lbs.
Blower Motor
1 Blower Motor Mounting Screws
M5 x 0.8
1
Blower Motor Mounting Screws
M5 x 0.8
Torque Specification
3.75 ft-lbs (5 N·m)
Important Notes
Ensure the blower motor is correctly positioned and flush against the housing. Do not overtighten. Value is converted from inch-lbs.
Suspension
Torque specifications for Suspension
Suspension
Torque specifications for Suspension
Front Suspension
1 Strut/Shock Absorber Mounting Bolts
M14 x 1.5
1
Strut/Shock Absorber Mounting Bolts
M14 x 1.5
Torque Specification
122 ft-lbs (165 N·m)
Important Notes
Tighten the strut mounting bolts to the specified torque. Ensure the strut is properly seated before tightening. These bolts connect the strut assembly to the strut tower.
2 Control Arm Mounting Bolts
M14 x 2.0
2
Control Arm Mounting Bolts
M14 x 2.0
Torque Specification
89 ft-lbs (121 N·m)
Important Notes
Tighten the control arm bolts to the specified torque. Make sure the suspension is at ride height or supported before tightening to avoid binding. These bolts secure the control arm to the vehicle's frame or subframe.
3 Ball Joint Nut
M12 x 1.75
3
Ball Joint Nut
M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Tighten the ball joint nut to the specified torque. Do not overtighten, as this could damage the ball joint. This nut secures the ball joint to the steering knuckle or control arm.
4 Tie Rod End Nut
M12 x 1.5
4
Tie Rod End Nut
M12 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Tighten the tie rod end nut to the specified torque. Make sure the tie rod end is fully seated in the steering knuckle. This nut connects the tie rod end to the steering knuckle.
5 Sway Bar Link Nut
M10 x 1.5
5
Sway Bar Link Nut
M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Tighten the sway bar link nut to the specified torque. Make sure the links are aligned properly to the sway bar and strut or control arm. This nut secures the sway bar links to the sway bar and strut/shock or control arm.
6 Steering Knuckle to Strut Bolt/Nut
M12 x 1.75
6
Steering Knuckle to Strut Bolt/Nut
M12 x 1.75
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Tighten the steering knuckle to strut bolts/nuts to the specified torque. This ensures a secure connection between the steering knuckle and the strut.
Rear Suspension
1 Rear Lower Control Arm Cam Bolt and Nut
M14 x 2.0
1
Rear Lower Control Arm Cam Bolt and Nut
M14 x 2.0
Torque Specification
118 ft-lbs (160 N·m)
Important Notes
Tighten the rear lower control arm cam bolt and nut to the specified torque. This is critical for maintaining the rear wheel alignment. It is possible that this bolt will need to be tightened to a torque specification, then to an angle. Consult a service manual for correct torque specification and procedure.
2 Rear Upper Control Arm Bolt and Nut
M14 x 2.0
2
Rear Upper Control Arm Bolt and Nut
M14 x 2.0
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Tighten the rear upper control arm bolt and nut to the specified torque. This is essential for maintaining the rear wheel alignment and proper control arm function. It is possible that this bolt will need to be tightened to a torque specification, then to an angle. Consult a service manual for correct torque specification and procedure.
3 Rear Shock Absorber Mounting Bolts
M12 x 1.75
3
Rear Shock Absorber Mounting Bolts
M12 x 1.75
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Tighten the rear shock absorber mounting bolts to the specified torque. This ensures proper function and alignment of the rear suspension. Make sure the shock is properly seated before tightening. These bolts connect the shock absorber to the vehicle frame or suspension components.
4 Trailing Arm Bolt
M14 x 2.0
4
Trailing Arm Bolt
M14 x 2.0
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
Tighten the trailing arm bolt to the specified torque. These bolts secure the trailing arm to the chassis, which is crucial for the stability of the rear suspension.
Sway Bar
1 Sway Bar Mounting Bracket Bolts
M10 x 1.5
1
Sway Bar Mounting Bracket Bolts
M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Tighten the sway bar mounting bracket bolts to the specified torque. Make sure the bracket is properly aligned and seated before tightening. These bolts attach the sway bar mounting brackets to the vehicle's frame or subframe.
Wheel Hub
1 Wheel Hub/ Bearing Bolts
M14 x 1.5
1
Wheel Hub/ Bearing Bolts
M14 x 1.5
Torque Specification
118 ft-lbs (160 N·m)
Important Notes
Tighten the wheel hub/bearing bolts to the specified torque. Ensure the hub is seated properly before tightening. These bolts secure the wheel hub/bearing assembly to the steering knuckle.
Troubleshooting Guide
Common issues, diagnostic steps, and prevention guidelines
Common Issues
Bolt stretching, stripped threads, uneven torque patterns
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
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
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 are the general torque specifications for a 2017-2019 Buick Lacrosse?
Q1
What are the general torque specifications for a 2017-2019 Buick Lacrosse?
Refer to the vehicle maintenance manual for model-specific torque specifications. Properly calibrated torque wrenches are required for precise tightening.
Q2 Can I use any torque wrench for tightening critical vehicle components?
Q2
Can I use any torque wrench for tightening critical vehicle components?
No. Ensure the torque wrench IS properly calibrated and meets the required specification for the specific task. Using an improperly calibrated wrench can lead to over/under-tightening.
Q3 What IS the recommended tightening sequence for lug nuts?
Q3
What IS the recommended tightening sequence for lug nuts?
Follow the star pattern for tightening lug nuts. Tighten each lug nut in a crosswise manner to ensure even distribution of force and prevent warping of the brake rotor.
Q4 IS it important to follow the specified torque specs for spark plugs?
Q4
IS it important to follow the specified torque specs for spark plugs?
Yes, excessive tightening can damage the spark plug threads or strip the cylinder head. Under-tightening can cause the plug to loosen, leading to ignition issues.
Q5 What are some common torque mistakes to avoid?
Q5
What are some common torque mistakes to avoid?
Over-tightening, using the wrong torque wrench, and improper tightening sequence can all lead to component damage, premature wear, and safety hazards.
Environmental Considerations
Temperature, humidity, and seasonal effects on torque specifications
Temperature Effects
Includes: High Heat, Cold Weather, Thermal Cycling
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
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
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 lacrosse.
- Digital display for accurate readings
- Audible alarm when target torque IS reached
- Multiple units (Nm, ft-lb, in-lb)
- Reversible ratcheting mechanism
Service Procedures
Wheel Bolt Torque
Procedure for properly torquing lug nuts on the Buick lacrosse
- Use a digital torque wrench to tighten the lug nuts to 140 Nm (103 ft-lb).
- Tighten the lug nuts in a star pattern to ensure even distribution of force.
- Re-torque the lug nuts after 50 miles or one week.
Engine Bolt Torque
Procedure for properly torquing engine bolts on the Buick lacrosse
- Use a digital torque wrench to tighten the engine bolts to the specified torque values.
- Refer to the service manual for specific torque values for each bolt.
- Tighten the bolts in a star pattern to ensure even distribution of force.
Technical Service Bulletins
Transmission Bolt Torque
2018-05-15Revised torque specifications for transmission bolts on the 2017-2019 Buick lacrosse
2017-2019 lacrosse
Resolution: Tighten the transmission bolts to 40 Nm (30 ft-lb) in a star pattern.
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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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