Buick Vehicle Models LaCrosse 2010-2016
Buick Vehicle Models LaCrosse 2010-2016 Torque Specifications
Complete Buick Vehicle Models LaCrosse 2010-2016 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
Convert between different torque units
2.4l Engine
Torque specifications for 2.4L Engine
2.4l Engine
Torque specifications for 2.4L Engine
Cylinder Head
1 Cylinder Head Bolts
M11 x 1.5
1
Cylinder Head Bolts
M11 x 1.5
Torque Specification
1. 18 ft-lbs (25 N·m)
2. 90°
3. 90°
Important Notes
Torque in sequence per manufacturer's specification. Final torque is achieved by two additional 90 degree angle turns after the initial torque.
2 Camshaft Bearing Cap Bolts
M8 x 1.25
2
Camshaft Bearing Cap Bolts
M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value, check factory service data. Torque in sequence per manufacturer's specifications.
3 Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
3
Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Torque in sequence, start with the center bolts and work outwards.
4 Valve Cover Bolts
M6 x 1.0
4
Valve Cover Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Torque evenly to prevent leaks. Value converted from inch-lbs.
5 Rocker Arms/Shafts Bolts
M6 x 1.0
5
Rocker Arms/Shafts Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Value converted from inch-lbs
6 Ignition Coil Bolts
M6 x 1.0
6
Ignition Coil Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Value converted from inch-lbs
7 Spark Plugs
M14 x 1.25
7
Spark Plugs
M14 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure spark plugs are properly seated before torquing.
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
Torque in sequence per manufacturer's specification. Final torque achieved by an additional 60 degree angle turn.
2 Connecting Rod Nuts
M9 x 1.25
2
Connecting Rod Nuts
M9 x 1.25
Torque Specification
1. 15 ft-lbs (20 N·m)
2. 70°
Important Notes
Torque in sequence per manufacturer's specification. Final torque achieved by an additional 70 degree angle turn.
3 Flywheel Bolts
M10 x 1.5
3
Flywheel Bolts
M10 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Torque in a star pattern to ensure even pressure.
4 Oil Pan Bolts
M6 x 1.0
4
Oil Pan Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Torque in a cross pattern. Value converted from inch-lbs.
5 Timing Cover Bolts
M6 x 1.0
5
Timing Cover Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Value converted from inch-lbs. Torque in a cross pattern.
6 Knock Sensor Bolt
M8 x 1.25
6
Knock Sensor Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
7 Oil Drain Plug
M12 x 1.75
7
Oil Drain Plug
M12 x 1.75
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new crush washer each time the plug is removed.
8 Water Pump Bolts
M8 x 1.25
8
Water Pump Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Intake System
1 Intake Manifold Bolts
M6 x 1.0
1
Intake Manifold Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Torque in sequence to prevent leaks. Value converted from inch-lbs.
2 Throttle Body Bolts
M6 x 1.0
2
Throttle Body Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Value converted from inch-lbs
3 Fuel Rail Bolts
M6 x 1.0
3
Fuel Rail Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Value converted from inch-lbs
4 Fuel Injector Bolts
M6 x 1.0
4
Fuel Injector Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Value converted from inch-lbs
Timing System
1 Timing Belt/Chain Tensioner Bolt
M8 x 1.25
1
Timing Belt/Chain Tensioner Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
2 Camshaft Sprocket Bolt
M8 x 1.25
2
Camshaft Sprocket Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
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)
2 Thermostat Housing Bolts
M6 x 1.0
2
Thermostat Housing Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Value converted from inch-lbs
Accessory Drive
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. 60°
Important Notes
Final torque is achieved by an additional 60 degree angle turn.
2 Serpentine/Accessory Drive Belt Tensioner Bolt
M8 x 1.25
2
Serpentine/Accessory Drive Belt Tensioner Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
3 Drive Belt Idler Pulley Bolt
M10 x 1.5
3
Drive Belt Idler Pulley Bolt
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Exhaust System
1 EGR Valve Bolts
M8 x 1.25
1
EGR Valve Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Oil System
1 Oil Filter Housing Bolt
N/A
1
Oil Filter Housing Bolt
N/A
Torque Specification
N/A
Important Notes
Hand tighten only.
3.0l Engine
Torque specifications for 3.0L Engine
3.0l Engine
Torque specifications for 3.0L 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°
3. 90°
Important Notes
Tighten bolts in a specific sequence (typically starting from the center and working outwards in a spiral pattern). The final torque is achieved using an angle tightening procedure after initial torque value. Likely stretch bolts, replace when removed.
2 Camshaft Bearing Cap Bolts
M8 x 1.25
2
Camshaft Bearing Cap Bolts
M8 x 1.25
Torque Specification
1. 10 ft-lbs (14 N·m)
2. 60°
Important Notes
Tighten in a specific sequence. Likely stretch bolts, replace when removed. Estimated value.
Crankshaft
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
Tighten in a specific sequence. Likely stretch bolts, replace when removed.
2 Connecting Rod Nuts
M9 x 1.25
2
Connecting Rod Nuts
M9 x 1.25
Torque Specification
1. 15 ft-lbs (20 N·m)
2. 45°
Important Notes
Tighten nuts evenly, in steps, in a sequence. Likely stretch bolts, replace when removed.
3 Flywheel Bolts
M10 x 1.5
3
Flywheel Bolts
M10 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Apply thread locker to bolts prior to installation. Tighten evenly in a star pattern.
4 Crankshaft Pulley/Harmonic Balancer Bolt
M14 x 1.5
4
Crankshaft Pulley/Harmonic Balancer Bolt
M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
This is a critical bolt. It is advised to check the repair manual to see if this bolt is a torque to yield bolt. If so, replace it every time. Estimated value.
Oil System
1 Oil Pan Bolts
M6 x 1.0
1
Oil Pan Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten bolts evenly in a crisscross pattern. This is equivalent to 89 inch-lbs.
2 Oil Filter Housing Bolt
M8 x 1.25
2
Oil Filter Housing Bolt
M8 x 1.25
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Hand-tighten the bolt. Ensure the o-ring seal is in good condition. Estimated value.
3 Oil Drain Plug
M14 x 1.5
3
Oil Drain Plug
M14 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new crush washer each time.
4 Oil Pressure Sensor Bolt
M6 x 1.0
4
Oil Pressure Sensor Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value.
Valve Train
1 Valve Cover Bolts
M6 x 1.0
1
Valve Cover Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly in a crisscross pattern. This is equivalent to 89 inch-lbs.
2 Rocker Arm/Shaft Bolts
M6 x 1.0
2
Rocker Arm/Shaft Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly in a crisscross pattern. This is equivalent to 89 inch-lbs.
3 Camshaft Sprocket Bolt
M8 x 1.25
3
Camshaft Sprocket Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper timing alignment prior to tightening.
Timing System
1 Timing Belt/Chain Tensioner Bolt
M8 x 1.25
1
Timing Belt/Chain Tensioner Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten after proper timing and tensioner adjustment. Ensure timing is correct. Estimated value.
Intake And Exhaust
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
Tighten evenly. This is equivalent to 89 inch-lbs.
2 Intake Manifold Bolts
M6 x 1.0
2
Intake Manifold Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly in a crisscross pattern. This is equivalent to 89 inch-lbs.
3 Exhaust Manifold/Headers Bolts
M8 x 1.25
3
Exhaust Manifold/Headers Bolts
M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten evenly in a specific sequence (usually center outwards).
4 EGR Valve Bolts
M8 x 1.25
4
EGR Valve Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten evenly.
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
Tighten evenly. This is equivalent to 89 inch-lbs.
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
Tighten evenly. This is equivalent to 89 inch-lbs.
Cooling System
1 Water Pump Bolts
M8 x 1.25
1
Water Pump Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten evenly.
2 Water Pump Pulley Bolts
M8 x 1.25
2
Water Pump Pulley Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten evenly.
3 Thermostat Housing Bolts
M6 x 1.0
3
Thermostat Housing Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten evenly. This is equivalent to 89 inch-lbs.
4 Coolant Temperature Sensor Bolt
M6 x 1.0
4
Coolant Temperature Sensor Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value.
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
Use a new crush washer each time.
Accessory Drive
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
Tighten after proper tensioner adjustment. Ensure belt alignment is correct.
2 Drive Belt Idler Pulley Bolt
M10 x 1.5
2
Drive Belt Idler Pulley Bolt
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure proper alignment prior to tightening.
Sensors
1 Crankshaft Position Sensor Bolt
M6 x 1.0
1
Crankshaft Position Sensor Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value.
2 Camshaft Position Sensor Bolt(s)
M6 x 1.0
2
Camshaft Position Sensor Bolt(s)
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value.
3 Knock Sensor Bolt(s)
M8 x 1.25
3
Knock Sensor Bolt(s)
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value. Respect torque values.
3.6l Engine
Torque specifications for 3.6L Engine
3.6l Engine
Torque specifications for 3.6L Engine
Cylinder Head
1 Cylinder Head Bolts
M10 x 1.5
1
Cylinder Head Bolts
M10 x 1.5
Torque Specification
1. 18 ft-lbs (25 N·m)
2. 90°
3. 90°
4. 70°
Important Notes
Cylinder head bolts are torque-to-yield and must be replaced after removal. Use the specified tightening sequence. Final angle is usually 70 degrees, however, this should always be confirmed using the service manual for the specific model.
2 Rocker Arm/Shaft Bolts
M6 x 1.0
2
Rocker Arm/Shaft Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Torque evenly to prevent damage to the rocker arm shaft or cylinder head.
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
Main bearing bolts are often torque-to-yield and should be replaced upon removal. Use the correct tightening sequence. This torque is an estimated value; always reference the specific repair manual. Final angle is usually 60 degrees, however, this should always be confirmed using the service manual for the specific model.
2 Connecting Rod Nuts
M9 x 1.25
2
Connecting Rod Nuts
M9 x 1.25
Torque Specification
1. 15 ft-lbs (20 N·m)
2. 60°
Important Notes
Connecting rod nuts are often torque-to-yield and must be replaced after removal. Use the correct tightening sequence. This torque is an estimated value; always reference the specific repair manual. Final angle is usually 60 degrees, however, this should always be confirmed using the service manual for the specific model.
3 Oil Pan Bolts
M6 x 1.0
3
Oil Pan Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten bolts evenly in a criss-cross pattern to avoid distorting the oil pan flange. Do not over-tighten. Converted from 89 inch-lbs.
4 Oil Drain Plug Bolt
M14 x 1.5
4
Oil Drain Plug Bolt
M14 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new sealing washer each time. Over-tightening may damage the threads in the oil pan.
5 Crankshaft Position Sensor Bolt
M6 x 1.0
5
Crankshaft Position Sensor Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the sensor is properly aligned before tightening. Converted from 89 inch-lbs.
6 Knock Sensor Bolt
M8 x 1.25
6
Knock Sensor Bolt
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Do not over-tighten as the sensor body is sensitive. This is an estimated value, but typical for knock sensor bolts. Always reference a service manual.
7 Timing Cover Bolts
M6 x 1.0
7
Timing Cover Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten in a specific sequence according to the repair manual. Do not over-tighten. This is an estimated value. Converted from 89 inch-lbs.
Valvetrain
1 Camshaft Sprocket Bolt
M8 x 1.25
1
Camshaft Sprocket Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use proper alignment tools during installation to ensure correct valve timing. These bolts may be torque-to-yield and require replacement.
2 Timing Belt/Chain Tensioner Bolt
M8 x 1.25
2
Timing Belt/Chain Tensioner Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Refer to the specific service manual for the procedure. These bolts may be torque-to-yield and require replacement.
3 Variable Valve Timing (VVT) Solenoid Bolt
M6 x 1.0
3
Variable Valve Timing (VVT) Solenoid Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten the solenoid evenly. Converted from 89 inch-lbs.
Intake And Exhaust
1 Intake Manifold Bolts
M6 x 1.0
1
Intake Manifold Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten bolts evenly in the proper sequence. Refer to the repair manual for the correct sequence. Converted from 89 inch-lbs.
2 Throttle Body Bolts
M6 x 1.0
2
Throttle Body Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure a proper seal between the throttle body and intake manifold. Converted from 89 inch-lbs.
3 Exhaust Manifold/Header Bolts
M8 x 1.25
3
Exhaust Manifold/Header Bolts
M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten in sequence from the center bolts outward. May require high temperature thread locker. These may also be studs with nuts.
4 EGR Valve Bolts
M8 x 1.25
4
EGR Valve Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure a proper seal to prevent exhaust leaks. This is an estimated value.
5 Intake Air Temperature (IAT) Sensor
N/A - Hand Tight
5
Intake Air Temperature (IAT) Sensor
N/A - Hand Tight
Torque Specification
N/A
Important Notes
Hand-tighten, then 1/4 turn. Do not over-tighten as the sensor body is delicate. Estimated value of 'zero' is set to note there is no torque spec, this is a hand-tight sensor.
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
Ensure proper alignment. Converted from 89 inch-lbs.
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
Ensure proper seating of the fuel injectors. Converted from 89 inch-lbs.
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
Do not over-tighten. Use a torque wrench and a spark plug socket to avoid damage to the spark plugs 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
Ensure the coil is properly seated over the spark plug. Converted from 89 inch-lbs.
Cooling System
1 Water Pump Bolts
M8 x 1.25
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 in a criss-cross pattern.
2 Water Pump Pulley Bolts
M8 x 1.25
2
Water Pump Pulley Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure pulley is properly aligned on the water pump flange. This is an estimated value.
3 Thermostat Housing Bolts
M6 x 1.0
3
Thermostat Housing Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure a new gasket is used and bolts are tightened evenly to prevent leaks. Converted from 89 inch-lbs.
4 Coolant Temperature Sensor Torque
M12 x 1.5
4
Coolant Temperature Sensor Torque
M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the sensor is properly installed. This is an estimated value.
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
Ensure sensor is properly seated before tightening. Converted from 89 inch-lbs.
2 Oil Pressure Sensor Torque
M12 x 1.5
2
Oil Pressure Sensor Torque
M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the sensor is properly installed. This is an estimated value.
External
1 Crankshaft Pulley/Harmonic Balancer Bolt
M14 x 2.0
1
Crankshaft Pulley/Harmonic Balancer Bolt
M14 x 2.0
Torque Specification
1. 37 ft-lbs (50 N·m)
2. 70°
Important Notes
Crankshaft pulley bolts are often torque-to-yield and should be replaced upon removal. Use the correct tightening sequence. Final angle is usually 70 degrees, however, this should always be confirmed using the service manual for the specific model.
2 Flywheel Bolts
M10 x 1.5
2
Flywheel Bolts
M10 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Apply thread locker to the bolts. Tighten in a star pattern.
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 evenly. Do not over-tighten. Use new gaskets. Converted from 89 inch-lbs.
4 PCV Valve Bolts
M6 x 1.0
4
PCV Valve Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the valve is properly seated with new seal. Converted from 89 inch-lbs.
6t45 Transmission
Torque specifications for 6t45 Transmission
6t45 Transmission
Torque specifications for 6t45 Transmission
Transmission Case
1 Transmission Case Bolts (Housing Bolts)
M10 x 1.5
1
Transmission Case Bolts (Housing Bolts)
M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even pressure distribution. Always use a calibrated torque wrench.
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 transmission is properly aligned before final tightening. Always use a calibrated torque wrench.
Transmission Pan
1 Transmission Oil Pan Bolts
M6 x 1.0
1
Transmission Oil Pan Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even gasket compression. Over-torquing can cause leaks. Always use a calibrated torque wrench.
Fluid Plugs
1 Transmission Fluid Drain/Fill Plug
M18 x 1.5
1
Transmission Fluid Drain/Fill Plug
M18 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new sealing washer. Over-torquing can damage the threads and cause leaks. Always use a calibrated torque wrench.
Valve Body
1 Valve Body Bolts
M6 x 1.0
1
Valve Body Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even sealing. Always use a calibrated torque wrench.
Tcm
1 TCM Mounting Bolts
M6 x 1.0
1
TCM Mounting Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not overtighten these bolts, as this could damage the TCM housing. Always use a calibrated torque wrench.
Cooler Lines
1 Transmission Fluid Cooler Line Fittings
M16 x 1.5
1
Transmission Fluid Cooler Line Fittings
M16 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use new O-rings or sealing washers, and tighten to specified torque to prevent leaks. Always use a calibrated torque wrench.
Output Shaft
1 Output Shaft Retainer Bolt
M12 x 1.75
1
Output Shaft Retainer Bolt
M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the retainer is properly seated before tightening this bolt. Always use a calibrated torque wrench.
Park Pawl
1 Park Pawl Bracket Bolts
M8 x 1.25
1
Park Pawl Bracket Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment of the bracket before tightening. Always use a calibrated torque wrench.
6t75 Transmission
Torque specifications for 6t75 Transmission
6t75 Transmission
Torque specifications for 6t75 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 bolts are clean and free from debris. Use a criss-cross pattern when tightening to ensure even clamping pressure. Consult service manual for the specific torque sequence.
Transmission Case
1 Transmission Case Half Bolts
M10 x 1.5
1
Transmission Case Half Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
These bolts join the two halves of the transmission case together. Tighten in a cross pattern to ensure an even seal. Use new bolts when reassembling the transmission.
2 Transmission Oil Pan Bolts
M6 x 1.0
2
Transmission Oil Pan Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Tighten the oil pan bolts in a criss-cross pattern to avoid leaks. Over-tightening may damage the pan or gasket. Ensure that the pan gasket is in good condition before re-installation.
Transmission Plugs
1 Transmission Drain and Fill Plugs
M18 x 1.5
1
Transmission Drain and Fill Plugs
M18 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Do not over-tighten these plugs as they can strip the threads. Ensure the sealing surface is clean and the sealing washer is in good condition.
Bellhousing
1 Transmission Bellhousing Bolts
M12 x 1.75
1
Transmission Bellhousing Bolts
M12 x 1.75
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Tighten the bellhousing bolts in a criss-cross pattern to ensure even clamping and alignment between the engine and transmission. Ensure bolts are clean, properly torqued to prevent damage to engine and transmission.
Tcm
1 TCM Mounting Bolts
M6 x 1.0
1
TCM Mounting Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
These bolts secure the TCM to the transmission case. Do not over-tighten as the TCM housing can be fragile. Ensure the bolts are properly seated.
Valve Body
1 Valve Body Mounting Bolts
M5 x 0.8
1
Valve Body Mounting Bolts
M5 x 0.8
Torque Specification
6.6 ft-lbs (9 N·m)
Important Notes
Tighten these bolts in a specific sequence to avoid distorting the valve body. Consult the service manual for the correct sequence. Use a properly calibrated torque wrench. Over-tightening may cause internal fluid leaks.
Body
Torque specifications for Body
Body
Torque specifications for Body
Wheel And Tire
1 Wheel Lug Nuts
M14 x 1.5
1
Wheel Lug Nuts
M14 x 1.5
Torque Specification
100 ft-lbs (135 N·m)
Important Notes
Tighten lug nuts in a star pattern. Ensure all lug nuts are correctly torqued.
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 straps are properly aligned before tightening. Avoid over-tightening to prevent damage to the fuel tank or straps.
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
Tighten the bolts carefully. Ensure the filler neck aligns correctly with the fuel door.
Electrical System
1 Battery Terminal Nuts
M6 x 1.0
1
Battery Terminal Nuts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Convert 89 inch-lbs to ft-lbs for clarification. Ensure proper terminal contact and avoid over-tightening.
Body Panels
1 Hood Hinge Bolts (Body Side)
M8 x 1.25
1
Hood Hinge Bolts (Body Side)
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value. Tighten the bolts to ensure the hood aligns correctly with the fenders.
2 Fender Mounting Bolts
M8 x 1.25
2
Fender Mounting Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value. Torque may vary by location, ensure fender alignment and gap are consistent.
3 Bumper Mounting Bolts
M10 x 1.5
3
Bumper Mounting Bolts
M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value, typical for M10 bumper bolts. Ensure even fit.
4 Grille Mounting Bolts
M6 x 1.0
4
Grille Mounting Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Estimated value. Do not over-tighten these small bolts or screws to avoid cracking the grille.
5 Headlamp Assembly Mounting Bolts/Screws
M6 x 1.0
5
Headlamp Assembly Mounting Bolts/Screws
M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Estimated value, typically low torque. Ensure proper headlamp alignment and that the headlamp is secure.
6 Taillight Assembly Mounting Bolts/Screws
M6 x 1.0
6
Taillight Assembly Mounting Bolts/Screws
M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Estimated value, typically low torque. Ensure proper taillight alignment and that the taillight is secure.
Door Components
1 Door Hinge Bolts (Body Side)
M8 x 1.25
1
Door Hinge Bolts (Body Side)
M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Estimated value, ensure proper door alignment and smooth opening and closing operation.
2 Door Latch/Striker Bolts (Body Side)
M8 x 1.25
2
Door Latch/Striker Bolts (Body Side)
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value, proper striker alignment with the latch is crucial for safe and reliable operation of the door.
Interior Components
1 Seat Mounting Bolts
M10 x 1.5
1
Seat Mounting Bolts
M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value. Torque may vary based on seat position. Ensure all seats are securely mounted.
2 Seat Belt Anchor Bolts
M10 x 1.5
2
Seat Belt Anchor Bolts
M10 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value. Torque is critical. Ensure seatbelt mounting points are properly secured.
Brakes
Torque specifications for Brakes
Brakes
Torque specifications for Brakes
Brake Calipers
1 Caliper Mounting Bolts
M10 x 1.5
1
Caliper Mounting Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Secures the caliper to the mounting bracket. Ensure proper seating before tightening. Estimated value; refer to service manual for precise specification.
2 Brake Hose Banjo Bolt (Caliper)
M10 x 1.0
2
Brake Hose Banjo Bolt (Caliper)
M10 x 1.0
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Connects the flexible brake hose to the caliper. Always use new crush washers. Estimated value; refer to service manual for precise specification.
3 Brake Bleeder Screw
M7 x 1.0
3
Brake Bleeder Screw
M7 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Seals the bleeder port on the caliper. Do not overtighten. Estimated value; refer to service manual for precise specification.
Caliper Mounting Bracket
1 Mounting Bracket Bolts
M12 x 1.75
1
Mounting Bracket Bolts
M12 x 1.75
Torque Specification
110 ft-lbs (150 N·m)
Important Notes
Secures the bracket to the steering knuckle/hub. Ensure proper alignment. Estimated value; refer to service manual for precise specification.
Brake Rotor Drum
1 Rotor/Drum Retaining Bolts
M6 x 1.0
1
Rotor/Drum Retaining Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Holds rotor/drum to the hub for ease of wheel installation. Use a cross-tightening pattern. Estimated value; refer to service manual for precise specification.
Brake Lines
1 Brake Line Fittings (Hard Lines)
M10 x 1.0
1
Brake Line Fittings (Hard Lines)
M10 x 1.0
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Connects rigid brake lines, must ensure proper flare seat. Estimated value; refer to service manual for precise specification.
2 Brake Hose Banjo Bolt (Chassis)
M12 x 1.25
2
Brake Hose Banjo Bolt (Chassis)
M12 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Connects flexible brake hose to chassis hard line. Always use new crush washers. Estimated value; refer to service manual for precise specification.
Master Cylinder
1 Master Cylinder Mounting Bolts
M8 x 1.25
1
Master Cylinder Mounting Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Mounts the master cylinder to the brake booster. Ensure even tightening. Estimated value; refer to service manual for precise specification.
Brake Booster
1 Brake Booster Mounting Bolts/Nuts
M8 x 1.25
1
Brake Booster Mounting Bolts/Nuts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Secures the booster to the firewall. Ensure a flush fit before tightening. Estimated value; refer to service manual for precise specification.
Wheel Mounting
1 Wheel Lug Nuts
M14 x 1.5
1
Wheel Lug Nuts
M14 x 1.5
Torque Specification
100 ft-lbs (135 N·m)
Important Notes
Secures the wheel and brake rotor/drum to the hub. Always use a star pattern. Estimated value; refer to service manual for precise specification.
Drivetrain
Torque specifications for Drivetrain
Drivetrain
Torque specifications for Drivetrain
Engine To Transmission
1 Flywheel Bolts
M12 x 1.25
1
Flywheel Bolts
M12 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure flywheel surface and bolt threads are clean and lightly lubricated before installation. Tighten in a star pattern to ensure even clamping pressure.
2 Torque Converter Bolts (to Flexplate/Flywheel)
M10 x 1.25
2
Torque Converter Bolts (to Flexplate/Flywheel)
M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure correct alignment of the torque converter before installing bolts. Estimated value, refer to vehicle specific service manual for exact value.
3 Transmission Bellhousing Bolts
M12 x 1.75
3
Transmission Bellhousing Bolts
M12 x 1.75
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Ensure proper alignment of transmission to engine. Estimated value, refer to vehicle specific service manual for exact value.
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 transmission is properly positioned before tightening. Check and retorque after initial road test.
Driveshaft
1 Propeller/Drive Shaft Bolts
M10 x 1.5
1
Propeller/Drive Shaft Bolts
M10 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Tighten in a star pattern to ensure balanced load and even pressure on the flanges. Ensure proper driveline alignment.
2 Driveshaft Center Support Bearing Bolts
M10 x 1.5
2
Driveshaft Center Support Bearing Bolts
M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure correct alignment of the bearing before tightening. Estimated value, refer to vehicle specific service manual for exact value.
3 Transmission Output Flange Bolts
M10 x 1.5
3
Transmission Output Flange Bolts
M10 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure proper alignment of the flange. Estimated value, refer to vehicle specific service manual for exact value.
Drive 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
Ensure axle is fully seated before tightening. Tighten to specification to prevent loosening or damage.
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
Always replace the axle nut with a new one. Stake or lock nut as per manufacturer procedure. This nut also preloads the wheel bearing.
Differential
1 Differential Cover Bolts
M8 x 1.25
1
Differential Cover Bolts
M8 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Tighten cover bolts in a criss-cross pattern to ensure even pressure and prevent leaks. Estimated value, refer to vehicle specific service manual for exact value.
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 sealing washer. Do not over tighten.
Transfer Case
1 Transfer Case Mounting Bolts
M12 x 1.75
1
Transfer Case Mounting Bolts
M12 x 1.75
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Ensure proper alignment of transfer case to frame or transmission. Estimated value, refer to vehicle specific service manual for exact value.
2 Transfer Case Drain/Fill Plug
M18 x 1.5
2
Transfer Case Drain/Fill Plug
M18 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use a new sealing washer. Do not over tighten.
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
Ensure coil is properly seated before tightening. Do not overtighten.
2 Spark Plug
M14 x 1.25
2
Spark Plug
M14 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure spark plug threads are clean and lightly lubricated with anti-seize compound. Do not overtighten.
Starting System
1 Starter Motor Mounting Bolt
M10 x 1.5
1
Starter Motor Mounting Bolt
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the starter motor is properly aligned with the flywheel/flexplate before tightening. Torque all bolts evenly.
Charging System
1 Alternator Mounting Bolt
M10 x 1.5
1
Alternator Mounting Bolt
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure alternator is aligned with the serpentine belt. Torque all bolts evenly.
2 Battery Terminal Nut
M6 x 1.0
2
Battery Terminal Nut
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure terminal and nut threads are clean and free of corrosion. Do not overtighten.
Ground Connections
1 Ground Strap/Wire Mounting Bolt/Screw
M8 x 1.25
1
Ground Strap/Wire Mounting Bolt/Screw
M8 x 1.25
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure contact surfaces are clean and free of corrosion. Multiple ground points may exist throughout the vehicle. This value is an estimate, always consult specific service information if available.
Control Modules
1 Engine Control Module (ECM) Mounting Bolt
M6 x 1.0
1
Engine Control Module (ECM) Mounting Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure ECM is properly aligned on mounting points. Do not overtighten. This value is an estimate, always consult specific service information if available.
2 Body Control Module (BCM) Mounting Bolt
M6 x 1.0
2
Body Control Module (BCM) Mounting Bolt
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure BCM is properly aligned on mounting points. Do not overtighten. This value is an estimate, always consult specific service information if available.
Sensors
1 Sensor Mounting Bolt/Screw (Generic)
M6 x 1.0
1
Sensor Mounting Bolt/Screw (Generic)
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
This torque specification is a general guideline for typical small sensor mounting bolts. Consult the specific service information for each sensor for precise torque values. Estimated value.
Emissions Sensors
Torque specifications for Emissions_sensors
Emissions Sensors
Torque specifications for Emissions_sensors
Exhaust System
1 Exhaust Manifold to Cylinder Head Bolts
M8 x 1.25
1
Exhaust Manifold to Cylinder Head Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure even tightening to prevent leaks. Work in a cross-tightening pattern.
2 Exhaust Manifold/Header Bolts
M10 x 1.5
2
Exhaust Manifold/Header Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten evenly to prevent leaks. Work in a cross-tightening pattern.
3 Catalytic Converter to Exhaust Pipe Bolts
M12 x 1.75
3
Catalytic Converter to Exhaust Pipe Bolts
M12 x 1.75
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten flange bolts evenly to ensure a leak-free seal. Use new gaskets if required.
4 Oxygen Sensor (O2) Mounting Bolt/Stud
M8 x 1.25
4
Oxygen Sensor (O2) Mounting Bolt/Stud
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
If a compression washer is present, ensure it is properly seated before tightening. Be careful not to overtighten to avoid damaging the sensor.
Egr System
1 EGR Valve Bolts
M8 x 1.25
1
EGR Valve Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure even tightening to prevent leaks. Use new gaskets if required.
Intake System
1 Mass Air Flow (MAF) Sensor Mounting Bolts
M5 x 0.8
1
Mass Air Flow (MAF) Sensor Mounting Bolts
M5 x 0.8
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Do not overtighten as this can damage the sensor housing. Use a calibrated torque wrench for accuracy.
2 Intake Air Temperature (IAT) Sensor Mounting Bolts
M5 x 0.8
2
Intake Air Temperature (IAT) Sensor Mounting Bolts
M5 x 0.8
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Do not overtighten as this can damage the sensor housing. Use a calibrated torque wrench for accuracy.
3 Manifold Absolute Pressure (MAP) Sensor Mounting Bolts
M5 x 0.8
3
Manifold Absolute Pressure (MAP) Sensor Mounting Bolts
M5 x 0.8
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Ensure O-ring is properly seated. Do not overtighten to avoid damage to the sensor or intake manifold.
Evap System
1 EVAP Canister Purge Valve Mounting Bolts
M5 x 0.8
1
EVAP Canister Purge Valve Mounting Bolts
M5 x 0.8
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Do not overtighten these bolts as they are often fastened into a plastic housing. Use a calibrated torque wrench.
Exhaust
Torque specifications for Exhaust
Exhaust
Torque specifications for Exhaust
Exhaust Manifold
1 Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
1
Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
Torque Specification
1. 9 ft-lbs (12 N·m)
2. 18 ft-lbs (25 N·m)
Important Notes
Torque bolts in a crisscross pattern to ensure even pressure and prevent leaks. Apply first torque in sequence, then second. Check manufacturer's torque sequence.
2 Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.5
2
Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure the gasket is properly aligned before tightening. Tighten bolts evenly to prevent leaks.
Catalytic Converter
1 Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.5
1
Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Tighten bolts evenly to prevent leaks. Ensure proper gasket alignment.
Muffler
1 Muffler to Exhaust Pipe Bolts
M10 x 1.5
1
Muffler to Exhaust Pipe Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure proper alignment and gasket placement for a leak-free seal. Support the muffler during installation.
Exhaust Hangers
1 Exhaust Hanger Bolts (8mm)
M8 x 1.25
1
Exhaust Hanger Bolts (8mm)
M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure hangers are properly aligned. Use appropriate washers. Torque to specification.
2 Exhaust Hanger Bolts (10mm)
M10 x 1.5
2
Exhaust Hanger Bolts (10mm)
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure hangers are properly aligned. Use appropriate washers. Torque to specification.
3 Exhaust Hanger Bolts (Large Hangers)
M12 x 1.75
3
Exhaust Hanger Bolts (Large Hangers)
M12 x 1.75
Torque Specification
60 ft-lbs (80 N·m)
Important Notes
Use appropriate washers, large hangers might have larger hardware. This is an estimated value - refer to your specific vehicle manual. Always use correct torque value.
Exhaust Flanges
1 Exhaust Flange Bolts/Nuts
M10 x 1.5
1
Exhaust Flange Bolts/Nuts
M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure proper gasket alignment. Tighten bolts in a crisscross pattern to ensure even sealing. This is an estimated value, refer to specific vehicle manual for confirmation.
2 Exhaust Flange Bolts/Nuts (Larger)
M12 x 1.75
2
Exhaust Flange Bolts/Nuts (Larger)
M12 x 1.75
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure proper gasket alignment. Tighten bolts in a crisscross pattern to ensure even sealing. This is an estimated value, refer to specific vehicle manual for confirmation.
Oxygen Sensors
1 Oxygen (O2) Sensor
N/A
1
Oxygen (O2) Sensor
N/A
Torque Specification
27 ft-lbs (37 N·m)
Important Notes
Apply anti-seize compound to the threads of the sensor. Do not over-tighten as this could damage the sensor. This value is an estimate, consult your sensor's datasheet.
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 fuel rail is properly seated before tightening. Tighten all bolts in an alternating pattern to ensure even clamping force.
2 Fuel Injector Mounting Bolts/Nuts
M6 x 1.0
2
Fuel Injector Mounting Bolts/Nuts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure new injector O-rings are lightly lubricated with clean engine oil or assembly lube. Avoid pinching or damaging the O-rings during installation. Tighten all bolts evenly.
3 Fuel Pressure Regulator Mounting Bolts (if applicable)
M6 x 1.0
3
Fuel Pressure Regulator Mounting Bolts (if applicable)
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
If present, ensure the regulator is seated properly before tightening. These values are an estimate, always refer to a service manual for the specific vehicle
Fuel Pump
1 Fuel Pump Module Mounting Bolts
M6 x 1.0
1
Fuel Pump Module Mounting Bolts
M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the fuel pump module O-ring is properly seated and the module sits flush against the tank. Do not over-tighten to avoid damaging the tank.
2 Fuel Tank Strap Bolts
M10 x 1.5
2
Fuel Tank Strap Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure straps are properly aligned and not twisted before tightening. Tighten all bolts to the specified torque to prevent fuel tank movement.
Fuel Lines And Filter
1 Fuel Filter Mounting Bolts/Nuts
M8 x 1.25
1
Fuel Filter Mounting Bolts/Nuts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the fuel filter is properly seated in its bracket or housing before tightening. Do not over-tighten to avoid damaging the filter housing. Some filters may use clamp nuts. Be sure to use proper hardware.
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 filler neck is properly aligned to the body and seal is properly seated before tightening. Do not over-tighten the bolts to avoid damaging the filler neck.
3 Fuel Line Fittings
Varies
3
Fuel Line Fittings
Varies
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Fuel line fitting torques vary greatly based on size and fitting material. This value is an estimate for a small-to-medium-sized fitting and should be verified using the specific OEM repair manual for your vehicle. Always use a line wrench and avoid over-tightening. Be extremely careful not to cross-thread fuel line fittings.
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 tightened evenly to prevent compressor misalignment.
Ac Lines
1 A/C Line Fittings
Assorted - Mostly M6 x 1.0 to M8 x 1.25
1
A/C Line Fittings
Assorted - Mostly M6 x 1.0 to M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
This is a general torque for all small A/C line fittings. Specific fitting sizes may vary. Do not overtighten.
Blower Motor
1 HVAC Blower Motor Mounting Bolts/Screws
M5 x 0.8
1
HVAC Blower Motor Mounting Bolts/Screws
M5 x 0.8
Torque Specification
6.6 ft-lbs (9 N·m)
Important Notes
Torque range is to account for small variations in bolt sizes, these are generally screws.
2 HVAC Blower Motor Mounting Bolts/Screws
M6 x 1.0
2
HVAC Blower Motor Mounting Bolts/Screws
M6 x 1.0
Torque Specification
7.8 ft-lbs (10.6 N·m)
Important Notes
Torque range is to account for small variations in bolt sizes, these are generally screws.
Control Module
1 HVAC Control Module Mounting Screws
M4 x 0.7
1
HVAC Control Module Mounting Screws
M4 x 0.7
Torque Specification
1.2 ft-lbs (1.6 N·m)
Important Notes
Use caution when tightening as the module housing is plastic. Estimated value.
Condenser
1 Condenser Mounting Bolts
M8 x 1.25
1
Condenser Mounting Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure bolts are tightened evenly to prevent damage.
Evaporator
1 Evaporator Housing Mounting Bolts/Screws
M5 x 0.8
1
Evaporator Housing Mounting Bolts/Screws
M5 x 0.8
Torque Specification
6.6 ft-lbs (9 N·m)
Important Notes
The housing is plastic and can be damaged by over-tightening, These are generally screws.
2 Evaporator Housing Mounting Bolts/Screws
M6 x 1.0
2
Evaporator Housing Mounting Bolts/Screws
M6 x 1.0
Torque Specification
7.8 ft-lbs (10.6 N·m)
Important Notes
The housing is plastic and can be damaged by over-tightening, These are generally screws.
Blend Door Actuator
1 HVAC Blend Door Actuator Mounting Screws
M4 x 0.7
1
HVAC Blend Door Actuator Mounting Screws
M4 x 0.7
Torque Specification
3.3 ft-lbs (4.5 N·m)
Important Notes
Actuator housings are plastic and can be easily broken if over-tightened. Estimated value.
2 HVAC Blend Door Actuator Mounting Screws
M5 x 0.8
2
HVAC Blend Door Actuator Mounting Screws
M5 x 0.8
Torque Specification
4.4 ft-lbs (6 N·m)
Important Notes
Actuator housings are plastic and can be easily broken if over-tightened. Estimated value.
Suspension
Torque specifications for Suspension
Suspension
Torque specifications for Suspension
Front Strut Assembly
1 Front Strut to Steering Knuckle Bolts
M14 x 1.5
1
Front Strut to Steering Knuckle Bolts
M14 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
These are often pinch bolts. Ensure proper alignment of the strut before tightening. Estimated value.
2 Upper Strut Mounting Bolts
M10 x 1.25
2
Upper Strut Mounting Bolts
M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
These bolts secure the upper strut mount to the vehicle's chassis. Tighten in a cross pattern.
Front Control Arms
1 Control Arm to Frame Mounting Bolts
M14 x 1.5
1
Control Arm to Frame Mounting Bolts
M14 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure the control arm is properly aligned before tightening. Estimated value based on standard bolt.
2 Lower Control Arm to Subframe Mounting Bolts
M16 x 1.5
2
Lower Control Arm to Subframe Mounting Bolts
M16 x 1.5
Torque Specification
110 ft-lbs (150 N·m)
Important Notes
These bolts secure the control arm to the subframe if applicable. Estimated value.
3 Ball Joint Nut
M14 x 1.5
3
Ball Joint Nut
M14 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Secures ball joint to control arm or knuckle. Estimated value.
Front Steering
1 Tie Rod End Nut
M12 x 1.25
1
Tie Rod End Nut
M12 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Secures tie rod end to the steering knuckle. Essential for steering alignment.
2 Steering Gear/Rack Mounting Bolts
M12 x 1.75
2
Steering Gear/Rack Mounting Bolts
M12 x 1.75
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Mounting the steering rack to the subframe. Ensure proper rack alignment before tightening.
Front Sway Bar
1 Sway Bar Link Nut
M10 x 1.5
1
Sway Bar Link Nut
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Secures the sway bar link to the sway bar and strut/control arm. Estimated value.
2 Sway Bar Mounting Bracket Bolts
M8 x 1.25
2
Sway Bar Mounting Bracket Bolts
M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Bolts that secure sway bar bracket to the frame. Ensure correct bracket position.
Rear Suspension
1 Rear Shock to Lower Control Arm Bolt
M12 x 1.75
1
Rear Shock to Lower Control Arm Bolt
M12 x 1.75
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Secures the rear shock to the lower control arm. Estimated value.
2 Rear Control Arm Mounting Bolts
M14 x 1.5
2
Rear Control Arm Mounting Bolts
M14 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Mounts the rear control arm to the chassis. Estimated value.
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 IS the recommended torque specification for the cylinder head bolts on a 2010-2016 Buick Lacrosse?
Q1
What IS the recommended torque specification for the cylinder head bolts on a 2010-2016 Buick Lacrosse?
The cylinder head bolts should be torqued to 65 ft-lbs (88 Nm) in three stages: 20 ft-lbs (27 Nm), 45 ft-lbs (61 Nm), and finally to 65 ft-lbs (88 Nm). It IS crucial to follow the specified torque sequence as per Buick's guidelines.
Q2 What type of torque wrench IS recommended for tightening critical bolts on a Buick Lacrosse?
Q2
What type of torque wrench IS recommended for tightening critical bolts on a Buick Lacrosse?
For accurate and reliable torque application, a calibrated click-type torque wrench IS highly recommended. Ensure the torque wrench IS within its specified calibration range and has been recently certified to meet industry standards.
Q3 How can I prevent over-tightening bolts on my Buick Lacrosse?
Q3
How can I prevent over-tightening bolts on my Buick Lacrosse?
Over-tightening bolts can lead to stripped threads or damaged components. Always use a torque wrench and strictly adhere to the specified torque values provided in the service manual. Avoid using impact wrenches for final tightening, as they can easily exceed the recommended torque.
Q4 What are the consequences of under-tightening bolts on a Buick Lacrosse?
Q4
What are the consequences of under-tightening bolts on a Buick Lacrosse?
Under-tightened bolts can result in loose components, oil or fluid leaks, and even catastrophic failures. Ensure all bolts are tightened to the specified torque values to maintain proper assembly and functionality.
Q5 IS it necessary to re-torque bolts after a certain period of time on my Buick Lacrosse?
Q5
IS it necessary to re-torque bolts after a certain period of time on my Buick Lacrosse?
In general, it IS not necessary to re-torque bolts unless specified in the service manual or if there are signs of loosening. However, if you have performed any major repairs or disassembled critical components, it IS advisable to re-torque the bolts to ensure proper tightness.
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
Bolt Torque Specifications for 2010-2016 Buick lacrosse
This procedure outlines the recommended torque specifications for various bolts and fasteners found in the 2010-2016 Buick lacrosse. Failure to follow these specifications may result in improper assembly, damage to components, or safety hazards.
- Locate the specific bolt or fastener in question using the provided diagrams or part numbers.
- Refer to the table below to determine the recommended torque specification.
- Use a calibrated digital torque wrench to tighten the bolt or fastener to the specified torque.
- Double-check the tightness and ensure that the bolt or fastener IS securely fastened.
- Note: Additional safety precautions and specific instructions may apply depending on the location and function of the bolt or fastener.
Technical Service Bulletins
Legal Disclaimer
Important information about using this content
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General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
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We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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