Pontiac Vehicle Models Pontiac G8 2008-2009 Torque Specifications
Pontiac Vehicle Models Pontiac G8 2008-2009

Pontiac Vehicle Models Pontiac G8 2008-2009 Torque Specifications

Complete Pontiac Vehicle Models Pontiac G8 2008-2009 torque specifications guide. Includes factory-specified torque values, torque sequences, and technical specifications for all components including body, brakes, drivetrain, electrical, emissions sensors, fuel, exhaust, HVAC, and suspension. Essential information for proper assembly and maintenance.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

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Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

3.6l Engine

Torque specifications for 3.6L Engine

Cylinder Head and Valve Train

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
2

Valve Cover Bolts

M8 x 1.25
Torque Specification
3.25 ft-lbs (5 N·m)
Important Notes
Estimated value based on similar components.
3

Rocker Arms/Shafts Bolts

M10 x 1.5
Torque Specification
6.6 ft-lbs (10 N·m)

Engine Block and Main Bearings

1

Main Bearing Bolts

M14 x 2.0
Torque Specification
37 ft-lbs (50 N·m)
2

Engine Block to Transmission Mounting Bolts

M12 x 1.75
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated value based on industry standards.

Crankshaft and Connecting Rods

1

Connecting Rod Nuts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 2.0
Torque Specification
74 ft-lbs (100 N·m)

Timing System

1

Timing Belt/Chain Tensioner Bolt

M10 x 1.5
Torque Specification
6.6 ft-lbs (10 N·m)
2

Camshaft Sprocket Bolt

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)

Engine Accessories

1

Water Pump Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
2

Thermostat Housing Bolts

M8 x 1.25
Torque Specification
6.6 ft-lbs (10 N·m)
3

Oil Pan Bolts

M10 x 1.5
Torque Specification
7.8 ft-lbs (12 N·m)
Important Notes
Estimated value based on similar components.

Exhaust System

1

Exhaust Manifold/Headers Bolts

M12 x 1.75
Torque Specification
26 ft-lbs (35 N·m)

Intake System

1

Intake Manifold Bolts

M12 x 1.75
Torque Specification
8.5 ft-lbs (13 N·m)
Important Notes
Estimated value based on similar components.

Engine Mounts

1

Engine Mounting Bolts

M14 x 2.0
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated value based on industry standards.

Flywheel and Clutch

1

Flywheel Bolts

M14 x 2.0
Torque Specification
74 ft-lbs (100 N·m)

Spark Plugs

1

Spark Plugs

M14 x 1.25
Torque Specification
13 ft-lbs (18 N·m)

3.6l V6 Engine

Torque specifications for 3.6L-V6 Engine

Cylinder Head and Valve Train

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
2

Valve Cover Bolts

M8 x 1.25
Torque Specification
3.25 ft-lbs (5 N·m)
Important Notes
Estimated value based on similar components.
3

Rocker Arms/Shafts Bolts

M10 x 1.5
Torque Specification
6.6 ft-lbs (10 N·m)

Engine Block and Main Bearings

1

Main Bearing Bolts

M14 x 2.0
Torque Specification
37 ft-lbs (50 N·m)
2

Engine Block to Transmission Mounting Bolts

M12 x 1.75
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated value based on industry standards.

Crankshaft and Connecting Rods

1

Connecting Rod Nuts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 2.0
Torque Specification
74 ft-lbs (100 N·m)

Timing System

1

Timing Belt/Chain Tensioner Bolt

M10 x 1.5
Torque Specification
6.6 ft-lbs (10 N·m)
2

Camshaft Sprocket Bolt

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)

Engine Accessories

1

Water Pump Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
2

Thermostat Housing Bolts

M8 x 1.25
Torque Specification
6.6 ft-lbs (10 N·m)
3

Oil Pan Bolts

M10 x 1.5
Torque Specification
7.8 ft-lbs (12 N·m)
Important Notes
Estimated value based on similar components.

Exhaust System

1

Exhaust Manifold/Headers Bolts

M12 x 1.75
Torque Specification
26 ft-lbs (35 N·m)

Intake System

1

Intake Manifold Bolts

M12 x 1.75
Torque Specification
8.5 ft-lbs (13 N·m)
Important Notes
Estimated value based on similar components.

Engine Mounts

1

Engine Mounting Bolts

M14 x 2.0
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated value based on industry standards.

Flywheel and Clutch

1

Flywheel Bolts

M14 x 2.0
Torque Specification
74 ft-lbs (100 N·m)

Spark Plugs

1

Spark Plugs

M14 x 1.25
Torque Specification
13 ft-lbs (18 N·m)

5l40 Transmission

Torque specifications for 5l40 Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
These bolts secure the transmission to the engine block or transmission crossmember.
2

Transmission Bellhousing Bolts

M14 x 1.25
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Estimated value based on general industry standards. These bolts secure the bellhousing to the engine block.

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M10 x 1.25
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
These bolts secure the oil pan to the transmission.

Transmission Fluid System

1

Transmission Drain and Fill Plugs

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
These plugs are used to drain and fill the transmission fluid.
2

Transmission Fluid Drain/Fill Plug

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
This plug is used to drain and fill the transmission fluid.
3

Transmission Cooler Line Fittings

M10 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on general industry standards. These fittings connect the transmission cooler lines to the transmission.

Transmission Filter

1

Transmission Filter Bolts

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on general industry standards. These bolts secure the transmission filter to the transmission.

Transmission Crossmember

1

Transmission Crossmember Bolts

M14 x 1.25
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated value based on general industry standards. These bolts secure the transmission crossmember to the frame.

6.0l Engine

Torque specifications for 6.0L Engine

Cylinder Head

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)

Engine Block

1

Main Bearing Bolts

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2

Engine Block to Transmission Mounting Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated value based on general engine design.
3

Engine Block to Engine Mounting Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated value based on general engine design.

Crankshaft

1

Connecting Rod Nuts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Flywheel Bolts

M14 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
3

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Specification
74 ft-lbs (100 N·m)

Camshaft

1

Camshaft Sprocket Bolt

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2

Camshaft Position Sensor Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on general engine design.

Valvetrain

1

Rocker Arms/Shafts Bolts

M10 x 1.5
Torque Specification
89 in-lbs (10 N·m)
2

Valve Cover Bolts

M8 x 1.25
Torque Specification
44 in-lbs (5 N·m)

Timing System

1

Timing Belt/Chain Tensioner Bolt

M10 x 1.5
Torque Specification
89 in-lbs (10 N·m)

Cooling System

1

Water Pump Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
2

Water Pump Pulley Bolts

M10 x 1.5
Torque Specification
115 in-lbs (13 N·m)
3

Thermostat Housing Bolts

M10 x 1.5
Torque Specification
89 in-lbs (10 N·m)
4

Engine Oil Cooler Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on general engine design.

Lubrication System

1

Oil Pan Bolts

M10 x 1.5
Torque Specification
106 in-lbs (12 N·m)
2

Oil Filter Housing Bolt

M10 x 1.5
Torque Specification
N/A
Important Notes
Hand tight only.
3

Oil Drain Plug Bolt

M12 x 1.5
Torque Specification
18 ft-lbs (24 N·m)

Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
13 ft-lbs (18 N·m)

6.0l V8 Engine

Torque specifications for 6.0L-V8 Engine

Cylinder Head

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)

Engine Block

1

Main Bearing Bolts

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2

Engine Block to Transmission Mounting Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated value based on general engine design.
3

Engine Block to Engine Mounting Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated value based on general engine design.

Crankshaft

1

Connecting Rod Nuts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Flywheel Bolts

M14 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
3

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Specification
74 ft-lbs (100 N·m)

Camshaft

1

Camshaft Sprocket Bolt

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2

Camshaft Position Sensor Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on general engine design.

Valvetrain

1

Rocker Arms/Shafts Bolts

M10 x 1.5
Torque Specification
89 in-lbs (10 N·m)
2

Valve Cover Bolts

M8 x 1.25
Torque Specification
44 in-lbs (5 N·m)

Timing System

1

Timing Belt/Chain Tensioner Bolt

M10 x 1.5
Torque Specification
89 in-lbs (10 N·m)

Cooling System

1

Water Pump Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
2

Water Pump Pulley Bolts

M10 x 1.5
Torque Specification
115 in-lbs (13 N·m)
3

Thermostat Housing Bolts

M10 x 1.5
Torque Specification
89 in-lbs (10 N·m)
4

Engine Oil Cooler Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on general engine design.

Lubrication System

1

Oil Pan Bolts

M10 x 1.5
Torque Specification
106 in-lbs (12 N·m)
2

Oil Filter Housing Bolt

M10 x 1.5
Torque Specification
N/A
Important Notes
Hand tight only.
3

Oil Drain Plug Bolt

M12 x 1.5
Torque Specification
18 ft-lbs (24 N·m)

Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
13 ft-lbs (18 N·m)

6.2l Engine

Torque specifications for 6.2L Engine

Cylinder Head and Engine Block

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
2

Cylinder Head to Engine Block Studs

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Estimated value based on industry standards.

Main Bearings and Crankshaft

1

Main Bearing Bolts

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Specification
74 ft-lbs (100 N·m)

Valve Train and Timing System

1

Valve Cover Bolts

M8 x 1.25
Torque Specification
44 in-lbs (5 N·m)
2

Timing Belt/Chain Tensioner Bolt

M10 x 1.5
Torque Specification
89 in-lbs (10 N·m)
3

Camshaft Sprocket Bolt

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)

Oil System and Cooling System

1

Oil Pan Bolts

M10 x 1.5
Torque Specification
106 in-lbs (12 N·m)
2

Water Pump Bolts

M12 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
3

Water Pump Pulley Bolts

M10 x 1.5
Torque Specification
115 in-lbs (13 N·m)

Engine Mounts and Transmission Mounts

1

Engine Block to Transmission Mounting Bolts

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated value based on industry standards.
2

Engine Block to Engine Mounting Bolts

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated value based on industry standards.

Spark Plugs and Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
13 ft-lbs (18 N·m)

6.2l V8 Engine

Torque specifications for 6.2L-V8 Engine

Cylinder Head and Engine Block

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
2

Cylinder Head to Engine Block Studs

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Estimated value based on industry standards.

Main Bearings and Crankshaft

1

Main Bearing Bolts

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Specification
74 ft-lbs (100 N·m)

Valve Train and Timing System

1

Valve Cover Bolts

M8 x 1.25
Torque Specification
44 in-lbs (5 N·m)
2

Timing Belt/Chain Tensioner Bolt

M10 x 1.5
Torque Specification
89 in-lbs (10 N·m)
3

Camshaft Sprocket Bolt

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)

Oil System and Cooling System

1

Oil Pan Bolts

M10 x 1.5
Torque Specification
106 in-lbs (12 N·m)
2

Water Pump Bolts

M12 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
3

Water Pump Pulley Bolts

M10 x 1.5
Torque Specification
115 in-lbs (13 N·m)

Engine Mounts and Transmission Mounts

1

Engine Block to Transmission Mounting Bolts

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated value based on industry standards.
2

Engine Block to Engine Mounting Bolts

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated value based on industry standards.

Spark Plugs and Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
13 ft-lbs (18 N·m)

6l80 Transmission

Torque specifications for 6l80 Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M8 x 1.25
Torque Specification
9.4 ft-lbs (12 N·m)
Important Notes
Estimated bolt size and torque value based on similar components.

Transmission Fluid Drain and Fill

1

Transmission Drain and Fill Plugs

M14 x 1.5
Torque Specification
15 ft-lbs (20 N·m)

Transmission Bellhousing

1

Transmission Bellhousing Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated torque value based on similar components.

Transmission Crossmember

1

Transmission Crossmember Bolts

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated torque value based on similar components.

Transmission Cooler Line Fittings

1

Transmission Cooler Line Fittings

M10 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated torque value based on similar components.

Torque Converter

1

Torque Converter Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated torque value based on similar components.

Transmission Pan Gasket

1

Transmission Pan Gasket Bolts

M8 x 1.25
Torque Specification
9.4 ft-lbs (12 N·m)
Important Notes
Estimated torque value based on similar components.

Body

Torque specifications for Body

Suspension

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
129 ft-lbs (175 N·m)
Important Notes
Secure the strut/shock absorbers to the vehicle's body.
2

Control Arm Bolts

M14 x 1.5
Torque Specification
129 ft-lbs (175 N·m)
Important Notes
Attach the control arms to the vehicle's body.
3

Steering Gear/Rack Bolts

M14 x 1.5
Torque Specification
129 ft-lbs (175 N·m)
Important Notes
Secure the steering gear/rack to the vehicle's body.
4

Ball Joint Nut

M16 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Secure the ball joint to the control arm.
5

Tie Rod End Nut

M14 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Secure the tie rod end to the steering gear/rack.
6

Sway Bar Link Nut

M16 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Secure the sway bar link to the vehicle's body.

Brakes

1

Brake Caliper Bolts

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Attach the brake calipers to the vehicle's body.
2

Brake Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
129 ft-lbs (175 N·m)
Important Notes
Secure the brake caliper mounting brackets to the vehicle's body.

Body Panels

1

Body Panel Bolts (e.g., hood, trunk, doors)

M8 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Secure the body panels to the vehicle's frame.
2

Bumper Mounting Bolts

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Secure the bumpers to the vehicle's body.
3

Fender Mounting Bolts

M8 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Secure the fenders to the vehicle's body.
4

Door Hinge Bolts

M8 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Secure the door hinges to the vehicle's body.
5

Trunk Lid Hinge Bolts

M8 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Secure the trunk lid hinges to the vehicle's body.

Brakes

Torque specifications for Brakes

Brake Caliper System

1

Brake Caliper Bolts

M12 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
2

Brake Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
129 ft-lbs (175 N·m)

Brake Rotor and Drum System

1

Brake Disc/Drum Retaining Bolts

M10 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
2

Brake Rotor Mounting Bolts (if applicable)

M12 x 1.5
Torque Specification
1. 70 ft-lbs (95 N·m) 2. 80 ft-lbs (110 N·m)
Important Notes
Estimated torque values based on general industry standards.

Brake Pad and ABS System

1

Brake Pad Retaining Clips

M6 x 1.0
Torque Specification
1. 10 ft-lbs (14 N·m) 2. 15 ft-lbs (20 N·m)
Important Notes
Estimated torque values based on general industry standards.
2

ABS Sensor Mounting Bolts

M8 x 1.25
Torque Specification
1. 10 ft-lbs (14 N·m) 2. 15 ft-lbs (20 N·m)
Important Notes
Estimated torque values based on general industry standards.

Wheel and Hub System

1

Wheel Lug Nuts

M14 x 1.5
Torque Specification
100 ft-lbs (135 N·m)

Brake Master Cylinder System

1

Brake Master Cylinder Mounting Bolts

M10 x 1.25
Torque Specification
1. 18 ft-lbs (24 N·m) 2. 22 ft-lbs (30 N·m)
Important Notes
Estimated torque values based on general industry standards.

Drivetrain

Torque specifications for Drivetrain

Engine and Flywheel

1

Flywheel Bolts

M12 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Proper torque ensures the flywheel is properly seated and the engine's rotational energy is transferred to the transmission.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Proper torque ensures the pulley/balancer is properly seated and the engine's rotational energy is transferred to the serpentine belt.
3

Engine Block to Transmission Bellhousing Bolts

M10 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures the engine and transmission are properly aligned and supported.

Transmission

1

Transmission Mounting Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures the transmission is properly aligned and supported.
2

Transmission Oil Pan Bolts

M8 x 1.25
Torque Specification
106 in-lbs (12 N·m)
Important Notes
Proper torque ensures the oil pan is properly sealed and the transmission's lubrication system is maintained.
3

Transmission Crossmember Bolts

M14 x 1.5
Torque Specification
129 ft-lbs (175 N·m)
Important Notes
Proper torque ensures the transmission is properly supported and aligned.

Drivetrain

1

Drive Axle/Half Shaft Bolts

M14 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Proper torque ensures the axle/half shaft is properly seated and the drivetrain's rotational energy is transferred to the wheels.
2

CV Joint/Axle Nut

M18 x 1.5
Torque Specification
159 ft-lbs (215 N·m)
Important Notes
Proper torque ensures the CV joint is properly seated and the drivetrain's rotational energy is transferred to the wheels.
3

Propeller/Drive Shaft Bolts

M10 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Proper torque ensures the propeller/drive shaft is properly seated and the drivetrain's rotational energy is transferred to the wheels.
4

Differential Drain/Fill Plug

M12 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Proper torque ensures the plug is properly sealed and the differential's lubrication system is maintained.
5

Differential Cover Bolts

M10 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Proper torque ensures the differential cover is properly sealed and the differential's lubrication system is maintained.
6

Axle/Half Shaft Retaining Bolts

M14 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Proper torque ensures the axle/half shaft is properly seated and the drivetrain's rotational energy is transferred to the wheels.

Electrical

Torque specifications for Electrical

Alternator And Starter

1

Alternator Mounting Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2

Starter Motor Mounting Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)

Battery And Terminals

1

Battery Terminal Nuts

M8 x 1.25
Torque Specification
89 in-lbs (10 N·m)

Ignition And Fuel Systems

1

Ignition Coil Mounting Bolts

M10 x 1.5
Torque Specification
1. 10 ft-lbs (14 N·m) 2. 15 ft-lbs (20 N·m)
Important Notes
Estimated torque values. Consult manufacturer's recommendations for specific application.
2

Spark Plug Wire Retainer Bolts

M8 x 1.25
Torque Specification
1. 5 ft-lbs (7 N·m) 2. 10 ft-lbs (14 N·m)
Important Notes
Estimated torque values. Consult manufacturer's recommendations for specific application.
3

Fuel Pump Electrical Connector Bolts

M6 x 1.0
Torque Specification
1. 5 ft-lbs (7 N·m) 2. 10 ft-lbs (14 N·m)
Important Notes
Estimated torque values. Consult manufacturer's recommendations for specific application.
4

A/C Compressor Electrical Connector Bolts

M6 x 1.0
Torque Specification
1. 5 ft-lbs (7 N·m) 2. 10 ft-lbs (14 N·m)
Important Notes
Estimated torque values. Consult manufacturer's recommendations for specific application.

Emissions Sensors

Torque specifications for Emissions_sensors

Exhaust Manifold And Headers

1

Exhaust Manifold/Headers Bolts

M12 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Proper torque ensures a leak-free connection and prevents damage to the oxygen sensor and other emissions-related components.
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M12 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Proper torque ensures a leak-free connection and prevents damage to the oxygen sensor and other emissions-related components.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M12 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Proper torque ensures a leak-free connection and prevents damage to the oxygen sensor and other emissions-related components.

Oxygen Sensor

1

Oxygen Sensor Bolts

M10 x 1.25
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Estimated value. Proper torque ensures a leak-free connection and accurate sensor readings.

EGR Valve

1

EGR Valve Mounting Bolts

M10 x 1.25
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Estimated value. Proper torque ensures a leak-free connection and prevents damage to the EGR valve and other emissions-related components.
2

EGR Valve Pipe Fittings

M10 x 1.25
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Estimated value. Proper torque ensures a leak-free connection and prevents damage to the EGR valve and other emissions-related components.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold and Headers

1

Exhaust Manifold/Headers Bolts

M12 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
2

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.25
Torque Specification
23 ft-lbs (31 N·m)

Exhaust Pipe and Components

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M12 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
2

Catalytic Converter to Exhaust Pipe Bolts

M12 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
3

Muffler to Exhaust Pipe Bolts

M12 x 1.5
Torque Specification
26 ft-lbs (35 N·m)

Oxygen Sensor and Heat Shield

1

Oxygen Sensor Bolts

M8 x 1.25
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Estimated value. Consult manufacturer's recommendations or a repair manual for specific torque values.
2

Heat Shield Bolts

M6 x 1.0
Torque Specification
12.5 ft-lbs (16.9 N·m)
Important Notes
Estimated value. Consult manufacturer's recommendations or a repair manual for specific torque values.

Exhaust System Mounting

1

Exhaust System Mounting Bolts

M14 x 1.5
Torque Specification
25 ft-lbs (33.9 N·m)
Important Notes
Estimated value. Consult manufacturer's recommendations or a repair manual for specific torque values.

Fuel

Torque specifications for Fuel

Fuel Rail and Injector Subsystem

1

Fuel Rail Bolts

M8 x 1.25
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated bolt size. Torque value is critical for proper fuel rail mounting.
2

Fuel Injector Bolts

M8 x 1.25
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated bolt size. Torque value is critical for proper fuel injector mounting.

Fuel Pump and Filter Subsystem

1

Fuel Pump Mounting Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated bolt size. Torque value is critical for proper fuel pump mounting.
2

Fuel Filter Bolt/Nut

M12 x 1.75
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated bolt size. Torque value is critical for proper fuel filter mounting.

Fuel Tank and Ventilation Subsystem

1

Fuel Tank Strap Bolts

M12 x 1.75
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated bolt size. Torque value is critical for proper fuel tank strap mounting.
2

Fuel Filler Neck Bolts

M8 x 1.25
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated bolt size. Torque value is critical for proper fuel filler neck mounting.

Fuel Pressure Regulator and Electrical Connector Subsystem

1

Fuel Pressure Regulator Mounting Bolts

M8 x 1.25
Torque Specification
1. 10 ft-lbs (14 N·m) 2. 15 ft-lbs (20 N·m)
Important Notes
Estimated bolt size. Torque value range is critical for proper fuel pressure regulator mounting.
2

Fuel Injector Electrical Connector Bolts

M5 x 0.8
Torque Specification
1. 4.4 ft-lbs (0.6 N·m) 2. 8.8 ft-lbs (1.4 N·m)
Important Notes
Estimated bolt size. Torque value range is critical for proper fuel injector electrical connector mounting.
3

Fuel Pump Electrical Connector Bolts

M5 x 0.8
Torque Specification
1. 4.4 ft-lbs (0.6 N·m) 2. 8.8 ft-lbs (1.4 N·m)
Important Notes
Estimated bolt size. Torque value range is critical for proper fuel pump electrical connector mounting.

Hvac

Torque specifications for Hvac

Air Conditioning System

1

A/C Compressor Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Secure the compressor to the engine block.
2

A/C Line Fittings

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Connect the refrigerant lines to the compressor, condenser, and evaporator.
3

A/C Condenser Mounting Bolts

M12 x 1.75
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Secure the condenser to the radiator support or other structural components. Estimated torque value based on industry standards.
4

A/C Evaporator Mounting Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Secure the evaporator to the dashboard or other structural components. Estimated torque value based on industry standards.
5

A/C Refrigerant Line Bracket Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Secure the refrigerant lines to the engine compartment or other structural components. Estimated torque value based on industry standards.

Suspension

Torque specifications for Suspension

Strut and Shock Absorber Mounting

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
129 ft-lbs (175 N·m)
Important Notes
Incorrect torque can lead to uneven tire wear, reduced handling, and compromised safety.

Control Arm and Bushing Mounting

1

Control Arm Bolts

M14 x 1.5
Torque Specification
129 ft-lbs (175 N·m)
Important Notes
Insufficient torque can cause uneven tire wear, reduced handling, and increased risk of component failure.
2

Upper Control Arm Bushing Bolts

M10 x 1.25
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Estimated value. Incorrect torque can lead to uneven tire wear, reduced handling, and compromised safety.
3

Lower Control Arm Bushing Bolts

M10 x 1.25
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Estimated value. Insufficient torque can cause uneven tire wear, reduced handling, and increased risk of component failure.

Steering and Suspension Linkage

1

Ball Joint Nut

M16 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Incorrect torque can lead to premature wear, reduced handling, and compromised safety.
2

Tie Rod End Nut

M14 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Insufficient torque can cause uneven tire wear, reduced handling, and increased risk of component failure.
3

Sway Bar Link Nut

M12 x 1.25
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Incorrect torque can lead to reduced handling, uneven tire wear, and compromised safety.

Steering Gear and Rack Mounting

1

Steering Gear/Rack Bolts

M14 x 1.5
Torque Specification
129 ft-lbs (175 N·m)
Important Notes
Insufficient torque can cause uneven tire wear, reduced handling, and increased risk of component failure.

Stabilizer Bar Mounting

1

Stabilizer Bar Mounting Bolts

M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Incorrect torque can lead to reduced handling, uneven tire wear, and compromised safety.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What IS the proper torque specification for the cylinder head bolts on a 2008 Pontiac G8?

The torque specification for the cylinder head bolts on a 2008 Pontiac G8 IS 75 ft-lbs (102 Nm) in three stages: 25 ft-lbs (34 Nm), 50 ft-lbs (68 Nm), and 75 ft-lbs (102 Nm).

Q2

What type of torque wrench should be used for critical fasteners on a 2009 Pontiac G8?

A click-type torque wrench with a range that covers the specified torque values should be used for critical fasteners on a 2009 Pontiac G8. Ensure the torque wrench IS calibrated according to manufacturer's specifications.

Q3

What are the torque specifications for the rear axle pinion nut on a 2008-2009 Pontiac G8?

The torque specification for the rear axle pinion nut on a 2008-2009 Pontiac G8 IS 150 ft-lbs (203 Nm) plus an additional 90 degrees of rotation.

Q4

How often should torque be checked on critical components of a 2008 Pontiac G8?

Torque on critical components, such as lug nuts, suspension bolts, and engine head bolts, should be checked according to the manufacturer's recommended maintenance schedule, typically every 15,000-30,000 miles or annually.

Q5

What IS the recommended tightening sequence for the intake manifold bolts on a 2009 Pontiac G8?

The intake manifold bolts on a 2009 Pontiac G8 should be tightened in a star pattern, starting from the center and working outwards. Refer to the Pontiac service manual for specific torque values and tightening sequence.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Digital Torque Wrench (10-100 Nm)

Essential for tightening fasteners to precise torque specifications, preventing damage and ensuring proper assembly. This range IS suitable for many applications on the G8.

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

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Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
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About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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