Pontiac Vehicle Models Pontiac Bonneville 2000-2005
Pontiac Vehicle Models Pontiac Bonneville 2000-2005 Torque Specifications
Complete Pontiac Vehicle Models Pontiac Bonneville 2000-2005 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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3.8l Engine
Torque specifications for 3.8L Engine
3.8l Engine
Torque specifications for 3.8L Engine
Cylinder Head and Valve Train
1 Cylinder Head Bolts
M12 x 1.5
1
Cylinder Head Bolts
M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
2 Valve Cover Bolts
M8 x 1.25
2
Valve Cover Bolts
M8 x 1.25
Torque Specification
106 in-lbs (12 N·m)
3 Rocker Arms/Shafts Bolts
M10 x 1.5
3
Rocker Arms/Shafts Bolts
M10 x 1.5
Torque Specification
19 ft-lbs (26 N·m)
Engine Block and Main Bearings
1 Main Bearing Bolts
M14 x 2.0
1
Main Bearing Bolts
M14 x 2.0
Torque Specification
77 ft-lbs (105 N·m)
2 Engine Block to Transmission Mounting Bolts
M12 x 1.5
2
Engine Block to Transmission Mounting Bolts
M12 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated value based on industry standards.
Crankshaft and Connecting Rods
1 Connecting Rod Nuts
M12 x 1.5
1
Connecting Rod Nuts
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2 Crankshaft Pulley/Harmonic Balancer Bolt
M16 x 2.0
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
1
Timing Belt/Chain Tensioner Bolt
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2 Camshaft Sprocket Bolt
M12 x 1.5
2
Camshaft Sprocket Bolt
M12 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Exhaust System
1 Exhaust Manifold/Headers Bolts
M10 x 1.5
1
Exhaust Manifold/Headers Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Engine Accessories
1 Water Pump Bolts
M10 x 1.5
1
Water Pump Bolts
M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
2 Thermostat Housing Bolts
M8 x 1.25
2
Thermostat Housing Bolts
M8 x 1.25
Torque Specification
106 in-lbs (12 N·m)
3 Oil Pan Bolts
M10 x 1.5
3
Oil Pan Bolts
M10 x 1.5
Torque Specification
106 in-lbs (12 N·m)
Fuel System
1 Fuel Rail Bolts
M8 x 1.25
1
Fuel Rail Bolts
M8 x 1.25
Torque Specification
89 in-lbs (10 N·m)
Ignition System
1 Spark Plugs
M14 x 1.25
1
Spark Plugs
M14 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
EGR System
1 EGR Valve Bolts
M10 x 1.5
1
EGR Valve Bolts
M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
3.8l V6 Engine
Torque specifications for 3.8L-V6 Engine
3.8l V6 Engine
Torque specifications for 3.8L-V6 Engine
Cylinder Head and Valve Train
1 Cylinder Head Bolts
M12 x 1.5
1
Cylinder Head Bolts
M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
2 Valve Cover Bolts
M8 x 1.25
2
Valve Cover Bolts
M8 x 1.25
Torque Specification
106 in-lbs (12 N·m)
3 Rocker Arms/Shafts Bolts
M10 x 1.5
3
Rocker Arms/Shafts Bolts
M10 x 1.5
Torque Specification
19 ft-lbs (26 N·m)
Engine Block and Main Bearings
1 Main Bearing Bolts
M14 x 2.0
1
Main Bearing Bolts
M14 x 2.0
Torque Specification
77 ft-lbs (105 N·m)
2 Engine Block to Transmission Mounting Bolts
M12 x 1.5
2
Engine Block to Transmission Mounting Bolts
M12 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated value based on industry standards.
Crankshaft and Connecting Rods
1 Connecting Rod Nuts
M12 x 1.5
1
Connecting Rod Nuts
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2 Crankshaft Pulley/Harmonic Balancer Bolt
M16 x 2.0
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
1
Timing Belt/Chain Tensioner Bolt
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2 Camshaft Sprocket Bolt
M12 x 1.5
2
Camshaft Sprocket Bolt
M12 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Exhaust System
1 Exhaust Manifold/Headers Bolts
M10 x 1.5
1
Exhaust Manifold/Headers Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Engine Accessories
1 Water Pump Bolts
M10 x 1.5
1
Water Pump Bolts
M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
2 Thermostat Housing Bolts
M8 x 1.25
2
Thermostat Housing Bolts
M8 x 1.25
Torque Specification
106 in-lbs (12 N·m)
3 Oil Pan Bolts
M10 x 1.5
3
Oil Pan Bolts
M10 x 1.5
Torque Specification
106 in-lbs (12 N·m)
Fuel System
1 Fuel Rail Bolts
M8 x 1.25
1
Fuel Rail Bolts
M8 x 1.25
Torque Specification
89 in-lbs (10 N·m)
Ignition System
1 Spark Plugs
M14 x 1.25
1
Spark Plugs
M14 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
EGR System
1 EGR Valve Bolts
M10 x 1.5
1
EGR Valve Bolts
M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
4.6l Engine
Torque specifications for 4.6L Engine
4.6l Engine
Torque specifications for 4.6L Engine
Cylinder Head and Valve Train
1 Cylinder Head Bolts
M12 x 1.5
1
Cylinder Head Bolts
M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
2 Valve Cover Bolts
M8 x 1.25
2
Valve Cover Bolts
M8 x 1.25
Torque Specification
106 in-lbs (12 N·m)
3 Rocker Arms/Shafts Bolts
M10 x 1.5
3
Rocker Arms/Shafts Bolts
M10 x 1.5
Torque Specification
19 ft-lbs (26 N·m)
Engine Block and Main Bearings
1 Main Bearing Bolts
M14 x 2.0
1
Main Bearing Bolts
M14 x 2.0
Torque Specification
77 ft-lbs (105 N·m)
2 Engine Block to Transmission Mounting Bolts
M12 x 1.5
2
Engine Block to Transmission Mounting Bolts
M12 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated value based on industry standards.
3 Engine Block to Engine Mounting Bolts
M10 x 1.5
3
Engine Block to Engine Mounting Bolts
M10 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on industry standards.
Crankshaft and Connecting Rods
1 Connecting Rod Nuts
M12 x 1.5
1
Connecting Rod Nuts
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2 Crankshaft Pulley/Harmonic Balancer Bolt
M14 x 2.0
2
Crankshaft Pulley/Harmonic Balancer Bolt
M14 x 2.0
Torque Specification
74 ft-lbs (100 N·m)
Intake and Exhaust Manifolds
1 Intake Manifold to Engine Block Bolts
M10 x 1.5
1
Intake Manifold to Engine Block Bolts
M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on industry standards.
2 Exhaust Manifold to Engine Block Bolts
M10 x 1.5
2
Exhaust Manifold to Engine Block Bolts
M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on industry standards.
Timing and Accessory Components
1 Timing Belt/Chain Tensioner Bolt
M12 x 1.5
1
Timing Belt/Chain Tensioner Bolt
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2 Camshaft Sprocket Bolt
M10 x 1.5
2
Camshaft Sprocket Bolt
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Oil and Cooling Systems
1 Oil Pan Bolts
M8 x 1.25
1
Oil Pan Bolts
M8 x 1.25
Torque Specification
106 in-lbs (12 N·m)
2 Oil Filter Housing Bolt
M10 x 1.5
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
3
Oil Drain Plug Bolt
M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
4 Water Pump Bolts
M10 x 1.5
4
Water Pump Bolts
M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Ignition and Fuel Systems
1 Spark Plugs
M14 x 1.25
1
Spark Plugs
M14 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
2 Fuel Injector Bolts
M10 x 1.5
2
Fuel Injector Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
4.6l V8 Engine
Torque specifications for 4.6L-V8 Engine
4.6l V8 Engine
Torque specifications for 4.6L-V8 Engine
Cylinder Head and Valve Train
1 Cylinder Head Bolts
M12 x 1.5
1
Cylinder Head Bolts
M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
2 Valve Cover Bolts
M8 x 1.25
2
Valve Cover Bolts
M8 x 1.25
Torque Specification
106 in-lbs (12 N·m)
3 Rocker Arms/Shafts Bolts
M10 x 1.5
3
Rocker Arms/Shafts Bolts
M10 x 1.5
Torque Specification
19 ft-lbs (26 N·m)
Engine Block and Main Bearings
1 Main Bearing Bolts
M14 x 2.0
1
Main Bearing Bolts
M14 x 2.0
Torque Specification
77 ft-lbs (105 N·m)
2 Engine Block to Transmission Mounting Bolts
M12 x 1.5
2
Engine Block to Transmission Mounting Bolts
M12 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated value based on industry standards.
3 Engine Block to Engine Mounting Bolts
M10 x 1.5
3
Engine Block to Engine Mounting Bolts
M10 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on industry standards.
Crankshaft and Connecting Rods
1 Connecting Rod Nuts
M12 x 1.5
1
Connecting Rod Nuts
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2 Crankshaft Pulley/Harmonic Balancer Bolt
M14 x 2.0
2
Crankshaft Pulley/Harmonic Balancer Bolt
M14 x 2.0
Torque Specification
74 ft-lbs (100 N·m)
Intake and Exhaust Manifolds
1 Intake Manifold to Engine Block Bolts
M10 x 1.5
1
Intake Manifold to Engine Block Bolts
M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on industry standards.
2 Exhaust Manifold to Engine Block Bolts
M10 x 1.5
2
Exhaust Manifold to Engine Block Bolts
M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on industry standards.
Timing and Accessory Components
1 Timing Belt/Chain Tensioner Bolt
M12 x 1.5
1
Timing Belt/Chain Tensioner Bolt
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2 Camshaft Sprocket Bolt
M10 x 1.5
2
Camshaft Sprocket Bolt
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Oil and Cooling Systems
1 Oil Pan Bolts
M8 x 1.25
1
Oil Pan Bolts
M8 x 1.25
Torque Specification
106 in-lbs (12 N·m)
2 Oil Filter Housing Bolt
M10 x 1.5
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
3
Oil Drain Plug Bolt
M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
4 Water Pump Bolts
M10 x 1.5
4
Water Pump Bolts
M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Ignition and Fuel Systems
1 Spark Plugs
M14 x 1.25
1
Spark Plugs
M14 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
2 Fuel Injector Bolts
M10 x 1.5
2
Fuel Injector Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
4t65 Transmission
Torque specifications for 4t65 Transmission
4t65 Transmission
Torque specifications for 4t65 Transmission
Transmission Mounting
1 Transmission Mounting Bolts
M12 x 1.5
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 and crossmember.
Transmission Oil Pan
1 Transmission Oil Pan Bolts
M8 x 1.25
1
Transmission Oil Pan Bolts
M8 x 1.25
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
These bolts secure the oil pan to the transmission case.
Transmission Drain and Fill
1 Transmission Drain and Fill Plugs
M14 x 1.5
1
Transmission Drain and Fill Plugs
M14 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
These plugs are used for draining and filling the transmission fluid.
Bellhousing and Valve Body
1 Bellhousing Bolts
M14 x 1.5
1
Bellhousing Bolts
M14 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
These bolts secure the bellhousing to the engine block and transmission case. (Estimated value)
2 Valve Body Bolts
M10 x 1.25
2
Valve Body Bolts
M10 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
These bolts secure the valve body to the transmission case. (Estimated value)
Transmission Filter and Pan Gasket
1 Transmission Filter Bolts
M8 x 1.25
1
Transmission Filter Bolts
M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
These bolts secure the transmission filter to the transmission case. (Estimated value)
2 Pan Gasket Bolts
M8 x 1.25
2
Pan Gasket Bolts
M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
These bolts secure the pan gasket to the transmission case. (Estimated value)
Body
Torque specifications for Body
Body
Torque specifications for Body
Suspension and Steering
1 Strut/Shock Absorber Mounting Bolts
M14 x 1.5
1
Strut/Shock Absorber Mounting Bolts
M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2 Control Arm Bolts
M16 x 1.5
2
Control Arm Bolts
M16 x 1.5
Torque Specification
89 ft-lbs (121 N·m)
3 Steering Gear/Rack Bolts
M12 x 1.5
3
Steering Gear/Rack Bolts
M12 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Brake System
1 Brake Caliper Bolts
M10 x 1.5
1
Brake Caliper Bolts
M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
2 Brake Caliper Mounting Bracket Bolts
M12 x 1.5
2
Brake Caliper Mounting Bracket Bolts
M12 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Body and Trim
1 Hood Hinge Bolts
M8 x 1.25
1
Hood Hinge Bolts
M8 x 1.25
Torque Specification
1. 15 ft-lbs (20 N·m)
2. 20 ft-lbs (27 N·m)
Important Notes
Estimated torque value. Consult manufacturer or repair manual for specific value.
2 Trunk Lid Hinge Bolts
M8 x 1.25
2
Trunk Lid Hinge Bolts
M8 x 1.25
Torque Specification
1. 15 ft-lbs (20 N·m)
2. 20 ft-lbs (27 N·m)
Important Notes
Estimated torque value. Consult manufacturer or repair manual for specific value.
3 Door Hinge Bolts
M8 x 1.25
3
Door Hinge Bolts
M8 x 1.25
Torque Specification
1. 15 ft-lbs (20 N·m)
2. 20 ft-lbs (27 N·m)
Important Notes
Estimated torque value. Consult manufacturer or repair manual for specific value.
4 Bumper Mounting Bolts
M12 x 1.5
4
Bumper Mounting Bolts
M12 x 1.5
Torque Specification
1. 30 ft-lbs (40 N·m)
2. 40 ft-lbs (54 N·m)
Important Notes
Estimated torque value. Consult manufacturer or repair manual for specific value.
5 Fender Mounting Bolts
M8 x 1.25
5
Fender Mounting Bolts
M8 x 1.25
Torque Specification
1. 15 ft-lbs (20 N·m)
2. 20 ft-lbs (27 N·m)
Important Notes
Estimated torque value. Consult manufacturer or repair manual for specific value.
Brakes
Torque specifications for Brakes
Brakes
Torque specifications for Brakes
Brake Caliper Assembly
1 Brake Caliper Bolts
M12 x 1.5
1
Brake Caliper Bolts
M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
2 Brake Caliper Mounting Bracket Bolts
M14 x 1.5
2
Brake Caliper Mounting Bracket Bolts
M14 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Brake Rotor/Disc and Drum Assembly
1 Brake Disc/Drum Retaining Bolts
M10 x 1.25
1
Brake Disc/Drum Retaining Bolts
M10 x 1.25
Torque Specification
100 ft-lbs (136 N·m)
Wheel and Hub Assembly
1 Wheel Lug Nuts
M12 x 1.5
1
Wheel Lug Nuts
M12 x 1.5
Torque Specification
100 ft-lbs (136 N·m)
Brake Master Cylinder and Booster Assembly
1 Brake Master Cylinder Mounting Bolts
M10 x 1.25
1
Brake Master Cylinder Mounting Bolts
M10 x 1.25
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Estimated value, actual torque may vary depending on the specific application and manufacturer's recommendations.
2 Brake Booster Mounting Bolts
M10 x 1.25
2
Brake Booster Mounting Bolts
M10 x 1.25
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Estimated value, actual torque may vary depending on the specific application and manufacturer's recommendations.
ABS Module and Brake Line Assembly
1 ABS Module Mounting Bolts
M8 x 1.25
1
ABS Module Mounting Bolts
M8 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated value, actual torque may vary depending on the specific application and manufacturer's recommendations.
2 Brake Line Fittings
M10 x 1.25
2
Brake Line Fittings
M10 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated value, actual torque may vary depending on the specific application and manufacturer's recommendations.
Drivetrain
Torque specifications for Drivetrain
Drivetrain
Torque specifications for Drivetrain
Engine Block and Crankshaft
1 Main Bearing Bolts
M14 x 1.5
1
Main Bearing Bolts
M14 x 1.5
Torque Specification
77 ft-lbs (105 N·m)
Important Notes
Proper torque ensures the bearings are seated correctly and the crankshaft is properly aligned.
2 Crankshaft Pulley/Harmonic Balancer Bolt
M16 x 1.5
2
Crankshaft Pulley/Harmonic Balancer Bolt
M16 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Proper torque ensures the pulley or harmonic balancer is securely attached.
Connecting Rods and Pistons
1 Connecting Rod Nuts
M12 x 1.25
1
Connecting Rod Nuts
M12 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures the connecting rods are securely attached to the crankshaft.
Flywheel and Clutch
1 Flywheel Bolts
M14 x 1.5
1
Flywheel Bolts
M14 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Proper torque ensures the flywheel is securely attached to the crankshaft.
Transmission and Driveshaft
1 Transmission Mounting Bolts
M12 x 1.25
1
Transmission Mounting Bolts
M12 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures the transmission is securely attached to the engine or transmission crossmember.
2 Propeller/Drive Shaft Bolts
M16 x 1.5
2
Propeller/Drive Shaft Bolts
M16 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Proper torque ensures the propeller shaft is securely attached to the transmission or differential.
Differential and Axles
1 Differential Drain/Fill Plug
M12 x 1.25
1
Differential Drain/Fill Plug
M12 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque ensures the plug is securely attached to the differential.
2 CV Joint/Axle Nut
M20 x 1.5
2
CV Joint/Axle Nut
M20 x 1.5
Torque Specification
185 ft-lbs (250 N·m)
Important Notes
Proper torque ensures the CV joint is securely attached to the drive axle or half shaft.
3 Drive Axle/Half Shaft Bolts
M16 x 1.5
3
Drive Axle/Half Shaft Bolts
M16 x 1.5
Torque Specification
118 ft-lbs (160 N·m)
Important Notes
Proper torque ensures the drive axles or half shafts are securely attached to the transmission or differential.
Engine Block to Transmission Bellhousing
1 Engine Block to Transmission Bellhousing Bolts
M14 x 1.5
1
Engine Block to Transmission Bellhousing Bolts
M14 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Proper torque ensures the engine block is securely attached to the transmission bellhousing.
Transmission Crossmember
1 Transmission Crossmember Bolts
M12 x 1.25
1
Transmission Crossmember Bolts
M12 x 1.25
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value. Proper torque ensures the transmission crossmember is securely attached to the frame.
Differential Cover
1 Differential Cover Bolts
M10 x 1.25
1
Differential Cover Bolts
M10 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value. Proper torque ensures the differential cover is securely attached to the differential housing.
Axle Shaft Retaining Bolts
1 Axle Shaft Retaining Bolts
M12 x 1.25
1
Axle Shaft Retaining Bolts
M12 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value. Proper torque ensures the axle shafts are securely attached to the differential or transmission.
Electrical
Torque specifications for Electrical
Electrical
Torque specifications for Electrical
Alternator And Starter Motor
1 Alternator Mounting Bolts
M12 x 1.5
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
2
Starter Motor Mounting Bolts
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Battery Terminals
1 Battery Terminal Nuts
M8 x 1.25
1
Battery Terminal Nuts
M8 x 1.25
Torque Specification
71 in-lbs (8 N·m)
Ignition Coil And Spark Plug Wires
1 Ignition Coil Mounting Bolts
M10 x 1.5
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 based on general industry standards.
2 Spark Plug Wire Retainer Bolts
M6 x 1.0
2
Spark Plug Wire Retainer 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 based on general industry standards.
Fuel Pump Electrical Connector
1 Fuel Pump Electrical Connector Bolts
M6 x 1.0
1
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 based on general industry standards.
Emissions Sensors
Torque specifications for Emissions_sensors
Emissions Sensors
Torque specifications for Emissions_sensors
Emissions Sensors
1 EGR Valve Bolts
M10 x 1.5
1
EGR Valve Bolts
M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secure the EGR valve in place to ensure proper exhaust gas recirculation.
2 Fuel Injector Bolts
M12 x 1.75
2
Fuel Injector Bolts
M12 x 1.75
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Secure the fuel injectors in place to ensure proper fuel delivery.
3 Fuel Injector Rail Bolts
M8 x 1.25
3
Fuel Injector Rail Bolts
M8 x 1.25
Torque Specification
89 in-lbs (10 N·m)
Important Notes
Secure the fuel injector rail in place to ensure proper fuel delivery.
4 Oxygen Sensor Bolts
M18 x 1.5
4
Oxygen Sensor Bolts
M18 x 1.5
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Estimated value based on industry standards. Secure the oxygen sensor in place to ensure accurate readings.
5 Mass Airflow Sensor Bolts
M6 x 1.0
5
Mass Airflow Sensor Bolts
M6 x 1.0
Torque Specification
12.5 ft-lbs (16.9 N·m)
Important Notes
Estimated value based on industry standards. Secure the mass airflow sensor in place to ensure accurate airflow readings.
6 Throttle Position Sensor Bolts
M5 x 0.8
6
Throttle Position Sensor Bolts
M5 x 0.8
Torque Specification
10 ft-lbs (13.6 N·m)
Important Notes
Estimated value based on industry standards. Secure the throttle position sensor in place to ensure accurate throttle position readings.
Exhaust
Torque specifications for Exhaust
Exhaust
Torque specifications for Exhaust
Exhaust Manifold Headers
1 Exhaust Manifold/Headers to Engine Block Bolts
M10 x 1.25
1
Exhaust Manifold/Headers to Engine Block Bolts
M10 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2 Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
2
Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
Exhaust Pipe Connections
1 Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.25
1
Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure gasket is properly seated before tightening.
2 Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.25
2
Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure gasket is properly seated before tightening.
3 Muffler to Exhaust Pipe Bolts
M10 x 1.25
3
Muffler to Exhaust Pipe Bolts
M10 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure gasket is properly seated before tightening.
4 Downpipe to Catalytic Converter Bolts
M12 x 1.5
4
Downpipe to Catalytic Converter Bolts
M12 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Estimated value based on similar components. Ensure gasket is properly seated before tightening.
Exhaust Accessories
1 Oxygen Sensor Bolts
M8 x 1.25
1
Oxygen Sensor Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value based on similar components. Avoid overtightening to prevent sensor damage.
2 Exhaust System Heat Shield Bolts
M6 x 1.0
2
Exhaust System Heat Shield Bolts
M6 x 1.0
Torque Specification
13 ft-lbs (17 N·m)
Important Notes
Estimated value based on similar components. Ensure heat shield is properly aligned before tightening.
3 Exhaust System Hanger Bolts
M10 x 1.25
3
Exhaust System Hanger Bolts
M10 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Estimated value based on similar components. Ensure hanger is properly aligned before tightening.
Fuel
Torque specifications for Fuel
Fuel
Torque specifications for Fuel
Fuel Delivery 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 of the fuel rail before tightening.
2 Fuel Injector Bolts
M8 x 1.25
2
Fuel Injector Bolts
M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure injectors are properly seated before tightening.
3 Fuel Pump Mounting Bolts
M6 x 1.0
3
Fuel Pump Mounting Bolts
M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the fuel pump is properly aligned with the fuel tank or engine block.
Fuel Storage System
1 Fuel Tank Strap Bolts
M8 x 1.25
1
Fuel Tank Strap Bolts
M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the fuel tank is properly supported before tightening.
2 Fuel Filler Neck Bolts
M6 x 1.0
2
Fuel Filler Neck Bolts
M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the filler neck is properly aligned with the fuel tank.
Fuel Filtration System
1 Fuel Filter Bolt/Nut
M8 x 1.25
1
Fuel Filter Bolt/Nut
M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the fuel filter is properly seated in the housing.
Fuel Pressure Regulation
1 Fuel Pressure Regulator Bolt
M6 x 1.0
1
Fuel Pressure Regulator Bolt
M6 x 1.0
Torque Specification
17.5 ft-lbs (23.5 N·m)
Important Notes
Estimated value based on similar M6 bolts. Ensure proper alignment of the regulator.
Fuel Line Connections
1 Fuel Line Fittings (O-ring/Banjo)
M6 x 1.0
1
Fuel Line Fittings (O-ring/Banjo)
M6 x 1.0
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated value based on similar M6 fittings. Ensure proper sealing of O-rings.
Hvac
Torque specifications for Hvac
Hvac
Torque specifications for Hvac
Air Conditioning System Components
1 A/C Compressor Mounting Bolts
M12 x 1.75
1
A/C Compressor Mounting Bolts
M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Secure the compressor to the engine block, ensuring proper alignment and preventing vibration.
2 A/C Condenser Mounting Bolts
M10 x 1.5
2
A/C Condenser Mounting Bolts
M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value, secure the condenser to the radiator support or frame, ensuring proper airflow and heat transfer.
3 A/C Evaporator Mounting Bolts
M8 x 1.25
3
A/C Evaporator Mounting Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value, secure the evaporator to the dashboard or HVAC housing, ensuring proper airflow and heat transfer.
A/C Line Fittings and Connections
1 A/C Line Fittings
M12 x 1.75
1
A/C Line Fittings
M12 x 1.75
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure a leak-free connection and prevent refrigerant loss.
2 A/C Orifice Tube Fittings
M8 x 1.25
2
A/C Orifice Tube Fittings
M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value, regulate refrigerant flow and ensure a leak-free connection.
A/C Refrigerant Line Clamps
1 A/C Refrigerant Line Clamp Bolts
M6 x 1
1
A/C Refrigerant Line Clamp Bolts
M6 x 1
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value, prevent refrigerant leaks and ensure proper system operation.
Suspension
Torque specifications for Suspension
Suspension
Torque specifications for Suspension
Front Suspension
1 Strut/Shock Absorber Mounting Bolts
M14 x 1.5
1
Strut/Shock Absorber Mounting Bolts
M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2 Control Arm Bolts
M16 x 1.5
2
Control Arm Bolts
M16 x 1.5
Torque Specification
89 ft-lbs (121 N·m)
3 Ball Joint Nut
M12 x 1.5
3
Ball Joint Nut
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
4 Tie Rod End Nut
M12 x 1.5
4
Tie Rod End Nut
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
5 Sway Bar Link Nut
M12 x 1.5
5
Sway Bar Link Nut
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Upper Control Arm
1 Upper Control Arm Bushing Bolts
M10 x 1.25
1
Upper Control Arm Bushing Bolts
M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value based on industry standards for similar applications.
Lower Control Arm
1 Lower Control Arm Bolts
M14 x 1.5
1
Lower Control Arm Bolts
M14 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Estimated value based on industry standards for similar applications.
Steering Gear/Rack
1 Steering Gear/Rack Mounting Bolts
M16 x 1.5
1
Steering Gear/Rack Mounting Bolts
M16 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Estimated value based on industry standards for similar applications.
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 lug nuts on a 2000-2005 Pontiac Bonneville?
Q1
What IS the recommended torque specification for lug nuts on a 2000-2005 Pontiac Bonneville?
The recommended torque specification for lug nuts on a 2000-2005 Pontiac Bonneville IS 100 ft-lbs (135 Nm).
Q2 What IS the proper sequence for tightening lug nuts on a 2000-2005 Pontiac Bonneville?
Q2
What IS the proper sequence for tightening lug nuts on a 2000-2005 Pontiac Bonneville?
Follow a star pattern to tighten the lug nuts in a crisscross pattern, starting with the lug nut at the top of the wheel and alternating between the left and right sides.
Q3 What type of torque wrench IS recommended for tightening lug nuts on a 2000-2005 Pontiac Bonneville?
Q3
What type of torque wrench IS recommended for tightening lug nuts on a 2000-2005 Pontiac Bonneville?
It IS recommended to use a high-quality click-type torque wrench that IS calibrated regularly.
Q4 Can I use a standard wrench to tighten lug nuts on a 2000-2005 Pontiac Bonneville?
Q4
Can I use a standard wrench to tighten lug nuts on a 2000-2005 Pontiac Bonneville?
While it IS possible to use a standard wrench, a torque wrench IS highly recommended for accurate tightening.
Q5 What are the signs of over-tightened or under-tightened lug nuts on a 2000-2005 Pontiac Bonneville?
Q5
What are the signs of over-tightened or under-tightened lug nuts on a 2000-2005 Pontiac Bonneville?
Over-tightening can cause damage to the threads or lugs, while under-tightening can lead to loose wheels. Look for stripped threads, deformed lugs, or excessive play in the wheels.
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
Torque Wrench
Essential for tightening fasteners to exact torque specifications and preventing damage.
- Adjustable torque range
- Click or digital display
- Reversible ratcheting mechanism
Torque Angle Meter
Measures the angle of rotation applied to a fastener after it has reached a specified torque value. This IS important for some torque-to-yield bolts.
- Digital or analog display
- Measures angle of rotation in degrees
- Compact and easy to use
Service Procedures
Bolt Torque Specifications
Comprehensive guide to tightening torques for various components on the 2000-2005 Pontiac Bonneville.
- Consult the manufacturer's service manual or reliable online sources for specific torque values.
- Use the appropriate torque wrench and ensure it IS calibrated.
- Clean and lubricate threads before tightening.
- Tighten bolts gradually, following the specified torque sequence.
- Use a torque angle meter for torque-to-yield bolts.
- Double-check torque values after initial tightening.
Technical Service Bulletins
Engine Cylinder Head Bolt Tightening Procedure
2004-06-15Outlines the correct procedure for tightening cylinder head bolts on the 3.8L V6 engine.
2000-2005 Bonneville with 3.8L V6
Resolution: Provides detailed instructions and torque specifications.
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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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- If you're unsure about any procedure, consult a qualified professional mechanic.
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