Cadillac Vehicle Models DeVille 2000-2005 Torque Specifications
Cadillac Vehicle Models DeVille 2000-2005

Cadillac Vehicle Models DeVille 2000-2005 Torque Specifications

Complete Cadillac Vehicle Models DeVille 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

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

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

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

Used for gaskets and cover plates

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

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

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

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

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

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

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

Prevention:

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

Reusing TTY Bolts

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

Prevention:

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

Dry vs. Lubricated

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

Prevention:

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

Recommended Tools

Torque Wrench (1/4" Drive)

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

Torque Wrench (3/8" Drive)

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

Torque Wrench (1/2" Drive)

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

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

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

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

4.6l Engine

Torque specifications for 4.6L Engine

Cylinder Head

1

Cylinder Head Bolts

M11 x 1.5
Torque Specification
1. 18 ft-lbs (25 N·m) 2. 90°
Important Notes
Requires a specific torque sequence and angle tightening. Consult service manual for sequence. Initial torque is followed by an additional 90 degree turn.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque bolts evenly to prevent leaks.
3

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure rocker arms are properly seated during installation. Torque to spec.

Engine Block

1

Main Bearing Bolts

M12 x 1.75
Torque Specification
1. 15 ft-lbs (20 N·m) 2. 75°
Important Notes
Requires specific torque sequence and angle tightening. Consult service manual. Initial torque is followed by an additional 75 degree turn.
2

Oil Pan Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque bolts evenly to prevent oil leaks. Convert inch-lbs to ft-lbs before applying torque.
3

Oil Drain Plug Bolt

M14 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Use a new crush washer for proper sealing.
4

Oil Filter Housing Bolt

N/A
Torque Specification
N/A
Important Notes
Hand tight + 1/4 turn. No torque spec.
5

Water Pump Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure a proper seal. Convert inch-lbs to ft-lbs before applying torque.

Rotating Assembly

1

Connecting Rod Nuts

M9 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Tighten connecting rod nuts evenly. Consult service manual for torque sequence.
2

Flywheel Bolts

M10 x 1.5
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Ensure proper flywheel alignment before torquing bolts.
3

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 2.0
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Use the correct tightening procedure. Torque to spec.

Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure proper tensioner installation and operation before torquing.
2

Camshaft Sprocket Bolt

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper camshaft sprocket alignment before torquing bolts. Torque to spec.

Intake System

1

Intake Manifold Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Torque bolts in a criss-cross pattern to prevent vacuum leaks.
2

Intake Manifold Plenum Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Torque bolts in a criss-cross pattern to prevent vacuum leaks.
3

Throttle Body Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure proper alignment before tightening. Convert inch-lbs to ft-lbs before applying torque.
4

EGR Valve Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten bolts to spec.
5

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the thermostat is properly positioned. Torque to spec.

Exhaust System

1

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Torque bolts evenly to ensure a proper seal.

Fuel System

1

Fuel Rail Bolts

M6 x 1.0
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Torque bolts evenly to maintain proper fuel rail pressure.
2

Fuel Injector Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure proper seating of the injectors. Convert inch-lbs to ft-lbs before applying torque.

Electrical System

1

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Torque bolts to spec. Do not over-tighten.
2

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Torque bolts to spec. Do not over-tighten.
3

Knock Sensor Bolt

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Torque the knock sensor bolt to spec. Do not over-tighten.
4

Ignition Coil Bolt

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque to spec. Do not over-tighten.
5

Spark Plugs

M14 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Torque spark plugs to spec for proper heat transfer and sealing.

Accessory Drive

1

Water Pump Pulley Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten water pump pulley bolts to spec.
2

Serpentine/Accessory Drive Belt Tensioner Bolt

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure proper alignment before torquing.
3

Drive Belt Idler Pulley Bolt

M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure proper alignment before torquing.

4t80 Transmission

Torque specifications for 4t80 Transmission

Transmission Mounting

1

Transmission Bellhousing Bolts to Engine Block

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
These bolts connect the transmission bellhousing directly to the engine block. High-grade bolts are recommended.
2

Transmission Mount Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
These bolts secure the transmission mount to the chassis. Confirm proper alignment before tightening.

Transmission Case

1

Transmission Case Bolts (Main Case Halves)

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
These bolts hold the main halves of the transmission case together. Use a cross pattern tightening sequence.
2

Valve Body Bolts

M6 x 1.0
Torque Specification
8.3 ft-lbs (11.3 N·m)
Important Notes
These bolts secure the valve body to the transmission case. Proper torque is essential for correct valve body operation. This is an approximate conversion from in-lbs.
3

Internal Filter Bolt

M6 x 1.0
Torque Specification
6.7 ft-lbs (9 N·m)
Important Notes
This bolt secures the internal transmission filter. Ensure the filter is seated correctly. This is an approximate conversion from in-lbs.

Transmission Pan

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
8.1 ft-lbs (11 N·m)
Important Notes
These bolts hold the transmission oil pan to the transmission case. Use a cross-tightening sequence. This is an approximate conversion from in-lbs.
2

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
These plugs are used to drain and fill transmission fluid. Ensure the sealing washers are in good condition.

External Components

1

Pressure Switch/Sensor Bolts

M5 x 0.8
Torque Specification
6.7 ft-lbs (9 N·m)
Important Notes
These secure the transmission pressure switches or sensors. Do not overtighten. This is an approximate conversion from in-lbs.
2

Torque Converter to Flexplate Bolts

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
These bolts attach the torque converter to the engine's flexplate. Ensure proper engagement before tightening. Use new bolts.
3

Drive Axle/Half Shaft Bolts

M10 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
These bolts connect the CV shafts to the transmission's output flanges or stub shafts. Ensure proper seating and thread engagement.

Body

Torque specifications for Body

Fuel System

1

Fuel Tank Strap Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure straps are correctly positioned before tightening. Apply torque evenly to both sides.
2

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Be careful not to overtighten as this could damage the filler neck or body panel.

Hood Mounting

1

Hood Hinge Bolts to Hood

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value. Ensure proper alignment of hood before tightening.
2

Hood Hinge Bolts to Body

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Estimated value. Confirm hood alignment and smooth operation.

Fender Mounting

1

Fender Bolts (Upper)

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Low torque to prevent damage to body panels. Convert 89 in-lbs to ft-lbs.
2

Fender Bolts (Lower)

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Low torque to prevent damage to body panels. Convert 89 in-lbs to ft-lbs.

Bumper Cover Mounting

1

Bumper Cover Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Low torque to prevent cracking of the plastic bumper. Convert 89 in-lbs to ft-lbs.

Door Mounting

1

Door Hinge Bolts to Door

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Estimated value. Ensure smooth door operation after tightening.
2

Door Hinge Bolts to Body

M8 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Estimated value. Ensure door closes properly after tightening.
3

Door Latch/Striker Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value. Verify proper door latch engagement.

Interior Mounting

1

Seat Mounting Bolts

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Critical for safety, ensure proper torque is achieved.
2

Dashboard/Instrument Panel Mounting Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value. Prevents rattles and ensures proper instrument panel alignment.
3

Interior Trim Panel Screws

Trim Screw - various sizes
Torque Specification
N/A
Important Notes
Hand tight only. Do not over tighten and strip the plastic or threads

Body Mounting

1

Body Mount Bolts

M12 x 1.75
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Estimated value. Ensure proper body alignment and stability.

Lighting Mounting

1

Tail Light Mounting Screws/Bolts

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Low torque to prevent cracking of the lens or plastic housing. Convert 89 in-lbs to ft-lbs.
2

Headlight Mounting Screws/Bolts

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Low torque to prevent cracking of the lens or plastic housing. Convert 89 in-lbs to ft-lbs.
3

Grille Mounting Screws/Bolts

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Low torque to prevent cracking of plastic. Convert 89 in-lbs to ft-lbs.

Brakes

Torque specifications for Brakes

Brake Calipers

1

Brake Caliper Bolts

M12 x 1.75
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Secures the caliper to the mounting bracket. Ensure even tightening.
2

Brake Line Fitting at Caliper

M10 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Connects the brake line to the caliper. Use a flare nut wrench to avoid rounding. Estimated value.
3

Brake Bleeder Screw

M8 x 1.25
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Used for bleeding air from the brake system. Do not over-tighten. Estimated value.

Caliper Brackets

1

Brake Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Attaches the caliper bracket to the steering knuckle. Ensure proper alignment. May be Torque to Yield (TTY) bolts, and require replacement after use.

Brake Rotors

1

Brake Disc/Drum Retaining Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Secures the rotor to the hub. These bolts do not bear braking load. They are primarily for assembly and alignment.

Master Cylinder And Booster

1

Brake Master Cylinder Mounting Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the master cylinder to the booster. Estimated value.
2

Power Brake Booster Mounting Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the booster to the firewall. Estimated value.

Abs Module

1

Anti-lock Brake System (ABS) Module Mounting Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Secures the ABS module. Estimated value.

Brake Lines And Hoses

1

Brake Hose Bracket Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Secures brake hose brackets to the chassis. Estimated value.

Wheels

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
100 ft-lbs (136 N·m)
Important Notes
Fastens wheel to the hub/rotor assembly. Ensure a star pattern is used.

Drivetrain

Torque specifications for Drivetrain

Engine Flywheel

1

Flywheel/Flexplate Bolts

M10 x 1.25
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Tighten in a star pattern in multiple passes to ensure even clamping pressure. It is recommended to use new bolts.

Transmission Mounting

1

Transmission Housing Bolts

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the transmission is properly aligned before tightening. Bolts are typically grade 8 or higher.
2

Transmission Support Bracket Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
These bolts attach the transmission support brackets to the vehicle frame. Ensure proper alignment.
3

Transmission Mount Bolts

M12 x 1.75
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
These bolts secure the transmission mounts. Ensure the mounts are correctly installed.

Transmission Service

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
8.08 ft-lbs (11 N·m)
Important Notes
Tighten in a cross pattern to prevent warping the pan. Use a new gasket or sealant per factory recommendations.
2

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Use a new sealing washer or O-ring. Do not over-tighten to prevent damage to the threads or sealing surface.

Torque Converter

1

Torque Converter Bolts

M8 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Use new bolts. Tighten in a star pattern to ensure even clamping pressure on the flexplate.

Drive Axles

1

Drive Axle/Half Shaft Bolts (Transmission/Differential)

M10 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Use new bolts if recommended by the manufacturer. Ensure the drive axle is seated properly to the transmission before tightening.
2

Inner CV Joint Bolts (Transaxle Side)

M8 x 1.25
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Ensure the CV joint is properly aligned before tightening. These are typically smaller diameter bolts than the outer axle bolts.
3

CV Joint/Axle Nut (Wheel Hub Side)

M24 x 1.5
Torque Specification
181 ft-lbs (245 N·m)
Important Notes
This is a high-torque, critical fastener. It is important to follow the correct tightening procedure. May require staking or a new nut.

Driveshaft

1

Propeller/Drive Shaft Bolts

M10 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure the driveshaft is properly aligned. Tighten bolts evenly to prevent vibration.
2

Drive Shaft Center Support Bearing Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
These bolts secure the driveshaft center support bearing. Ensure the bearing is aligned correctly.

Differential

1

Differential Carrier Bolts (Housing to Chassis)

M12 x 1.75
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
These bolts attach the differential housing to the vehicle chassis. Tighten evenly to prevent vibrations.
2

Differential Drain/Fill Plugs

M18 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Use a new sealing washer or O-ring. Do not over-tighten to prevent damage to the threads.

Electrical

Torque specifications for Electrical

Ignition System

1

Ignition Coil Mounting Bolt

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure the coil is seated properly before tightening. Over-tightening can damage the coil or threads.
2

Spark Plug

M14 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Apply anti-seize to the spark plug threads before installation. Over-tightening can cause damage to the spark plug or cylinder head.

Starting Charging System

1

Starter Motor Mounting Bolt

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the starter is aligned properly before tightening. These bolts also ground the starter, so proper torque is vital.
2

Alternator Mounting Bolt

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure proper alignment and belt tension before tightening. These bolts also ground the alternator, so proper torque is vital.

Battery Cables

1

Battery Terminal Nut

M8 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Do not over-tighten as this can damage the battery terminal. Ensure the terminals are clean before connecting.

Control Modules

1

Engine Control Module (ECM)/ Powertrain Control Module (PCM) Mounting Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
This is an estimated value. Ensure proper grounding of the module before tightening the bolts. Over-tightening can damage the module.
2

Body Control Module (BCM) Mounting Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
This is an estimated value. Ensure the module is aligned properly before tightening. Over-tightening can damage the module.

Grounding Points

1

Ground Strap/Wire Mounting Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
This is an estimated value. Ensure contact surfaces are clean for good electrical connection. Over-tightening can damage the bolt or the ground wire/strap.

Power Distribution

1

Fuse Box/Block Mounting Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
This is an estimated value. Ensure proper grounding of the fuse box before tightening the bolts. Over-tightening can damage the fuse box.

Lighting

1

Headlight/Taillight Mounting Bolt

M5 x 0.8
Torque Specification
4 ft-lbs (5 N·m)
Important Notes
This is an estimated value. Be careful not to over-tighten as these are often small bolts and can be easily broken. Proper grounding should be verified.

Emissions Sensors

Torque specifications for Emissions_sensors

Egr System

1

EGR Valve Mounting Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure mating surfaces are clean before installation. Apply even pressure while tightening.

Exhaust Manifold

1

Exhaust Manifold to Cylinder Head Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten bolts in a cross pattern to ensure even pressure. Check for leaks after installation.
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use new gaskets for proper sealing. Check for leaks after installation.
3

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use new gaskets for proper sealing. Check for leaks after installation.
4

Muffler to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use new gaskets for proper sealing. Check for leaks after installation.

Oxygen Sensor

1

Oxygen Sensor

M18 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Apply anti-seize compound to sensor threads. Ensure the sensor is fully threaded before tightening. Do not over-tighten.

Intake System

1

Mass Air Flow (MAF) Sensor Mounting Bolts

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not over-tighten, as these bolts often thread into a plastic housing. Use a properly calibrated torque wrench.
2

Intake Air Temperature (IAT) Sensor Mounting Bolt

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Do not over-tighten, as these bolts often thread into a plastic housing. Use a properly calibrated torque wrench.
3

Throttle Position Sensor (TPS) Mounting Bolts

M4 x 0.7
Torque Specification
3.7 ft-lbs (5 N·m)
Important Notes
Ensure proper alignment of the sensor. Do not over-tighten, as the bolts thread into a plastic housing. Use a calibrated torque wrench.

Engine Sensors

1

Camshaft Position (CMP) Sensor Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper alignment. Do not over-tighten, as the sensor housing is often plastic. Use a calibrated torque wrench.
2

Crankshaft Position (CKP) Sensor Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure proper alignment of the sensor. Do not over-tighten, as the sensor housing is often plastic. Use a calibrated torque wrench.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold

1

Exhaust Manifold to Cylinder Head Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Torque bolts in a criss-cross pattern. Ensure a new gasket is used for each installation.

Exhaust Pipe Connections

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure a new gasket is used. Torque in a criss-cross pattern.
2

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use new gaskets at this flange. Torque evenly in a criss-cross sequence.
3

Muffler to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment. Use new gaskets or seals if applicable. Torque evenly.
4

Exhaust Pipe Flange Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
These connect intermediate pipe sections. Use new gaskets when applicable. Estimated value.

Exhaust Sensors

1

Oxygen Sensor Mounting Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Not all sensors are bolted, some are thread-in only. If bolted, ensure proper sealing. Estimated value.

Exhaust Clamps

1

Exhaust Clamp Bolt

M8 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
These bolts compress exhaust clamps. Estimated value based on common clamp bolt size.

Fuel

Torque specifications for Fuel

Fuel Rail

1

Fuel Rail Mounting Bolts

M8 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Ensure proper alignment of the fuel rail before tightening. Tighten bolts evenly to prevent leaks.
2

Fuel Pressure Regulator Mounting Bolts/Screws

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
These are typically smaller screws or bolts. Ensure the regulator is seated properly before tightening. Value is estimated based on similar size bolts.

Fuel Injectors

1

Fuel Injector Mounting Bolts/Screws

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure injectors are properly seated in the fuel rail and intake manifold before tightening. Use new O-rings or seals.

Fuel Pump

1

Fuel Pump Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten bolts evenly to ensure a proper seal against the fuel tank or chassis. Do not overtighten.
2

Fuel Tank Sending Unit Lock Ring

Lock Ring
Torque Specification
1. 15 ft-lbs (20 N·m) 2. 35 ft-lbs (47 N·m)
Important Notes
Use a proper lock ring tool for installation. Torque value range given, check the vehicle specific manual for your specific model. Begin with the lower value and confirm seal before applying additional torque.

Fuel Lines

1

Fuel Line Fitting

Varies by Fitting Size
Torque Specification
1. 15 ft-lbs (20 N·m) 2. 25 ft-lbs (34 N·m)
Important Notes
Torque value range given, use the correct wrench for your specific fitting. The torque required will vary based on size and material of fitting. Consult a torque specification chart. Begin with the lower torque value and confirm seal before additional torque is applied.
2

Fuel Filter Mounting Bolt/Nut

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secure the fuel filter using the specified torque. Ensure proper connection to the fuel lines before tightening.
3

Fuel Filler Neck Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the fuel filler neck is aligned correctly with the fuel tank and body before tightening. Tighten bolts evenly.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Use a criss-cross pattern when tightening to ensure even pressure. Final torque should be completed after all bolts are hand-tight.

Ac Line Fittings

1

A/C Line Fittings

Varying sizes, typically M16 x 1.5 for larger connections and M12 x 1.25 for smaller connections. Check specifications for the exact fitting.
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Do not overtighten. Overtightening can damage O-rings and cause leaks. Inspect O-rings for damage prior to installation.

Ac Condenser

1

A/C Condenser Mounting Bolts/Nuts (Small)

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
These are typically smaller bolts and fasteners. Apply torque evenly and avoid overtightening.
2

A/C Condenser Mounting Bolts/Nuts (Larger)

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
These are typically larger bolts used to mount the condenser to the core support. Apply torque evenly and avoid overtightening.

Ac Evaporator

1

A/C Evaporator Housing Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Apply torque evenly. Over-tightening can damage the plastic housing. Use a criss-cross pattern for even sealing.

Hvac Actuators

1

HVAC Blend Door Actuator Mounting Screws

M4 x 0.7
Torque Specification
2.25 ft-lbs (3 N·m)
Important Notes
These small screws attach the actuators to the plastic HVAC case. Do not overtighten.
2

HVAC Mode Door Actuator Mounting Screws

M4 x 0.7
Torque Specification
2.25 ft-lbs (3 N·m)
Important Notes
These small screws attach the actuators to the plastic HVAC case. Do not overtighten.
3

HVAC Recirculate Actuator Mounting Screws

M4 x 0.7
Torque Specification
2.25 ft-lbs (3 N·m)
Important Notes
These small screws attach the actuators to the plastic HVAC case. Do not overtighten.

Heater Core

1

Heater Core Inlet and Outlet Pipe Fittings

Varying sizes, typically M14 x 1.5 or M16 x 1.5. Check specifications for the exact fitting.
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
These fittings may be threaded. Avoid overtightening to prevent damage to the heater core or fittings.

Blower Motor

1

Blower Motor Mounting Screws

M4 x 0.7
Torque Specification
2.25 ft-lbs (3 N·m)
Important Notes
These screws often attach the blower motor to a plastic housing. Do not overtighten.

Suspension

Torque specifications for Suspension

Strut Assembly

1

Strut/Shock Absorber Lower Mounting Bolts

M12 x 1.75
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
These bolts secure the lower part of the strut or shock absorber to the control arm or vehicle frame. Ensure bolts are clean and threads are in good condition. Use a criss-cross pattern when tightening if multiple bolts are used.
2

Strut Mount/Top Mount Nuts

M10 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
These nuts secure the upper part of the strut to the vehicle's chassis. Torque specifications can vary, refer to manufacturer's specifications for the exact torque if available. Estimated Value.
3

Steering Knuckle to Strut Bolts

M14 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
These bolts connect the steering knuckle to the strut. Ensure correct bolt length and thread engagement. Estimated Value.

Control Arms

1

Control Arm Mounting Bolts

M14 x 2.0
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
These bolts secure the control arms to the frame or chassis. Ensure the vehicle is at ride height if specified in the manual.
2

Lower Ball Joint Mounting Bolts

M12 x 1.75
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
These bolts secure the ball joint to the control arm or steering knuckle if not press-fit. Estimated Value.

Steering

1

Ball Joint Nut

M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
This nut secures the ball joint to the steering knuckle or control arm. Make sure the nut is properly threaded before torquing.
2

Tie Rod End Nut

M12 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
This nut secures the tie rod end to the steering knuckle. Ensure proper thread engagement and alignment.

Sway Bar

1

Sway Bar Link Nut

M10 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
This nut secures the sway bar link to the control arm or strut. Check condition of bushings and hardware.
2

Sway Bar Bushing Bracket Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
These bolts secure the sway bar bushing bracket to the vehicle frame or subframe. Estimated Value.

Wheel Mounting

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
100 ft-lbs (136 N·m)
Important Notes
These nuts secure the wheels to the hubs. It is critical to follow a star pattern tightening sequence to ensure even pressure on the wheel.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

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

Stripped Fasteners

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

Overtightened Components

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

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

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

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

Torque Verification

Verify the torque applied to the fasteners

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

Thread Assessment

Assess the condition of the threads

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

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

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

Maintenance Tips

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

Tool Care

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

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What IS the recommended torque specification for the front wheel lug nuts on a 2000-2005 Cadillac DeVille?

100 ft-lbs (135 Nm) using a torque wrench.

Q2

What are the torque specifications for the engine head bolts on a 2000-2005 Cadillac DeVille with a Northstar engine?

Cylinder head bolt torque specifications are as follows: Step 1: 22 ft-lbs (30 Nm) Step 2: 62 ft-lbs (84 Nm) Step 3: 90 degrees Step 4: 90 degrees

Q3

What IS the torque specification for the oil drain plug on a 2000-2005 Cadillac DeVille?

18 ft-lbs (24 Nm)

Q4

What torque wrench should I use for tightening critical fasteners on my Cadillac DeVille?

Use a high-quality torque wrench with a range that covers the required torque specifications. Ensure the torque wrench IS properly calibrated before use.

Q5

What are the torque specifications for the intake manifold bolts on a 2002 Cadillac DeVille with a 4.6L engine?

Intake manifold bolts should be torqued to 11 ft-lbs (15 Nm). Use a torque wrench and tighten the bolts evenly in a crisscross pattern.

Q6

Can I use a regular wrench to tighten bolts instead of a torque wrench?

No, using a regular wrench IS not recommended. A torque wrench provides precise and controlled tightening, ensuring the bolts are torqued to the specified value.

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 deville.

  • 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

Engine Bolt Torque Specifications

Procedure outlining torque specifications for various bolts and nuts on the engine of the deville.

  • Cylinder head bolts: 90 Nm (66 ft-lb)
  • Intake manifold bolts: 35 Nm (26 ft-lb)
  • Exhaust manifold bolts: 50 Nm (37 ft-lb)
  • Crankshaft pulley bolt: 150 Nm (111 ft-lb)
  • Oil pan bolts: 25 Nm (18 ft-lb)
View full procedure

Suspension Bolt Torque Specifications

Procedure outlining torque specifications for various bolts and nuts on the suspension of the deville.

  • Upper control arm bolts: 85 Nm (63 ft-lb)
  • Lower control arm bolts: 125 Nm (92 ft-lb)
  • Tie rod ends: 50 Nm (37 ft-lb)
  • Strut bolts: 75 Nm (55 ft-lb)
  • Sway bar links: 25 Nm (18 ft-lb)
View full procedure

Brake Bolt Torque Specifications

Procedure outlining torque specifications for various bolts and nuts on the brakes of the deville.

  • Caliper bolts: 120 Nm (89 ft-lb)
  • Rotor bolts: 75 Nm (55 ft-lb)
  • Master cylinder bolts: 25 Nm (18 ft-lb)
  • Brake line fittings: 15 Nm (11 ft-lb)
  • ABS module bolts: 30 Nm (22 ft-lb)
View full procedure
Technical Service Bulletins

TSB: Transmission Bolt Torque Correction

2003-05-15

Bulletin issued by Cadillac to correct incorrect torque specifications in the service manual for transmission bolts.

2000-2005 deville

Resolution: Revised torque specifications for transmission bolts: 55 Nm (41 ft-lb)

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

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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

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