Buick Vehicle Models Regal 2018-present Torque Specifications
Buick Vehicle Models Regal 2018-present

Buick Vehicle Models Regal 2018-present Torque Specifications

Complete Buick Vehicle Models Regal 2018-present 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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Torque Calculator

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2.0l Engine

Torque specifications for 2.0L Engine

Cylinder Head

1

Cylinder Head Bolts (Long)

M11 x 1.5
Torque Specification
1. 22 ft-lbs (30 N·m) 2. 70° 3. 70° 4. 45°
Important Notes
Critical for sealing the cylinder head to the block. Torque-to-yield procedure. Use a spiral sequence, starting from the center outwards. Always replace these bolts.
2

Cylinder Head Bolts (Short)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the front cover of the cylinder head and smaller components. Estimated value.
3

Camshaft Bearing Cap Bolts

M6 x 1.0
Torque Specification
1. 7.4 ft-lbs (10 N·m) 2. 30°
Important Notes
Secures the camshaft bearing caps to the cylinder head. Proper sequence and torque are critical. Estimated value.

Engine Block

1

Main Bearing Cap Bolts

M12 x 1.75
Torque Specification
1. 18 ft-lbs (25 N·m) 2. 85° 3. 45°
Important Notes
Secures the crankshaft within the engine block. Torque-to-yield bolts. Always replace when removed. Estimated value.
2

Connecting Rod Cap Bolts

M9 x 1.25
Torque Specification
1. 15 ft-lbs (20 N·m) 2. 75° 3. 30°
Important Notes
Secures the connecting rod to the crankshaft. Torque-to-yield bolts, always replace when removed. Estimated value.

Intake Exhaust

1

Intake Manifold Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the intake manifold to the cylinder head. Estimated value.
2

Exhaust Manifold Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Attaches the exhaust manifold to the cylinder head. Estimated value.
3

Exhaust Manifold Studs (to Cylinder Head)

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Secures the exhaust manifold onto the cylinder head. These are pre-installed studs and don't need to be torqued on replacement, however, make sure they are torqued to spec during re-installation. Estimated value.
4

Exhaust Downpipe Bolts (Flange)

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Attaches the exhaust downpipe to the exhaust manifold. Estimated value.

Timing System

1

Camshaft Sprocket Bolt

M10 x 1.5
Torque Specification
1. 55 ft-lbs (75 N·m) 2. 45°
Important Notes
Secures the camshaft sprockets to the camshafts. Estimated value.
2

Crankshaft Pulley Bolt

M14 x 1.5
Torque Specification
1. 110 ft-lbs (150 N·m) 2. 60° 3. 15°
Important Notes
Attaches the crankshaft pulley to the crankshaft. Always replace this bolt when removed. Estimated value.
3

Timing Chain Tensioner Bolt

M6 x 1.0
Torque Specification
5.8 ft-lbs (8 N·m)
Important Notes
Holds the timing chain tensioner in place. Estimated value.
4

Timing Chain Guide Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Bolts hold the timing chain guides in place. Estimated value.

Oil System

1

Oil Pan Bolts (Smaller)

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the oil pan to the engine block. Estimated value.
2

Oil Pan Bolts (Larger)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the oil pan to the engine block. Estimated value.
3

Oil Drain Plug

M14 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Seals the oil drain port. Estimated value.
4

Oil Pump Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the oil pump to the engine block. Estimated value.
5

Oil Filter Housing Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Attaches the oil filter housing to the engine. Estimated value.

Cooling System

1

Water Pump Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the water pump to the engine. Estimated value.
2

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the thermostat housing to the engine. Estimated value.

Miscellaneous

1

Starter Motor Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Secures the starter motor to the engine. Estimated value.
2

Alternator Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Secures the alternator to the engine. Estimated value.
3

Engine Mount Bolts

M12 x 1.75
Torque Specification
1. 55 ft-lbs (75 N·m) 2. 90°
Important Notes
Secure the engine to the chassis through motor mounts. Torque-to-yield. Always replace these bolts. Estimated value.

9t65 Transmission

Torque specifications for 9t65 Transmission

Transmission Case

1

Case Housing Bolts (small)

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
These bolts hold the main transmission case halves together. Ensure proper torque sequence for even tightening.
2

Case Housing Bolts (large)

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Larger case bolts for additional structural rigidity of the case.
3

Side Cover Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value based on similar GM 9-speed transmissions.

Valve Body

1

Valve Body Mounting Bolts

M6 x 1.0
Torque Specification
7.41 ft-lbs (10 N·m)
Important Notes
Valve body bolts. Must use a criss-cross pattern starting from the center outwards. Over-tightening can warp the valve body.

Tcm

1

TCM Mounting Bolts

M6 x 1.0
Torque Specification
5.91 ft-lbs (8 N·m)
Important Notes
Estimated value based on similar GM 6 & 8 speed transmissions.

Oil Pan

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
7.41 ft-lbs (10 N·m)
Important Notes
Secures the oil pan to the transmission case. Must use a criss-cross tightening sequence. Over-tightening can damage pan and gasket.

Filter

1

Transmission Filter Mounting Bolts

M6 x 1.0
Torque Specification
5.91 ft-lbs (8 N·m)
Important Notes
Estimated value based on similar GM 6 & 8 speed transmissions.

Cooler Lines

1

Transmission Cooler Line Fittings

M18 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Secures fluid lines to the transmission case. Use a flare nut wrench. Ensure proper torque to prevent leaks.

Torque Converter

1

Torque Converter to Flexplate Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
These are critical bolts that connect the torque converter to the flexplate. They MUST be torqued in a star pattern. Some may be torque-to-yield and require replacement each time they are loosened.

Range Sensor

1

Range Sensor Mounting Bolts

M5 x 0.8
Torque Specification
5.16 ft-lbs (7 N·m)
Important Notes
Estimated value based on similar GM 6 & 8 speed transmissions.

Transmission Mount

1

Transmission Mount Bolts (Transmission Side)

M10 x 1.5
Torque Specification
41 ft-lbs (55 N·m)
Important Notes
Attaches the mount to the transmission case, important to prevent excessive movement.
2

Transmission Mount Bolts (Chassis Side)

M12 x 1.75
Torque Specification
66 ft-lbs (90 N·m)
Important Notes
Attaches the mount to the vehicle chassis, important to prevent excessive movement.

Fill Drain Plugs

1

Fill Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Seals the fill port, proper torque is essential to prevent leaks.
2

Drain Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Seals the drain port, typically uses a new crush washer and proper torque is essential to prevent leaks.

Speed Sensor

1

Speed Sensor Bolts

M6 x 1.0
Torque Specification
5.91 ft-lbs (8 N·m)
Important Notes
Estimated value based on similar GM 6 & 8 speed transmissions.

Body

Torque specifications for Body

Front End Exterior

1

Headlamp Assembly Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensures correct headlamp alignment and prevents vibration. Use a calibrated torque wrench. Do not over tighten. Clean threads before installation.
2

Front Bumper Cover Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value, some retainers may be plastic. Do not over-tighten. Clean threads before installation.
3

Fender Mounting Bolts (Upper)

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Proper torque is crucial for panel alignment and rigidity. Use a calibrated torque wrench. Clean threads before installation.
4

Fender Mounting Bolts (Lower)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque is crucial for panel alignment and rigidity. Use a calibrated torque wrench. Clean threads before installation.
5

Hood Hinge Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Critical for hood alignment and safety. Use a calibrated torque wrench. Clean threads before installation.
6

Hood Latch Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensures the hood latches securely, which is safety-critical. Use a calibrated torque wrench. Clean threads before installation.

Doors And Components

1

Door Hinge Bolts (Body Side)

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Critical fastener for door alignment, function and safety. Use a calibrated torque wrench. Clean threads before installation.
2

Door Hinge Bolts (Door Side)

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Critical fastener for door alignment, function and safety. Use a calibrated torque wrench. Clean threads before installation.
3

Door Latch Striker Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Important for proper door closure and latching. Use a calibrated torque wrench. Clean threads before installation.
4

Door Lock Actuator Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Prevents vibration and ensures reliable operation. Use a calibrated torque wrench. Clean threads before installation.
5

Door Handle Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensures handle is securely attached. Use a calibrated torque wrench. Clean threads before installation.
6

Door Interior Panel Screws/Fasteners

N/A
Torque Specification
0.5 ft-lbs (0.7 N·m)
Important Notes
Estimated value, use hand-tight + 1/4 turn. These are often plastic fasteners which may break if overtightened.

Rear End Trunk Liftgate

1

Rear Bumper Cover Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value, some are plastic retainers. Do not over-tighten. Clean threads before installation.
2

Tail Lamp Assembly Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Prevents vibration and ensures correct sealing. Use a calibrated torque wrench. Clean threads before installation.
3

Trunk/Liftgate Hinge Bolts (Body Side)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Crucial for correct alignment and function. Use a calibrated torque wrench. Clean threads before installation.
4

Trunk/Liftgate Hinge Bolts (Trunk/Liftgate Side)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Crucial for correct alignment and function. Use a calibrated torque wrench. Clean threads before installation.
5

Trunk/Liftgate Latch Striker Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque is critical for secure latching. Use a calibrated torque wrench. Clean threads before installation.
6

Rear Spoiler/Wing Mounting Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque is crucial for secure mounting and aerodynamics. Use a calibrated torque wrench. Clean threads before installation.

Interior Miscellaneous

1

Seat Mounting Bolts

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Critical for passenger safety, always use new bolts. Use a calibrated torque wrench. Clean threads before installation.
2

Seat Belt Mounting Bolts

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Extremely critical for passenger safety, always use new bolts. Use a calibrated torque wrench. Clean threads before installation.
3

Dashboard/Instrument Panel Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Prevents rattles and ensures component stability. Use a calibrated torque wrench. Clean threads before installation.
4

Center Console Mounting Bolts/Screws

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value, use a calibrated torque wrench. Clean threads before installation.

Brakes

Torque specifications for Brakes

Front Brakes

1

Brake Caliper Guide Pin Bolts (Front)

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secures the caliper to the bracket, allowing it to float. Crucial for even braking and pad wear. Source: Estimated based on similar GM vehicles and industry standards.
2

Brake Caliper Bracket Bolts (Front)

M12 x 1.75
Torque Specification
125 ft-lbs (170 N·m)
Important Notes
Attaches the caliper bracket to the steering knuckle. High-stress fasteners. Source: Estimated based on similar GM vehicles and industry standards.
3

Brake Rotor Retaining Screw (Front)

M5 x 0.8
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Holds the rotor in place during assembly. Do not over-tighten. Source: Estimated based on similar applications and small screw size.
4

Brake Hose to Caliper Banjo Bolt (Front)

M10 x 1.0
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Connects the brake hose to the caliper, ensuring a leak-free seal. Source: Industry standard for banjo bolts of this size.
5

ABS Wheel Speed Sensor Bolt (Front)

M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Secures the wheel speed sensor to the steering knuckle. Source: Estimated based on bolt size and function.

Rear Brakes

1

Brake Caliper Guide Pin Bolts (Rear)

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secures the caliper to the bracket. Crucial for even braking and pad wear. Source: Estimated based on similar GM vehicles and industry standards.
2

Brake Caliper Bracket Bolts (Rear)

M12 x 1.75
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Attaches the caliper bracket to the rear knuckle or trailing arm. High-stress fasteners. Source: Estimated based on similar GM vehicles and industry standards.
3

Rear Brake Rotor Retaining Screw

M5 x 0.8
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Holds the rotor in place during assembly. Do not over-tighten. Source: Estimated based on similar applications and small screw size.
4

Brake Hose to Caliper Banjo Bolt (Rear)

M10 x 1.0
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Connects the brake hose to the caliper, ensuring a leak-free seal. Source: Industry standard for banjo bolts of this size.
5

Parking Brake Cable Bracket Bolt (Rear)

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Secures the parking brake cable bracket. Source: Estimated based on similar brackets and bolt size.
6

ABS Wheel Speed Sensor Bolt (Rear)

M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Secures the wheel speed sensor. Source: Estimated based on bolt size and function.

General Brake System

1

Brake Line Fittings (Hard Lines)

Varies, typically M10 x 1.0 or M12 x 1.0
Torque Specification
13.5 ft-lbs (18 N·m)
Important Notes
Connects hard brake lines. Use a line wrench. Source: Industry standard for brake line fittings of these sizes. Estimated average value, use lower range for smaller fittings.
2

Brake Master Cylinder Mounting Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Secures the master cylinder to the booster or firewall. Source: Industry standard/Similar GM models (estimated).
3

Brake Booster Mounting Nuts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Secures the brake booster to the firewall. Source: Industry standard/Similar GM models (estimated).

Drivetrain

Torque specifications for Drivetrain

Transmission

1

Transmission Mounting Bolts (Engine Side)

M12 x 1.75
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Secures the transmission to the engine block. Proper torque ensures alignment and prevents vibrations. Estimated value.
2

Transmission Mount Bolts (Subframe Side)

M12 x 1.75
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
Secures transmission mounts to the subframe. Proper torque plus angle prevents movement. Estimated value.
3

Transmission Pan Bolts

M6 x 1.0
Torque Specification
7.5 ft-lbs (10 N·m)
Important Notes
Secures the transmission pan to the transmission case. Use a star pattern to evenly tighten. Estimated value.
4

Transmission Fill Plug

M22 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Secures the transmission fill plug. Prevents fluid leakage. Estimated value.
5

Transmission Drain Plug

M18 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Secures the transmission drain plug. Prevents fluid leakage. Estimated value.
6

Transmission Fluid Cooler Line Fittings (Transmission Side)

M16 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Secures the transmission fluid cooler lines to the transmission. Proper torque ensures a leak-free seal. Estimated value.
7

Torque Converter Bolts (Flywheel/Flexplate)

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Secures the torque converter to the flywheel/flexplate. Use a star pattern to evenly tighten. Estimated value.

Driveshaft Axles

1

Driveshaft Center Support Bearing Bolts (if applicable)

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Secures the driveshaft center support bearing. Estimated value.
2

Front Axle Nut (Hub)

M24 x 1.5
Torque Specification
155 ft-lbs (210 N·m)
Important Notes
Secures the front axle to the wheel hub. Always replace this nut after removal. Estimated value.
3

Rear Axle Nut (Hub)

M24 x 1.5
Torque Specification
155 ft-lbs (210 N·m)
Important Notes
Secures the rear axle to the wheel hub. Always replace this nut after removal. Estimated value.
4

Axle CV Joint Bolts (Transmission Side)

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Fastens the CV joint to the transaxle flange. Use a star pattern to evenly tighten. Estimated value.
5

Axle CV Joint Bolts (Wheel Hub Side)

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Fastens the CV joint to the wheel hub. Use a star pattern to evenly tighten. Estimated value.

Differential

1

Differential Mounting Bolts

M14 x 2.0
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Secures the differential to the chassis or subframe. Estimated value.
2

Differential Housing Bolts (Cover Bolts)

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Secures the differential cover. Use a star pattern to evenly tighten. Estimated value.
3

Differential Fill Plug

M20 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Secures the differential fill plug. Prevents fluid leakage. Estimated value.
4

Differential Drain Plug

M20 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Secures the differential drain plug. Prevents fluid leakage. Estimated value.

Transfer Case

1

Transfer Case Mounting Bolts

M12 x 1.75
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Secures the transfer case to the transmission. Estimated value.
2

Transfer Case Fill Plug

M20 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Secures the transfer case fill plug. Prevents fluid leakage. Estimated value.
3

Transfer Case Drain Plug

M20 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Secures the transfer case drain plug. Prevents fluid leakage. Estimated value.

Electrical

Torque specifications for Electrical

Battery System

1

Battery Terminal Clamps

M8 (estimated)
Torque Specification
9.17 ft-lbs (12.4 N·m)
Important Notes
Estimated value based on similar General Motors battery terminal specifications. Secures battery cable terminals to the battery posts for proper electrical contact. Loose terminals cause starting issues, and corroded connections. Ensures proper power to the car's electrical system.
2

Battery Hold-Down Bolts

M8 (estimated)
Torque Specification
11 ft-lbs (14.9 N·m)
Important Notes
Estimated value based on industry standards. Secures the battery to the battery tray. Prevents battery from moving during operation, preventing shorts and potential damage. Loose battery can cause a short, damage the battery or the electrical system.

Starting Charging System

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Value based on similar GM specifications for M10 starter motor bolts. Secure the starter motor to the engine block. Proper torque is vital for alignment and engagement with the flywheel. Critical for reliable starting. Loose bolts could cause starter to break or jam, not making contact with the flywheel.
2

Alternator Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Value based on similar GM specifications for M8 alternator bolts. Secure the alternator to the engine block or bracket. Proper torque ensures proper tension on the belt and electrical ground. Loose alternator can cause a belt failure and electrical charging system malfunction.

Grounding System

1

Ground Strap Connection Bolts (Body/Chassis to Engine/Battery/Frame)

M6 x 1.0
Torque Specification
6.67 ft-lbs (9 N·m)
Important Notes
Estimated value based on industry standards. Essential for proper electrical grounding of all electrical components. Poor ground connections cause many electrical system problems. Ensures proper current flow and reduces electrical noise.

Control Modules

1

Engine Control Module (ECM) Mounting Bolts

M6 x 1.0
Torque Specification
5.83 ft-lbs (8 N·m)
Important Notes
Estimated value based on similar models. Secures the ECM to its mounting point on the vehicle. Proper torque prevents vibration damage to the sensitive electronics and ensures good electrical contact. Too tight can damage the module, too loose can cause problems with connection and damage to the system
2

Transmission Control Module (TCM) Mounting Bolts

M6 x 1.0
Torque Specification
5.83 ft-lbs (8 N·m)
Important Notes
Estimated value based on similar models. Secure the TCM to the transmission or its mounting point. Ensures proper operation of the electronic transmission control system. Too tight can damage the module, too loose can cause problems with connection and damage to the system
3

Body Control Module (BCM) Mounting Bolts

M6 x 1.0
Torque Specification
5.83 ft-lbs (8 N·m)
Important Notes
Estimated value based on similar models. Secures the BCM within the vehicle. Proper torque ensures no vibration-induced damage and proper connections. Too tight can damage the module, too loose can cause problems with connection and damage to the system
4

ABS Module Mounting Bolts

M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Estimated value based on General Motors ABS module mounting bolt standard. Secures the Anti-lock Braking System module to the vehicle. Important for safe braking and anti-skid operation. Too tight can damage the module, too loose can cause problems with connection and damage to the system

Lighting System

1

Headlight Assembly Mounting Bolts

M6 x 1.0
Torque Specification
5.17 ft-lbs (7 N·m)
Important Notes
Estimated value based on similar models. Secures headlight housings to the vehicle's body or frame. Proper torque prevents vibration and ensures proper light aiming. Too tight can cause damage to the housing, too loose and it will vibrate or not seat properly
2

Tail Light Assembly Mounting Bolts

M6 x 1.0
Torque Specification
5.17 ft-lbs (7 N·m)
Important Notes
Estimated value based on similar models. Secures tail light housings to the vehicle. Prevents light from vibrating, or falling off. Also provides a secure waterproof seal. Too tight can cause damage to the housing, too loose and it will vibrate or not seat properly

Electrical Distribution

1

Fuse Box Mounting Bolts

M6 x 1.0
Torque Specification
5.83 ft-lbs (8 N·m)
Important Notes
Estimated value, industry standard for electrical components. Secure the fuse box to the vehicle body. This helps to prevent movement or damage from vibration.
2

Relay Mounting Bolts/Screws

M4 (estimated)
Torque Specification
2.92 ft-lbs (4 N·m)
Important Notes
Estimated value based on industry standard for small electrical components. These screws secure relays to their mounting brackets. Over-tightening could damage the plastic housing.

Power Accessories

1

Power Window Motor Mounting Bolts

M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar models. Secures the power window motors inside the door panel.
2

Power Door Lock Actuator Mounting Bolts

M6 x 1.0
Torque Specification
7.42 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar models. Secure the door lock actuators inside the door panel. Ensures safe and reliable locking system operation.

Wiper System

1

Wiper Motor Mounting Bolts

M6 x 1.0
Torque Specification
5.83 ft-lbs (8 N·m)
Important Notes
Estimated value based on similar models. Secures the wiper motor to the cowl or body structure. Essential for proper and reliable wiper operation, safety in inclement weather

Interior Components

1

Interior Lighting Fixture Mounting Screws

M3-M5 (Varies)
Torque Specification
1.67 ft-lbs (2.26 N·m)
Important Notes
Estimated value based on industry standard for small fasteners. Varies based on screw size (20-45 in-lbs / 2-5 N·m). Secures interior lights in place, prevents rattle and ensures proper connection.
2

Steering Column Module Bolts

M6 x 1.0
Torque Specification
6.67 ft-lbs (9 N·m)
Important Notes
Estimated value, based on similar module mounting. Secures the steering column module which contains various electrical sensors and controls, safety-related. Over-tightening can damage module, too loose and it will rattle or misfunction.
3

Radio/Infotainment Unit Mounting Bolts

M5 x 0.8
Torque Specification
5.17 ft-lbs (7 N·m)
Important Notes
Estimated value based on similar models. Secures the head unit in the dashboard. Prevents vibration and potential damage to connections.

Emissions Sensors

Torque specifications for Emissions_sensors

Oxygen Sensors

1

Pre-Catalyst Oxygen Sensor Mounting Bolt

M18 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Apply anti-seize to threads before installation. Ensure sensor is properly seated before tightening.
2

Post-Catalyst Oxygen Sensor Mounting Bolt

M18 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Apply anti-seize to threads before installation. Ensure sensor is properly seated before tightening.

Mass Air Flow Sensor

1

Mass Air Flow (MAF) Sensor Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
These are typically small bolts. Do not over-tighten. Estimated based on similar GM vehicle MAF sensor specs.

Exhaust Gas Recirculation

1

EGR Valve Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated, similar GM EGR Valve mounting specs. Ensure bolts are tightened evenly.
2

EGR Pipe Flange Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Estimated, similar GM exhaust pipe mounting spec. Ensure a proper seal between the pipe and mating surface.
3

EGR Temperature Sensor Mounting Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated, small sensor housing bolt, common GM specification. Do not over-tighten.

Evaporative Emissions

1

EVAP Purge Valve Mounting Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated, similar GM EVAP purge valve mounting specs. Do not over-tighten the bolt as it can damage the plastic valve housing.
2

EVAP Canister Mounting Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated, similar GM EVAP canister mounting specs. Ensure canister is securely mounted.

Fuel Tank Pressure Sensor

1

Fuel Tank Pressure (FTP) Sensor Mounting Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated, similar GM fuel sensor spec. Do not over-tighten, as it can damage sensor housing.

Intake Manifold

1

Intake Manifold Mounting Bolts

M8 x 1.25
Torque Specification
1. 18 ft-lbs (25 N·m) 2. 90°
Important Notes
Always consult service manual for the specific engine code. These are torque-to-yield (TTY) bolts. Replace bolts anytime they are removed. Torque sequence is critical - consult specific vehicle service manual. This is an estimated specification.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold

1

Exhaust Manifold to Cylinder Head Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Torque in a criss-cross pattern starting from the center. Estimated value based on similar GM 2.0L turbo engines.
2

Exhaust Manifold Studs (if applicable)

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque to seat the studs before manifold installation. Estimated value based on industry standards for M8 studs.
3

Exhaust Manifold Nuts (attaching manifold to studs)

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Use a criss-cross pattern to evenly distribute torque. Estimated value based on industry standards.
4

Exhaust Manifold to Downpipe/Catalytic Converter Flange Bolts

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value based on industry standards for M10 bolts in exhaust systems. Ensure flange faces are clean.

Downpipe

1

Downpipe to Catalytic Converter Flange Bolts

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value based on industry standards for M10 bolts in exhaust systems. Ensure flange faces are clean.
2

Catalytic Converter to Mid-pipe Flange Bolts

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value based on industry standards for M10 bolts in exhaust systems. Ensure flange faces are clean.

Mid Pipe And Muffler

1

Mid-pipe to Muffler Flange Bolts

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value based on industry standards for M10 bolts in exhaust systems. Ensure flange faces are clean.
2

Muffler Hanger Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on industry standards for M8 bolts in undercarriage components. Do not overtighten to prevent damage to rubber hangers.

Clamps And Sensors

1

Exhaust Pipe Clamp Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on industry standards for M8 exhaust clamp bolts. Avoid over-tightening to prevent pipe damage.
2

Oxygen Sensor (O2 Sensor) into Exhaust Pipe

M18 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Estimated value based on industry standard for oxygen sensor installation. Use anti-seize compound on the sensor threads.
3

Heat Shield Mounting Bolts

M6 x 1.0
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
Estimated value based on industry standards for M6 bolts in heat shield applications. Avoid over-tightening to prevent damage and rattling.

Fuel

Torque specifications for Fuel

Fuel Tank

1

Fuel Pump Module Retaining Bolts

M6 x 1.0
Torque Specification
0.74 ft-lbs (10 N·m)
Important Notes
Estimated value. Ensure even tightening to prevent leaks or damage. Use a cross tightening pattern
2

Fuel Tank Strap Bolts

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Verify the correct bolt size, this is a common size. Ensure even tension to avoid tank shifting.
3

Fuel Tank Filler Neck Bolts (to body)

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value. Ensure the filler neck is properly aligned before tightening. Verify bolt size.

Fuel Delivery

1

Fuel Rail Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Tighten bolts in a cross pattern for even seating.
2

Fuel Injector Retaining Bolts/Screws

M6 x 1.0
Torque Specification
0.88 ft-lbs (12 N·m)
Important Notes
Estimated value. Avoid over-tightening to prevent damage to plastic injector bodies. Ensure bolts are not cross-threaded.
3

High-Pressure Fuel Line Connection to Fuel Rail

M14 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Use a backup wrench to prevent line twisting. Ensure threads are not damaged. This is a high pressure fitting.
4

High-Pressure Fuel Line Connection to High-Pressure Pump

M14 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Use a backup wrench to prevent line twisting. Check for proper thread engagement. Ensure the threads are not damaged.
5

Fuel Pressure Sensor

M18 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value, use a proper size wrench to avoid damage. Ensure the seal is correctly seated.
6

High-Pressure Fuel Pump Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value. Tighten bolts evenly to ensure proper alignment of the pump.

Evaporative System

1

Fuel Vapor Canister Mounting Bolts

M6 x 1.0
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
Estimated value. Avoid over-tightening. Ensure canister is not under any stress.
2

Evaporative Emission (EVAP) Purge Valve Mounting

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated value, ensure valve is oriented correctly for hoses to properly connect. Avoid overtightening.

Fuel Filter

1

Fuel Filter Bracket Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value. Ensure proper bolt size. Check for proper bracket alignment.

Electrical

1

Fuel Pump Electrical Connector Retaining Screw

M4 x 0.7
Torque Specification
0.15 ft-lbs (2 N·m)
Important Notes
Estimated value. Ensure connector is fully seated and not damaged before tightening. Avoid over tightening.

Hvac

Torque specifications for Hvac

Ac Compressor

1

Compressor Mounting Bolts (Engine Block Side)

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure proper thread engagement before tightening. Use new bolts if old ones show signs of damage or stretching.
2

Compressor Mounting Bolts (Compressor Bracket Side)

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure proper thread engagement before tightening. Use new bolts if old ones show signs of damage or stretching.
3

Compressor Line Fittings (Refrigerant Hoses)

N/A - Flare or O-Ring Fitting
Torque Specification
13.5 ft-lbs (18 N·m)
Important Notes
Estimated value. Do not over-tighten; fittings should be snug. Always use new O-rings and apply a thin coat of refrigerant oil to the O-rings before installation. These are flare or O-ring fittings and should not be over tightened.

Ac Condenser

1

Condenser Mounting Bolts/Screws

M6 x 1.0
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
Ensure proper alignment before tightening. Do not over-tighten.

Evaporator Core

1

Evaporator Core Mounting Bolts/Screws

M5 x 0.8
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Do not over-tighten these small bolts. Proper seating of the evaporator core is crucial.
2

Expansion Valve Mounting Bolts/Screws

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure a good seal between the expansion valve and the evaporator core to prevent refrigerant leaks. Always use new O-rings and lightly lubricate them with refrigerant oil.

Hvac Blower Motor

1

Blower Motor Mounting Screws

M5 x 0.8 (Self-Tapping)
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
These are often self-tapping screws; do not over-tighten to avoid stripping the plastic housing. Check alignment before tightening.

Hvac Control Module

1

Control Module Mounting Screws/Bolts

M4 x 0.7
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Do not over-tighten to avoid damaging the module.

Hvac Housing

1

Housing Case Bolts/Screws

M5 x 0.8
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
These fasteners are often plastic or thread into plastic; do not over-tighten to avoid damage.

Refrigerant Pressure Sensor

1

Refrigerant Pressure Sensor Mounting

N/A - Threaded Sensor Body
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Do not over-tighten the sensor body to avoid damaging the sensor or the fitting. Apply a thin layer of refrigerant oil to the o-ring before installation. Estimated Value.

Ac Service Ports

1

A/C High & Low Pressure Service Port Fittings

N/A - Threaded Port Fitting
Torque Specification
1 ft-lbs (1.3 N·m)
Important Notes
These fittings have internal seals that provide the seal. Over tightening can cause damage. Hand tighten plus a 1/4 turn.

Suspension

Torque specifications for Suspension

Front Suspension

1

Upper Control Arm to Frame Bolts

M12 x 1.75
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Secures the upper control arm to the vehicle's frame. Critical for maintaining proper suspension geometry and vehicle stability. If loose, it can cause instability and improper wheel alignment.
2

Upper Control Arm to Knuckle Ball Joint Nut

M12 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Connects the upper control arm to the steering knuckle. Crucial for proper wheel movement and steering control. Over-tightening can damage the ball joint.
3

Lower Control Arm to Frame Bolts

M14 x 2.0
Torque Specification
120 ft-lbs (163 N·m)
Important Notes
Attaches the lower control arm to the vehicle frame. This is a critical connection that bears a significant amount of load. Loose bolts can lead to suspension instability and failure. Estimated value.
4

Lower Control Arm to Knuckle Ball Joint Nut

M12 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Connects the lower control arm to the steering knuckle via a ball joint. Ensures proper pivot of the wheel. Correct torque ensures the ball joint is secure but not over-stressed.
5

Strut Assembly Upper Mount Bolts

M10 x 1.5
Torque Specification
1. 30 ft-lbs (41 N·m) 2. 90°
Important Notes
These secure the strut assembly to the vehicle body. Critical for proper suspension support and stability. The angle-tightening ensures the proper clamping force.
6

Strut Assembly Lower Mounting Bolts

M14 x 2.0
Torque Specification
100 ft-lbs (136 N·m)
Important Notes
Connects the strut to the steering knuckle. Supports the weight of the vehicle and controls suspension movement. Loose bolts can result in rattling and unstable handling. Estimated value.
7

Sway Bar Link to Strut Bolt

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Connects the sway bar link to the strut assembly to transfer force during cornering. Important for proper sway bar function.
8

Sway Bar Link to Sway Bar Bolt

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Connects the sway bar link to the sway bar to transfer force during cornering. Important for proper sway bar function.
9

Sway Bar Bushing Bracket Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secure the sway bar to the frame via bushings. Important for correct sway bar function.
10

Brake Caliper Bracket Bolts

M14 x 2.0
Torque Specification
111 ft-lbs (150 N·m)
Important Notes
Attaches the brake caliper mounting bracket to the steering knuckle. Critical for braking safety. Estimated value.
11

Wheel Speed Sensor Bolt

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Secures the wheel speed sensor which is important for ABS and traction control.

Rear Suspension

1

Upper Control Arm to Frame Bolts

M12 x 1.75
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Secures the upper control arm to the chassis. These bolts affect the vehicle's alignment. Estimated value.
2

Upper Control Arm to Knuckle Bolt

M12 x 1.75
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Connects the upper control arm to the knuckle, facilitating proper wheel movement and alignment. Estimated value.
3

Lower Control Arm to Frame Bolts

M14 x 2.0
Torque Specification
120 ft-lbs (163 N·m)
Important Notes
Secures the lower control arm to the frame. This is a load-bearing part of the suspension. Estimated value.
4

Lower Control Arm to Knuckle Bolt

M14 x 2.0
Torque Specification
100 ft-lbs (136 N·m)
Important Notes
Connects the lower control arm to the knuckle, crucial for stability and handling. Estimated value.
5

Rear Strut Assembly Upper Mount Bolts

M10 x 1.5
Torque Specification
1. 30 ft-lbs (41 N·m) 2. 90°
Important Notes
Secures the top of the strut to the vehicle chassis. Important for proper suspension function. Angle tightening provides proper clamping force.
6

Rear Strut Assembly Lower Mount Bolt

M14 x 2.0
Torque Specification
90 ft-lbs (122 N·m)
Important Notes
Attaches the lower strut to the knuckle/control arm. Vital for stability and load transfer. Estimated value.
7

Sway Bar Link to Control Arm Bolt

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Connects the sway bar to the control arm.
8

Sway Bar Bushing Bracket Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secures the sway bar bushing to the frame. This will maintain proper sway bar function.
9

Brake Caliper Bracket Bolts

M12 x 1.75
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Secures the rear brake caliper bracket. Critical for braking safety. Estimated value.
10

Wheel Speed Sensor Bolt

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Secures the wheel speed sensor which is important for ABS and traction control.

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 torque specification for the lug nuts on a 2023 Buick Regal?

140 ft-lbs (190 Nm)

Q2

What IS the torque specification for the oil drain plug on a 2021 Buick Regal?

25 ft-lbs (34 Nm)

Q3

What IS the torque specification for the spark plugs on a 2019 Buick Regal?

25 ft-lbs (34 Nm)

Q4

What type of torque wrench should I use for my 2018 Buick Regal?

A click-type torque wrench IS recommended for accurate torque application.

Q5

How often should I torque the lug nuts on my Buick Regal?

It IS recommended to torque the lug nuts every time the tires are removed and replaced.

Q6

What are the consequences of over-tightening bolts?

Over-tightening bolts can strip the threads, stretch the bolt, or damage the mating surface.

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 regal.

  • 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.
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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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Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

  • ASE Master Technician Certification
  • Advanced Diagnostic Specialist
  • Hybrid/Electric Vehicle Systems
  • Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

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