GMC Vehicle Models Jimmy 1995-2001 Torque Specifications
GMC Vehicle Models Jimmy 1995-2001

GMC Vehicle Models Jimmy 1995-2001 Torque Specifications

Complete GMC Vehicle Models Jimmy 1995-2001 torque specifications guide. Includes factory-specified torque values, torque sequences, and technical specifications for all components including body, brakes, drivetrain, electrical, emissions sensors, fuel, exhaust, HVAC, and suspension. Essential information for proper assembly and maintenance.

Updated

Important Information

Safety guidelines and reference information for proper torque application

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

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

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

Used for gaskets and cover plates

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

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

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

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

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

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

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

Prevention:

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

Reusing TTY Bolts

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

Prevention:

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

Dry vs. Lubricated

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

Prevention:

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

Recommended Tools

Torque Wrench (1/4" Drive)

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

Torque Wrench (3/8" Drive)

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

Torque Wrench (1/2" Drive)

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

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

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

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Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

4.3l Engine

Torque specifications for 4.3L Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 23 ft-lbs (31 N·m)
Important Notes
Follow the manufacturer's torque sequence for proper sealing.

Crankshaft And Bearings

1

Main Bearing Bolts

M12 x 1.75
Torque Specification
95 ft-lbs (129 N·m)
Important Notes
Ensure the bearing caps are properly aligned before torquing.
2

Connecting Rod Nuts

M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure the connecting rod bearings are properly seated before torquing.

Flywheel

1

Flywheel Bolts

M12 x 1.75
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Ensure the flywheel is properly aligned before torquing.

Oil System

1

Oil Pan Bolts

M8 x 1.25
Torque Specification
9.2 ft-lbs (12 N·m)
Important Notes
Ensure the oil pan gasket is properly seated before torquing.
2

Oil Filter Housing Bolt

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the housing is properly aligned before torquing.
3

Oil Drain Plug Bolt

M14 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the drain plug gasket is in good condition before torquing.

Valve Train

1

Valve Cover Bolts

M6 x 1.0
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Ensure the valve cover gasket is properly seated before torquing.
2

Rocker Arm Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the rocker arms are properly aligned before torquing.

Timing System

1

Timing Chain Tensioner Bolt

M8 x 1.25
Torque Specification
31 ft-lbs (42 N·m)
Important Notes
Ensure the tensioner is properly aligned before torquing.
2

Camshaft Sprocket Bolt

M12 x 1.75
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Ensure the sprocket is properly aligned before torquing.

Intake And Exhaust

1

Intake Manifold Bolts

M8 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the intake manifold gasket is properly seated before torquing.
2

Exhaust Manifold Bolts

M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure the exhaust manifold gasket is properly seated before torquing.

Cooling System

1

Water Pump Bolts

M8 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure the water pump gasket is properly seated before torquing.
2

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the thermostat housing gasket is properly seated before torquing.

Accessories

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
35 ft-lbs (48 N·m)
Important Notes
Ensure the starter motor is properly aligned before torquing.
2

Alternator Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the alternator is properly aligned before torquing.
3

Power Steering Pump Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the power steering pump is properly aligned before torquing.

Fuel System

1

Fuel Injector Bolts

M6 x 1.0
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the fuel injectors are properly seated before torquing.
2

Fuel Rail Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the fuel rail is properly aligned before torquing.

Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the spark plugs are properly seated before torquing.

Emissions Control

1

EGR Valve Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the EGR valve is properly aligned before torquing.

Throttle Body

1

Throttle Body Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the throttle body is properly aligned before torquing.

4l60 Transmission

Torque specifications for 4l60 Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M10 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure the transmission is properly aligned before tightening.

Oil Pan

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
9.2 ft-lbs (12 N·m)
Important Notes
Use a new gasket and ensure the pan surface is clean before installation.

Fluid Plugs

1

Transmission Drain Plug

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the plug threads are clean and free of debris.
2

Transmission Fill Plug

M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the plug threads are clean and free of debris.

Drive Axle

1

Drive Axle/Half Shaft Bolts

M12 x 1.5
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Ensure the axle is properly seated before tightening.
2

Propeller/Drive Shaft Bolts

M8 x 1.25
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Ensure the drive shaft is properly aligned before tightening.

Torque Converter

1

Torque Converter Bolts

M10 x 1.25
Torque Specification
46 ft-lbs (62 N·m)
Important Notes
Ensure the torque converter is properly seated before tightening.

Bellhousing

1

Bellhousing Bolts

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure the bellhousing is properly aligned with the engine block.

Valve Body

1

Valve Body Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the valve body is properly seated before tightening.

Output Shaft

1

Output Shaft Nut

M24 x 1.5
Torque Specification
180 ft-lbs (244 N·m)
Important Notes
Ensure the output shaft is properly seated before tightening.

Cooler Lines

1

Transmission Cooler Line Fittings

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the cooler lines are properly aligned before tightening.

Body

Torque specifications for Body

Suspension And Steering

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
100 ft-lbs (136 N·m)
Important Notes
Ensure lug nuts are tightened in a star pattern to ensure even clamping force.
2

Strut/Shock Absorber Mounting Bolts

M10 x 1.25
Torque Specification
35 ft-lbs (48 N·m)
Important Notes
Ensure proper alignment of the strut or shock absorber before tightening.
3

Control Arm Bolts

M12 x 1.75
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Ensure the control arm is properly seated before tightening.
4

Ball Joint Nut

M10 x 1.25
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Ensure the ball joint is properly seated before tightening.
5

Tie Rod End Nut

M10 x 1.25
Torque Specification
35 ft-lbs (48 N·m)
Important Notes
Ensure the tie rod end is properly seated before tightening.
6

Sway Bar Link Nut

M10 x 1.25
Torque Specification
35 ft-lbs (48 N·m)
Important Notes
Ensure the sway bar link is properly seated before tightening.
7

Steering Gear/Rack Bolts

M12 x 1.75
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Ensure the steering gear or rack is properly aligned before tightening.

Fuel System

1

Fuel Tank Strap Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure the fuel tank is properly seated before tightening.
2

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the fuel filler neck is properly aligned before tightening.

Electrical System

1

Battery Terminal Nuts

M6 x 1.0
Torque Specification
5.83 ft-lbs (8 N·m)
Important Notes
Ensure the battery terminals are clean and properly seated before tightening.

Body And Frame

1

Body Mount Bolts

M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure the body is properly aligned with the frame before tightening.
2

Door Hinge Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the door is properly aligned before tightening.
3

Hood Hinge Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the hood is properly aligned before tightening.
4

Tailgate Hinge Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the tailgate is properly aligned before tightening.
5

Seat Belt Anchor Bolts

M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure the seat belt anchor is properly seated before tightening.
6

Roof Rack Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the roof rack is properly aligned before tightening.
7

Bumper Mounting Bolts

M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure the bumper is properly aligned before tightening.

Brakes

Torque specifications for Brakes

Brake Caliper System

1

Brake Caliper Bolts

M10 x 1.25
Torque Specification
32 ft-lbs (43 N·m)
Important Notes
These bolts secure the brake caliper to the mounting bracket. Proper torque ensures the caliper is securely attached, preventing movement or misalignment.
2

Brake Caliper Mounting Bracket Bolts

M12 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
These bolts attach the caliper mounting bracket to the steering knuckle or axle. Correct torque ensures the bracket remains firmly in place.

Brake Rotor Drum System

1

Brake Disc/Drum Retaining Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
These bolts secure the brake rotor or drum to the wheel hub. Proper torque ensures the rotor/drum remains securely attached.

Brake Hydraulic System

1

Brake Hose Banjo Bolt

M10 x 1.0
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
The banjo bolt connects the brake hose to the caliper or brake line. Proper torque ensures a leak-free connection.
2

Brake Line Fittings (Flare Nuts)

M10 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
These fittings connect the brake lines to the calipers, master cylinder, or proportioning valve. Proper torque ensures a leak-free connection.

Brake Master Cylinder Booster System

1

Brake Master Cylinder Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
These bolts secure the master cylinder to the brake booster. Proper torque ensures the master cylinder is firmly attached.
2

Brake Booster Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
These bolts secure the brake booster to the firewall. Proper torque ensures the booster remains securely attached.

Parking Brake System

1

Parking Brake Cable Bracket Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
These bolts secure the parking brake cable bracket to the vehicle frame or axle. Proper torque ensures the parking brake system functions correctly.

Wheel Attachment System

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
100 ft-lbs (136 N·m)
Important Notes
These lug nuts secure the wheel to the hub. Proper torque ensures the wheel is securely fastened, preventing issues like rotor warping or uneven braking.

Drivetrain

Torque specifications for Drivetrain

Engine Transmission Interface

1

Flywheel Bolts

M10 x 1.25
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Ensure flywheel is properly aligned before tightening.

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure transmission is properly aligned before tightening.

Transmission Fluid Management

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
9.2 ft-lbs (12 N·m)
Important Notes
Use a crisscross pattern to ensure even sealing.
2

Transmission Drain and Fill Plugs

M12 x 1.75
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure plugs are properly sealed to prevent leaks.

Drive Axles

1

Drive Axle/Half Shaft Bolts

M10 x 1.25
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Ensure proper alignment of the axle before tightening.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Specification
180 ft-lbs (244 N·m)
Important Notes
Ensure the CV joint is properly seated before tightening.

Propeller Drive Shaft

1

Propeller/Drive Shaft Bolts

M8 x 1.25
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Ensure proper alignment of the drive shaft before tightening.

Differential

1

Differential Cover Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure proper sealing of the differential cover.
2

Differential Drain/Fill Plug

M12 x 1.75
Torque Specification
24 ft-lbs (33 N·m)
Important Notes
Ensure plugs are properly sealed to prevent leaks.
3

Rear Axle Pinion Nut

M24 x 1.5
Torque Specification
200 ft-lbs (271 N·m)
Important Notes
Ensure proper alignment of the pinion gear before tightening.

Transfer Case

1

Transfer Case Mounting Bolts

M12 x 1.75
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure proper alignment of the transfer case before tightening.
2

Transfer Case Drain/Fill Plug

M12 x 1.75
Torque Specification
24 ft-lbs (33 N·m)
Important Notes
Ensure plugs are properly sealed to prevent leaks.
3

Transfer Case Output Shaft Flange Bolts

M10 x 1.25
Torque Specification
35 ft-lbs (48 N·m)
Important Notes
Ensure proper alignment of the output shaft flange before tightening.

Front Axle

1

Front Axle Hub Nut

M24 x 1.5
Torque Specification
175 ft-lbs (237 N·m)
Important Notes
Ensure proper seating of the front axle before tightening.

Electrical

Torque specifications for Electrical

Ignition System

1

Ignition Coil Bolt

M8 x 1.25
Torque Specification
13 ft-lbs (18 N·m)
Important Notes
Ensure the ignition coil is properly seated before tightening.

Starting System

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
35 ft-lbs (48 N·m)
Important Notes
Ensure the starter motor is properly aligned with the flywheel before tightening.

Charging System

1

Alternator Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the alternator is properly aligned with the drive belt before tightening.

Battery System

1

Battery Terminal Nuts

M6 x 1.0
Torque Specification
5.8 ft-lbs (8 N·m)
Important Notes
Ensure the battery terminals are clean and free of corrosion before tightening.
2

Ground Strap Bolts

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Ensure the ground strap is properly seated and free of corrosion.

Electrical Control System

1

Fuse Box Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure the fuse box is properly aligned before tightening.
2

Wiring Harness Retaining Bolts

M6 x 1.0
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Ensure the wiring harness is properly routed and secured.
3

ECU/ECM Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure the ECU/ECM is properly seated and grounded.

Lighting System

1

Headlight Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure the headlight housing is properly aligned and grounded.

Emissions Sensors

Torque specifications for Emissions_sensors

Egr System

1

EGR Valve Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the EGR valve gasket is properly seated before tightening.
2

EGR Pipe Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar EGR system components.

Exhaust Manifold

1

Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
1. 13 ft-lbs (18 N·m) 2. 26 ft-lbs (35 N·m)
Important Notes
Follow the specified torque sequence to avoid warping the manifold.
2

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure the manifold is properly aligned before tightening.

Exhaust Pipe

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure the exhaust pipe is properly aligned before tightening.
2

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the catalytic converter is properly aligned before tightening.
3

Muffler to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the muffler is properly aligned before tightening.

Oxygen Sensor

1

Oxygen (O2) Sensor

M18 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure the sensor is properly threaded to avoid cross-threading.

Catalytic Converter

1

Catalytic Converter Heat Shield Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar heat shield components.

Pcv System

1

PCV Valve Mounting Bolt

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensure the PCV valve is properly seated before tightening.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold Headers

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2

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.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure bolts are tightened evenly to avoid warping the flange.

Muffler

1

Muffler to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure gasket is properly seated before tightening.

Exhaust Hangers

1

Exhaust Hanger Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure hangers are properly aligned before tightening.

Oxygen Sensor

1

Oxygen Sensor Bolts

M12 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure sensor is properly seated before tightening.

Heat Shields

1

Heat Shield Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure heat shields are properly aligned before tightening.

Fuel

Torque specifications for Fuel

Fuel Rail System

1

Fuel Rail Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensures a leak-free connection between the fuel rail and intake manifold or cylinder head.
2

Fuel Injector Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensures a proper seal between the fuel injector and the intake manifold or cylinder head.
3

Fuel Injector Rail Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensures the fuel injector rail remains securely attached to the engine.

Fuel Delivery System

1

Fuel Pump Mounting Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensures the fuel pump is securely mounted to the fuel tank or bracket.
2

Fuel Tank Strap Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensures the fuel tank is securely held in place by the straps.
3

Fuel Filler Neck Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensures a tight seal between the fuel filler neck and the fuel tank or body.
4

Fuel Filter Bolt/Nut

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensures a leak-free connection between the fuel filter and fuel line.
5

Fuel Pressure Regulator Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value. Ensures the fuel pressure regulator is securely mounted.
6

Fuel Line Fittings

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value. Ensures leak-free connections between fuel lines and components.
7

Fuel Tank Sender Unit Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value. Ensures a tight seal for the fuel tank sender unit.

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
Ensure bolts are tightened in a crisscross pattern to evenly distribute load.

Ac Lines

1

A/C Line Fittings

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Use a torque wrench to avoid overtightening, which can damage fittings.

Evaporator Core

1

Evaporator Core Housing Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems.

Blower Motor

1

Blower Motor Mounting Bolts

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar M5 bolts in HVAC systems.

Heater Core

1

Heater Core Inlet/Outlet Pipe Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems.

Hvac Case

1

HVAC Case Assembly Bolts

M5 x 0.8
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar M5 bolts in HVAC systems.

Suspension

Torque specifications for Suspension

Strut Shock Absorber

1

Upper Strut Mount Bolts

M10 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar components.
2

Strut/Shock Absorber Mounting Bolts

M12 x 1.5
Torque Specification
35 ft-lbs (48 N·m)
3

Lower Shock Absorber Mounting Bolts

M12 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value based on similar components.

Control Arm Ball Joint

1

Control Arm Bolts

M14 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
2

Ball Joint Nut

M12 x 1.25
Torque Specification
50 ft-lbs (68 N·m)

Steering Components

1

Tie Rod End Nut

M12 x 1.25
Torque Specification
35 ft-lbs (48 N·m)
2

Steering Gear/Rack Bolts

M14 x 1.5
Torque Specification
70 ft-lbs (95 N·m)

Sway Bar

1

Sway Bar Link Nut

M10 x 1.25
Torque Specification
35 ft-lbs (48 N·m)
2

Sway Bar Bracket Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value based on similar components.

Wheels Drive Axle

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
100 ft-lbs (136 N·m)
2

Drive Axle/Half Shaft Bolts

M12 x 1.25
Torque Specification
60 ft-lbs (81 N·m)
3

CV Joint/Axle Nut

M24 x 1.5
Torque Specification
180 ft-lbs (244 N·m)

Leaf Springs

1

Leaf Spring U-Bolts

M14 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Estimated value based on similar components.

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 lug nuts on my 1998 GMC Jimmy?

100 ft-lbs plus an additional 1/4 turn

Q2

What IS the proper torque sequence for the cylinder head bolts on my 2001 GMC Jimmy?

Follow the three-step sequence outlined in the GMC service manual: 25 ft-lbs, 50 ft-lbs, and then 90 ft-lbs

Q3

What type of torque wrench should I use for critical torque specifications, such as the crankshaft pulley bolt?

Use a high-quality torque wrench that IS calibrated to GMC specifications and has a range that covers the required torque value

Q4

How do I ensure that a torque wrench IS accurate?

Have your torque wrench inspected and calibrated by a certified technician or use a torque wrench with a built-in calibration feature

Q5

What are the consequences of over-tightening or under-tightening bolts?

Over-tightening can stretch or break bolts, while under-tightening can lead to loose components and potential failures

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 jimmy.

  • 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

Tightening sequences and torque values for various engine components

  • Cylinder head bolts: 80 Nm (59 ft-lb) in three stages
  • Intake manifold bolts: 25 Nm (18 ft-lb)
  • Exhaust manifold bolts: 30 Nm (22 ft-lb)
  • Oil pan bolts: 10 Nm (7 ft-lb)
  • Timing cover bolts: 15 Nm (11 ft-lb)
View full procedure

Suspension Bolt Torque Specifications

Tightening sequences and torque values for suspension components

  • Control arm bolts: 90 Nm (66 ft-lb)
  • Ball joint bolts: 50 Nm (37 ft-lb)
  • Tie rod end bolts: 40 Nm (29 ft-lb)
  • Sway bar link bolts: 25 Nm (18 ft-lb)
  • Strut bolts: 100 Nm (74 ft-lb)
View full procedure

Brake System Bolt Torque Specifications

Tightening sequences and torque values for brake system components

  • Brake caliper bolts: 120 Nm (89 ft-lb)
  • Brake rotor bolts: 100 Nm (74 ft-lb)
  • Wheel hub bolts: 150 Nm (111 ft-lb)
  • Master cylinder bolts: 25 Nm (18 ft-lb)
  • Brake line fittings: 10 Nm (7 ft-lb)
View full procedure
Technical Service Bulletins

Technical Service Bulletin: Revised Engine Bolt Torque Specifications

2000-04-17

Updated torque specifications for cylinder head and intake manifold bolts due to head gasket issues

1995-2001 jimmy with 4.3L Vortec V6 engine

Resolution: Refer to latest service manual for revised torque specifications

Technical Service Bulletin: Suspension Bolt Failure

2001-08-01

Recall notice regarding potential failure of front suspension lower control arm bolts

1995-2001 jimmy with 4WD

Resolution: Replace all four lower control arm bolts with new high-strength bolts

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The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
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Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
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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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