GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2002 🢒 Impala 🢒 Engine 🢒 Engine Mechanical - 3.8L 🢒 Fastener Tightening Specifications

Fastener Tightening Specifications C, H, W

Fastener Tightening Specifications (C, H, W)

Application

Specifications

Metric

English

Accelerator Control Cable Bracket Bolt/Nut

16 N·m

12 lb ft

Air Injection Check Valve Pipe to Exhaust Manifold Bolt (with NC8 California Emissions)

10 N·m

89 lb in

Air Injection Check Valve to Bracket Bolt (with NC8 California Emissions)

25 N·m

18 lb ft

Air Injection Pipe to Throttle Body Nut

10 N·m

89 lb in

Balance Shaft Driven Gear Bolt

  • First Pass

22 N·m

16 lb ft

  • Final Pass

70 degrees

Balance Shaft Retainer Bolt

30 N·m

22 lb ft

Camshaft Position Sensor Bolt

10 N·m

89 lb in

Camshaft Sprocket Bolt

  • First Pass

100 N·m

74 lb ft

  • Final Pass

90 degrees

Camshaft Thrust Plate Bolt

15 N·m

11 lb ft

Canister Purge Solenoid Valve Bracket Bolt (L36)

50 N·m

37 lb ft

Canister Purge Vacuum Switch Bolt (L36)

50 N·m

37 lb ft

Connecting Rod Bearing Cap Bolts

  • First Pass

27 N·m

20 lb ft

  • Final Pass

50 degrees

Coolant Drain Plug (Block)

18 N·m

13 lb ft

Crankshaft Balancer Bolt

  • First Pass

150 N·m

111 lb ft

  • Final Pass

76 degrees

Crankshaft Main Bearing Cap Bolt

  • First Pass

40 N·m

30 lb ft

  • Final Pass

110 degrees

Crankshaft Main Bearing Cap Bolt (Side)

  • First Pass

15 N·m

11 lb ft

  • Final Pass

45 degrees

Crankshaft Position Sensor Stud

30 N·m

22 lb ft

Crankshaft Rear Oil Seal Housing Bolt

  • First Pass

15 N·m

11 lb ft

  • Final Pass

50 degrees

Cylinder Head Bolt

  • First Pass

50 N·m

37 lb ft

  • Final Pass

120 degrees

Drive Belt Tensioner Bolt/Nut

50 N·m

37 lb ft

Drive Belt Tensioner Bracket Stud

17 N·m

12 lb ft

EGR Valve Adapter to Cylinder Head Bolt/Stud

50 N·m

37 lb ft

EGR Valve Inlet Pipe to Exhaust Manifold Bolt

29 N·m

21 lb ft

EGR Valve Nut

29 N·m

21 lb ft

EGR Valve Outlet Pipe Bolt/Nut

29 N·m

21 lb ft

EGR Valve Wiring Harness Heat Shield Bolt/Nut

10 N·m

89 lb in

Engine Coolant Temperature Sensor

25 N·m

18 lb ft

Engine Flywheel Bolt

  • First Pass

15 N·m

11 lb ft

  • Final Pass

50 degrees

Engine Front Cover Bolt/Stud

  • First Pass

20 N·m

15 lb ft

  • Final Pass

40 degrees

Engine Lift Bracket Bolt/Nut/Stud

30 N·m

22 lb ft

Engine Wiring Harness Heat Shield Bolt/Nut

10 N·m

89 lb in

Exhaust Manifold Bolt/Nut

30 N·m

22 lb ft

Exhaust Manifold Heat Shield Nut

20 N·m

15 lb ft

Exhaust Manifold Stud

10 N·m

89 lb in

Fuel Injector Rail Assembly Nut

10 N·m

89 lb in

Fuel Injector Rail Stud

25 N·m

18 lb ft

Fuel Injector Sight Shield Bracket Nut

30 N·m

22 lb ft

Generator Brace Bracket Bolt

50 N·m

37 lb ft

Generator Bracket Bolt

50 N·m

37 lb ft

Heated Oxygen Sensor

42 N·m

31 lb ft

Heated Inlet Pipe Nut

25 N·m

18 lb ft

Ignition Control Module Bracket Stud (L36)

17 N·m

12 lb ft

Ignition Control Module Assembly Bracket Bolt

30 N·m

22 lb ft

Ignition Control Module Assembly Bracket Nut

50 N·m

37 lb ft

Ignition Control Module Assembly Nut

8 N·m

71 lb in

Lower Intake Manifold Bolt

15 N·m

11 lb ft

MAP Sensor Bolt

3 N·m

22 lb in

MAP Sensor Bracket Bolt

30 N·m

22 lb ft

Oil Cooler Adapter Connector

50 N·m

37 lb ft

Oil Filter

30 N·m

22 lb ft

Oil Filter Adapter Bolt - First Pass

15 N·m

11 lb ft

Oil Filter Adapter Bolt - Final Pass

50 degrees

Oil Gallery Plug

30 N·m

22 lb ft

Oil Level Indicator Tube Stud/Nut

19 N·m

14 lb ft

Oil Level Sensor Bolt

20 N·m

15 lb ft

Oil Pan Bolt

14 N·m

125 lb in

Oil Pan Drain Plug

30 N·m

22 lb ft

Oil Pressure Sensor

16 N·m

12 lb ft

Oil Pump Cover Screw

11 N·m

98 lb in

Oil Pump Pipe and Screen Bolt

15 N·m

11 lb ft

Spark Plug (Initial Installation)

27 N·m

20 lb ft

Spark Plug (Reinstallation)

15 N·m

11 lb ft

Starter Motor Heat Shield Bolt

30 N·m

22 lb ft

Supercharger Bolt/Stud

23 N·m

17 lb ft

Supercharger Bypass Valve and Fuel Pressure Regulator Valve Harness Bolt

10 N·m

89 lb in

Supercharger Bypass Valve Nut

8 N·m

71 lb in

Throttle Body Bolt/Nut

10 N·m

89 lb in

Throttle Body Support Bolt

16 N·m

12 lb ft

Timing Chain Dampener Bolt

22 N·m

16 lb ft

Upper Intake Manifold Bolt (L36)

10 N·m

89 lb in

Vacuum Solenoid Valve Bolt (with NC8 California Emissions)

10 N·m

89 lb in

Valve Lifter Guide Retainer Bolt

30 N·m

22 lb ft

Valve Rocker Arm Bolt

  • First Pass

15 N·m

11 lb ft

  • Final Pass

90 degrees

Valve Rocker Arm Cover Bolt

10 N·m

89 lb in

Water Outlet Housing Bolt

27 N·m

20 lb ft

Water Pump Bolt

  • Large Bolt

34 N·m

25 lb ft

  • Small Bolt

22 N·m

16 lb ft

Water Pump Pulley Bolt

13 N·m

116 lb in

Fastener Tightening Specifications F

Fastener Tightening Specifications (F)

Application

Specifications

Metric

English

Balance Shaft Driven Gear Bolt

  • First Pass

22 N·m

16 lb ft

  • Final Pass

70 degrees

Balance Shaft Retainer Bolt

30 N·m

22 lb ft

Camshaft Position Sensor Bolt

10 N·m

89 lb in

Camshaft Sprocket Bolt

  • First Pass

100 N·m

74 lb ft

  • Final Pass

90 degrees

Camshaft Thrust Plate Bolt

15 N·m

11 lb ft

Connecting Rod Bearing Cap Bolts

  • First Pass

27 N·m

20 lb ft

  • Final Pass

50 degrees

Coolant Drain Plug (Block)

18 N·m

13 lb ft

Crankshaft Balancer Bolt

  • First Pass

150 N·m

111 lb ft

  • Final Pass

114 degrees

Crankshaft Main Bearing Cap Bolt

  • First Pass

40 N·m

30 lb ft

  • Final Pass

110 degrees

Crankshaft Main Bearing Cap Bolt (Side)

  • First Pass

15  N·m

11 lb ft

  • Final Pass

45 degrees

Crankshaft Position Sensor Stud

30 N·m

22 lb ft

Crankshaft Rear Oil Seal Housing Bolt

  • First Pass

15 N·m

11 lb ft

  • Final Pass

50 degrees

Cylinder Head Bolt

  • First Pass

50 N·m

37 lb ft

  • Final Pass

120 degrees

Drive Belt Tensioner Bolt/Nut

50 N·m

37 lb ft

Drive Belt Tensioner Bracket Stud

6 N·m

53 lb in

EGR Valve Adapter Bolt

25 N·m

18 lb ft

EGR Valve Adapter Nut

50 N·m

37 lb ft

EGR Valve Adapter Stud

6 N·m

53 lb in

EGR Valve Inlet Pipe Bolt

29 N·m

21 lb ft

EGR Valve Nut

29 N·m

21 lb ft

EGR Valve Outlet Pipe Bolt/Nut

29 N·m

21 lb ft

Engine Coolant Temperature Sensor

25 N·m

18 lb ft

Engine Flywheel Bolt

  • First Pass

15 N·m

11 lb ft

  • Final Pass

50 degrees

Engine Front Cover Bolt/Stud

  • First Pass

20 N·m

15 lb ft

  • Final Pass

40 degrees

Engine Lift Bracket Bolt (Front)

25 N·m

18 lb ft

Engine Lift Bracket Bolt/Stud (Rear)

30 N·m

22 lb ft

Engine Oil Gallery Plug

30 N·m

22 lb ft

Engine Oil Pressure Sensor

16 N·m

12 lb ft

Engine Wiring Harness Bracket Stud

50 N·m

37 lb ft

Exhaust Manifold Bolt/Nut

23 N·m

17 lb ft

Exhaust Manifold Heat Shield Bolt

10 N·m

89 lb in

Exhaust Manifold Heat Shield Nut

23 N·m

17 lb ft

Exhaust Manifold Pipe Stud

6 N·m

53 lb in

Exhaust Manifold Stud

10 N·m

89 lb in

Fuel Injector Rail Assembly Nut

9 N·m

80 lb in

Fuel Injector Rail Stud

25 N·m

18 lb ft

Generator Bracket Bolt

50 N·m

37 lb ft

Heated Oxygen Sensor

42 N·m

31 lb ft

Ignition Control Module Assembly Nut

30 N·m

22 lb ft

Ignition Control Module Bracket Bolt

50 N·m

37 lb ft

Lower Intake Manifold Bolt

15 N·m

11 lb ft

Oil Cooler Adapter Connector

50 N·m

37 lb ft

Oil Filter

30 N·m

22 lb ft

Oil Filter Adapter Bolt

30 N·m

22 lb ft

Oil Level Indicator Tube Nut

19 N·m

14 lb ft

Oil Level Sensor Bolt

20 N·m

15 lb ft

Oil Pan Bolt

14 N·m

125 lb in

Oil Pan Drain Plug

30 N·m

22 lb ft

Oil Pump Cover Screw

11 N·m

98 lb in

Oil Pump, Pipe and Screen Bolt

15 N·m

11 lb ft

Spark Plug (Initial Installation)

27 N·m

20 lb ft

Spark Plug (Re-Installation)

15 N·m

11 lb ft

Spark Plug Wire Retainer Bracket Bolt

30 N·m

22 lb ft

Starter Motor Heat Shield Bolt

30 N·m

22 lb ft

Throttle Body Bolt/Nut

10 N·m

89 lb in

Timing Chain Dampener Bolt

22 N·m

16 lb ft

Upper Intake Manifold Bolt

  • Vertical

15 N·m

11 lb ft

  • Side

30 N·m

22 lb ft

Vacuum Source Manifold Bolt

10 N·m

89 lb in

Valve Lifter Guide Retainer Bolt

30 N·m

22 lb ft

Valve Rocker Arm Bolt

  • First Pass

15 N·m

11 lb ft

  • Final Pass

90 degrees

Valve Rocker Arm Cover Bolt

10 N·m

89 lb in

Water Outlet Housing Bolt

27 N·m

20 lb ft

Water Pump Bolt

  • Large Bolt

34 N·m

25 lb ft

  • Small Bolt

22 N·m

16 lb ft

Water Pump Pulley Bolt

13 N·m

116 lb in

Application

Specifications

Metric

English

A/C Compressor Bracket Bolt

50 N·m

37 lb ft

A/C Compressor Nut

30 N·m

22 lb ft

Balance Shaft Gear Bolt

  • First Pass

22 N·m

16 lb ft

  • Second Pass

70 degrees

Camshaft Position Sensor Bolt

10 N·m

89 lb in

Camshaft Sprocket Bolt

  • First Pass

100 N·m

74 lb ft

  • Second Pass

90 degrees

Camshaft Thrust Plate Bolt

15 N·m

11 lb ft

Connecting Rod Bearing Cap Nut

  • First Pass

27 N·m

20 lb ft

  • Second Pass

50 degrees

Crankshaft Balancer Bolt

  • First Pass

150 N·m

111 lb ft

  • Second Pass

76 degrees

Crankshaft Position Sensor Stud

30 N·m

22 lb ft

Crankshaft Rear Oil Seal Housing Bolt

  • First Pass

15 N·m

11 lb ft

  • Second Pass

50 degrees

Cylinder Head Bolt

  • First Pass

50 N·m

37 lb ft

  • Second Pass

120 degrees

Drive Belt Tensioner Bolt

50 N·m

37 lb ft

EGR Valve Adapter Bolt

50 N·m

37 lb ft

EGR Valve Nut

29 N·m

21 lb ft

EGR Valve Outlet Pipe Bolt/Nut

29 N·m

21 lb ft

EGR Valve Wiring Harness Heat Shield Bolt/Nut

10 N·m

89 lb in

Engine Block Coolant Drain Plug-Knock Sensors

18 N·m

13 lb ft

Engine Coolant Temperature Sensor

25 N·m

18 lb ft

Engine Flywheel Bolt

  • First Pass

15 N·m

11 lb ft

  • Second Pass

50 degrees

Engine Front Cover Bolt/Stud

  • First Pass

20 N·m

15 lb ft

  • Second Pass

40 degrees

Engine Ground Nut

35 N·m

26 lb ft

Engine Lift Bracket Bolt/Nut/Stud

30 N·m

22 lb ft

Engine Mount Bracket Bolt

102 N·m

75 lb ft

Engine Mount Nut (Lower)

78 N·m

58 lb ft

Engine Mount Nut (Upper)

78 N·m

58 lb ft

Engine Mount Strut Bolt

48 N·m

35 lb ft

Engine Mount Strut Bracket Bolt

50 N·m

37 lb ft

Engine Mount Strut Bracket Bolt (Upper Radiator Support)

28 N·m

21 lb ft

Engine Mount Strut Bracket nut (Lower)

30 N·m

22 lb ft

Engine Mount Strut Nut

48 N·m

35 lb ft

Engine Oil Pressure Sensor

16 N·m

12 lb ft

Engine to Transaxle Bolt

75 N·m

55 lb ft

Engine Wiring Harness Bolt

10 N·m

89 lb in

Fuel Injector Sight Shield Bracket Nut

30 N·m

22 lb ft

Generator Brace Bracket Bolt

50 N·m

37 lb ft

Lower Intake Manifold Bolt

15 N·m

11 lb ft

Oil Filter Adapter Bolt

30 N·m

22 lb ft

Oil Level Sensor

20 N·m

15 lb ft

Oil Level Indicator Tube Nut

19 N·m

14 lb ft

Oil Pan Bolt

14 N·m

10 lb ft

Oil Pan Drain Plug

30 N·m

22 lb ft

Oil Pump Cover Screw

11 N·m

98 lb in

Oil Pump, Pipe and Screen Bolt

15 N·m

11 lb ft

Positive Battery Terminal Nut

15 N·m

11 lb ft

Power Steering Bolt

34 N·m

25 lb ft

Throttle Body Support Bolt

10 N·m

89 lb in

Timing Chain Dampener Bolt

22 N·m

16 lb ft

Upper Intake Manifold Bolt

10 N·m

89 lb in

Valve Lifter Guide Bolt

30 N·m

22 lb ft

Valve Rocker Arm Bolt

  • First Pass

15 N·m

11 lb ft

  • Second Pass

90 degrees

Valve Rocker Arm Cover Bolt

10 N·m

89 lb in

Water Outlet Housing Bolt

27 N·m

20 lb ft

Water Pump Pulley Bolt

13 N·m

116 lb in