GM Service Manual Online
For 1990-2009 cars only

Notice: All fasteners are important attaching parts as they affect the performance of vital components and/or could result in major repair expense. Where specified in this section, fasteners must be replaced with parts of the same part number or an approved equivalent. Do not use fasteners of an inferior quality or substitute design.

Torque values must be used as specified during reassembly to ensure proper retention of all components.

Throughout this Section, fastener torque wrench specifications may be accompanied with the following Identification marks:

+ Fasteners must be replaced after loosening.

* Fasteners either have micro encapsulated sealant applied or incorporate a mechanical thread lock and should only be re-used once. If in doubt, replacement is recommended.

! Fasteners must not be final tightened until vehicle is at curb height with the vehicle weight on all four wheels.

# Fasteners must be new and assembled dry.

If one of these identification marks is present alongside a fastener torque wrench specification, the recommendation regarding that fastener must be adhered to.

Description

Specification

Air Intake Hose Clamp

1.5-2.5 N·m

Engine Oil Pan Drain Plug

25.0 N·m

Oil Filter Adapter

55.0 N·m

Engine Oil Filter

30.0 N·m

Oil Pressure Sensor

20.0 N·m

Oil Level Indicator Tube Attaching Bolt

25.0 N·m

Accessory Belt Idler Pulley Attaching Bolt

50.0 N·m

Accessory Belt Tensioner Attaching Bolt

50.0 N·m

A/C Compressor Belt Idler pulley Attaching Bolt

50.0 N·m

A/C Compressor Belt Tensioner Attaching Bolt

25.0 N·m

Fuel Rail Attaching Bolts

10.0 N·m

Throttle Body Attaching Bolt

12.0 N·m

Intake Manifold Attaching Bolts

Stage 1

5.0 N·m

Stage 2

8.0-12.0 N·m

Vapor Vent Pipe Bolt/Stud

12.0 N·m

PCV Oil Separator Attaching Bolt

6.0-10.0 N·m

Valley Cover Attaching Bolt

25.0 N·m

Knock Sensor

20.0 N·m

Valve Rocker Cover Attaching Bolt

12.0 N·m

Ignition Coil Attaching Screw

12.0 N·m

Ignition Coil Bracket Attaching Stud/Screw

12.0 N·m

Rocker Arm Attaching Bolts With No. 1 Cylinder at TDC:

Exhaust Valve, Cylinder 1, 2, 7 and 8

25.0-35.0 N·m

Intake Valve, Cylinder No. 1, 3, 4 and 5

25.0-35.0 N·m

After 350 Degree Crankshaft Rotation:

Exhaust Valve Cylinder 3, 4, 5 and 6

25.0-35.0 N·m

Intake Valve, Cylinder No. 2, 6, 7 and 8

25.0-35.0 N·m

Spark Plug:

Used Cylinder Head

15.0 N·m

New Cylinder Head

20.0 N·m

Exhaust Manifold Heat Shield Attaching Bolt

9.0 N·m

Exhaust Manifold Attaching Bolt

Stage 1

15.0 N·m

Stage 2

25.0 N·m

Coolant Temperature Sensor

20.0 N·m

Cylinder Head Attaching Bolts All M11 and M8 Bolts Stage 1

30.0 N·m

+ M11 Bolts only:

Stage 2

90° turn angle

Stage 3

90° turn angle

Hydraulic Valve Lifter Guide Attaching Bolt

12.0 N·m

Crankshaft Balancer Attaching Bolt:

Stage 1 (installation with used bolt)

140.0-160.0 N·m

+ Stage 2

50.0 N·m

Stage 3

140° turn angle

Right and Left-hand Close-Out Cover Attaching Screw

10.0 N·m

Engine Mount and Bracket Attaching Nut

80.0 N·m

Engine Mounting Bracket and Cylinder Block Attaching Bolt

50.0 N·m

Engine Mount and Crossmember Attaching Nut

8.0 N·m

Oil Pan Baffle Attaching Bolt

12.0 N·m

Oil Gallery Plug

25.0 N·m

Oil Filter Transfer Tube Attaching Bolt

12.0 N·m

Oil Pan Transfer Cover Attaching Nut

12.0 N·m

Oil Pan/Front Cover Attaching Bolt

25.0 N·m

Oil Pan/Rear Cover Attaching Bolt

12.0 N·m

Oil Pan/Cylinder Block Attaching Bolt

25.0 N·m

Engine Front Cover Attaching Bolt

25.0 N·m

+ Flexplate Attaching Bolt:

Stage 1

20.0 N·m

Stage 2

50.0 N·m

Stage 3

100.0 N·m

Engine Rear Cover Attaching Bolt

25.0 N·m

Oil pump Cover to Pump Body Attaching Bolt

12.0 N·m

Oil Pump Pressure Relief Plug

12.0 N·m

Oil Pump Attaching Bolt

25.0 N·m

Oil Pump Pick-up Tube Attaching Screw

12.0 N·m

Crankshaft Oil Deflector Attaching Nut

25.0 N·m

Camshaft Sprocket Attaching Bolt

30.0-35.0 N·m

Timing Chain Dampener Attaching Bolt

30.0-40.0 N·m

Camshaft Retainer Attaching Bolt

25.0 N·m

Camshaft Position Sensor Attaching Bolt

25.0 N·m

+ Connecting Rod Bearing Cap Attaching Bolt:

Stage 1

20.0 N·m

Stage 2

75° turn angle

Main Bearing Inner Attaching Bolts (1-10):

Stage 1

20.0 N·m

Stage 2

80° turn angle

Main Bearing Outer Attaching Studs (11-20):

Stage 1

20.0 N·m

Stage 2

53° turn angle

+ Main Bearing side Cap Bolts

25.0 N·m

Crankshaft Position Sensor

25.0 N·m

Coolant Drain Plug

60.0 N·m

Oil Gallery Drain Plug

60.0 N·m

Flywheel Holding Tool, No. J42386-A

50.0 N·m

Alignment Tool to Front Cover Attaching Bolt

25.0 N·m

Front Engine Cover Alignment Tool to Cylinder Block Attaching Bolt

25.0 N·m

Rear Cover to Engine Alignment Tool Attaching Bolt

25.0 N·m

Rear Engine Cover to Rear Cover Alignment Tool Attaching Bolt

12.0 N·m

Main Bearing Removal Tool Attaching Bolt

11.0 N·m