Chevrolet Silverado / GMC Sierra. Service manual — part 1317

2008 Driveline/Axle

Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

SPECIFICATIONS

FASTENER TIGHTENING SPECIFICATIONS

AXLE PRELOAD AND BACKLASH SPECIFICATIONS

Application

Specification

Metric

English

Differential Adjuster Lock Nut Bolt

20 N.m

15 lb ft

Differential Carrier Assembly Case Bolts 8.25 Axle

73 N.m

54 lb ft

Differential Carrier Assembly Case Bolts 9.25 Axle

47 N.m

35 lb ft

Differential Carrier Assembly Mounting Bolts and
Nuts

100 N.m

75 lb ft

Differential Carrier Bracket to Frame Nuts

90 N.m

67 lb ft

Front Differential Carrier Shield Bolts

20 N.m

15 lb ft

Front Drive Axle Actuator

20 N.m

15 lb ft

Inner Shaft Housing to Bracket Nuts

100 N.m

75 lb ft

Inner Shaft Housing to Differential Carrier
Assembly Bolts 8.25 Axle

55 N.m

41 lb ft

Inner Shaft Housing to Differential Carrier
Assembly Bolts 9.25 Axle

40 N.m

30 lb ft

Pinion Shaft Lock Bolt, 9.25 Axle

53 N.m

39 lb ft

Plug, Drain and Fill

33 N.m

24 lb ft

Ring Gear Bolts, 8.25 Axle

120 N.m

89 lb ft

Ring Gear Bolts, 9.25 Axle

138 N.m

102 lb ft

Stabilizer Link Nut

18 N.m

13 lb ft

Vent Hose Connector

28 N.m

21 lb ft

Wheel Drive Shaft Inboard Flange Bolts

79 N.m

58 lb ft

Wheel Drive Shaft to Front Hub Nut

240 N.m

177 lb ft

Yoke Retainer Bolts

25 N.m

18 lb ft

Application

Specification

Metric

English

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

SEALERS, ADHESIVES, AND LUBRICANTS

COMPONENT LOCATOR

FRONT DRIVE AXLE DISASSEMBLED VIEWS (9.25 INCH)

Backlash

0.08-0.25 mm

0.003-0.010 in

Backlash (Preferred)

0.13-0.18 mm

0.005-0.007 in

Pinion Bearing Preload, New Bearings

1.7-3.4 N.m

15-30 lb in

Pinion Bearing Preload, Used Bearings

1.1-2.3 N.m

10-20 lb in

Pinion and Differential Case Bearing Preload, New
Bearings

3.4-6.2 N.m

30-55 lb in

Pinion and Differential Case Bearing Preload, Used
Bearings

2.8-5.1 N.m

25-45 lb in

Application

Type of Material

GM Part Number

Differential Carrier Assembly Case Mating
Surfaces

Sealant

GM P/N 1052942

(Canadian P/N 10953466)

or equivalent

Electric Motor Actuator

Sealant

GM P/N 12346004

(Canadian P/N 10953480)

or equivalent

Front Drive Axle (8.25" S4WD Axle)

Lubricant

GM P/N 89021671

(Canadian P/N 10950849)

or SAE 80W-90 GL5

Front Drive Axle (8.25" F4WD Axle,
9.25" Axle)

Lubricant

SAE 75W-90 Synthetic

Axle Lubricant GM P/N

89021677 (Canadian P/N

89021678) or equivalent

meeting GM Specification

9986115

Front Drive Axle Inner Shaft Housing to
Differential Carrier Assembly

Sealant

GM P/N 1052942

(Canadian P/N 10953466)

or equivalent

Pinion Yoke Splines

Sealant

GM P/N 12346004

(Canadian P/N 10953480)

or equivalent

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 1: Front Drive Axle Component View (9.25 inch)
Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

1

Front Drive Axle Inner Shaft

2

Front Drive Axle Inner Shaft Seal

3

Front Drive Axle Inner Axle Shaft Bearing

4

Front Drive Axle Inner Shaft Housing

5

Front Drive Axle Clutch Gear Thrust Washer

6

Front Drive Axle Clutch Gear

7

Front Drive Axle Inner Shaft Retaining Ring

8

Front Drive Axle Clutch Sleeve

9

Front Drive Axle Clutch Shim

10

Front Drive Axle Actuator

11

Front Drive Axle Inner Shaft Housing Bolt

12

Front Drive Axle Clutch Fork Assembly

13

Front Drive Axle Clutch Fork Inner Spring

14

Front Drive Axle Clutch Shaft Bearing

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

15

Front Drive Axle Clutch Shaft

16

Front Differential Carrier Bolt

17

Front Differential Carrier

18

Front Differential Carrier Half Location Pin

19

Front Differential Case Bearing

20

Front Differential Bearing Adjuster Nut

21

Front Differential Bearing Adjuster Nut Sleeve

22

Front Differential Side Bearing Cup

23

Differential Ring Gear Bolt

24

Front Differential Side Bearing

25

Front Differential Pinion Gear Shaft

26

Front Differential Case

27

Differential Pinion Gear Shaft Lock Bolt

28

Differential Side Bearing

29

Differential Side Bearing Cup

30

Front Differential Ring Gear

31

Front Differential Half Carrier Location Pin

32

Front Differential Bearing Adjuster Nut Lock

33

Differential Pinion Gear

34

Differential Pinion Gear Thrust Washer

35

Differential Side Gear Thrust Washer

36

Differential Side Gear

37

Differential Pinion Gear

38

Differential Pinion Gear Thrust Washer

39

Front Differential Side Gear Spacer

40

Front Differential Side Gear

41

Front Differential Side Gear Thrust Washer

42

Front Differential Drive Pinion Gear

43

Differential Drive Pinion Gear Bearing Shim

44

Front Differential Drive Pinion Gear Inner Bearing

45

Front Differential Drive Pinion Gear Inner Bearing Cup

46

Front Differential Drive Pinion Gear Bearing Spacer

47

Front Differential Carrier Bushing

48

Front Differential Carrier

49

Front Differential Bearing Adjuster Nut Lock

50

2008 Chevrolet Silverado 1500

2008 Driveline/Axle Front Drive Axle - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado