Contents Wiring diagrams Section: Differentials & Drive Axles All sections

Front Drive Axle: Maintenance Chevrolet Tahoe III

Differentials & Drive Axles 3 illustrations

Adhesives, Fluids, Lubricants, and Sealers

ApplicationType of MaterialGM Part NumberCanadian Part Number
Differential Carrier Assembly Case Mating SurfacesSealantGM P/N 1052942Canadian P/N 10953466 or equivalent
Electric Motor ActuatorSealantGM P/N 12346004 or equivalentCanadian P/N 10953480 or equivalent
Front Drive Axle (8.25" S4WD Axle)LubricantGM P/N 89021671 or SAE 80W-90 GL5Canadian P/N 10950849 or SAE 80W-90 GL5
Front Drive Axle (8.25" F4WD Axle )LubricantSAE 75W-90 Synthetic Axle Lubricant GM P/N 89021677 or equivalent meeting GM Specification 9986115SAE 75W-90 Synthetic Axle Lubricant Canadian P/N 89021678 or equivalent meeting GM Specification 9986115
Front Drive Axle (9.25" Axle )LubricantSAE 75W-90 Synthetic Axle Lubricant GM P/N 89021677 or equivalent meeting GM Specification 9986115SAE 75W-90 Synthetic Axle Lubricant Canadian P/N 89021678 or equivalent meeting GM Specification 9986115
Front Drive Axle Inner Shaft Housing to Differential Carrier AssemblySealantGM P/N 1052942 (Canadian P/N 10953466) or equivalentCanadian P/N 10953466 or equivalent
Pinion Yoke SplinesSealantGM P/N 12346004 (Canadian P/N 10953480) or equivalentCanadian P/N 10953480 or equivalent

Scheme 76

Scheme 76: Front Drive Axle Disassembled Views (9.25 Inch)
CalloutComponent Name
1Front Drive Axle Inner Shaft
2Front Drive Axle Inner Shaft Seal
3Front Drive Axle Inner Axle Shaft Bearing
4Front Drive Axle Inner Shaft Housing
5Front Drive Axle Clutch Gear Thrust Washer
6Front Drive Axle Clutch Gear
7Front Drive Axle Inner Shaft Retaining Ring
8Front Drive Axle Clutch Sleeve
9Front Drive Axle Clutch Shim
10Front Drive Axle Actuator
11Front Drive Axle Inner Shaft Housing Bolt
12Front Drive Axle Clutch Fork Assembly
13Front Drive Axle Clutch Fork Inner Spring
14Front Drive Axle Clutch Shaft Bearing
15Front Drive Axle Clutch Shaft
16Front Differential Carrier Bolt
17Front Differential Carrier
18Front Differential Carrier Half Location Pin
19Front Differential Case Bearing
20Front Differential Bearing Adjuster Nut
21Front Differential Bearing Adjuster Nut Sleeve
22Front Differential Side Bearing Cup
23Differential Ring Gear Bolt
24Front Differential Side Bearing
25Front Differential Pinion Gear Shaft
26Front Differential Case
27Differential Pinion Gear Shaft Lock Bolt
28Differential Side Bearing
29Differential Side Bearing Cup
30Front Differential Ring Gear
31Front Differential Half Carrier Location Pin
32Front Differential Bearing Adjuster Nut Lock
33Differential Pinion Gear
34Differential Pinion Gear Thrust Washer
35Differential Side Gear Thrust Washer
36Differential Side Gear
37Differential Pinion Gear
38Differential Pinion Gear Thrust Washer
39Front Differential Side Gear Spacer
40Front Differential Side Gear
41Front Differential Side Gear Thrust Washer
42Front Differential Drive Pinion Gear
43Differential Drive Pinion Gear Bearing Shim
44Front Differential Drive Pinion Gear Inner Bearing
45Front Differential Drive Pinion Gear Inner Bearing Cup
46Front Differential Drive Pinion Gear Bearing Spacer
47Front Differential Carrier Bushing
48Front Differential Carrier
49Front Differential Bearing Adjuster Nut Lock
50Bolt
51Front Differential Drive Pinion Gear Yoke Nut
52Front Differential Drive Pinion Gear Thrust Washer
53Front Differential Drive Pinion Gear Yoke
54Front Differential Drive Pinion Gear Bearing Dirt Deflector
55Front Differential Drive Pinion Gear Seal
56Front Differential Drive Pinion Gear Outer Bearing Cup
57Front Differential Drive Pinion Gear Outer Bearing
58Front Differential Carrier Bushing
59Differential Bearing
60Front Differential Bearing Adjuster O-Ring Seal
61Front Differential Bearing Adjuster
62Front Drive Axle Inner Shaft Seal
63Front Drive Axle Inner Shaft Retaining Ring
64Front Drive Axle Inner Shaft
65Front Differential Carrier Vent
66Fuel and Oil Resistant Hose
67Clamp
68Front Differential Carrier Vent Hose Connector
69Front Differential Carrier Oil Drain Plug
70Front Differential Carrier Oil Drain Plug Washer
71Front Differential Carrier Oil Fill Plug
72Front Differential Carrier Oil Fill Plug Washer

Scheme 77

Scheme 77: Front Drive Axle Disassembled Views (8.25 Inch (AWD))
CalloutComponent Name
1Output Shaft
2Pinion Bearing Spacer
3Pinion Head Bearing Assembly
4Pinion Shim
5Stem Pinion
6Pinion Flange Nut
7Pinion Flange Washer
8Pinion Flange Assembly
9Pinion Seal
10Pinion Tail Bearing Assembly
11Carrier Housing
12Output Shaft Seal Assembly
13Output Shaft
14Drain Plug Assembly
15Drain Plug Washer
16Fill Plug Assembly
17Fill Plug O-ring Seal
18Carrier Locator Pin
19Vent Connector
20Differential Case
21Ring Gear
22Output Shaft Bearing Assembly
238-Point Lock Ring
24Sleeve and Insert Assembly
25Differential Case Bearing Assembly
26Differential Cross Pin Lock Pin
27Differential Pinion Thrust Washer
28Differential Pinion Gear
29Differential Side Gear Thrust Washer
30Differential Side Gear
31Output Shaft Snap Ring
32Differential Pinion Gear
33Differential Pinion Thrust Washer
34Output Shaft Snap Ring
35Differential Side Gear
36Differential Side Gear Thrust Washer
37Differential Cross Pin
38Ring Gear Bolt
398-Point Lock Ring
40Sleeve and Insert Assembly
41Differential Case Bearing Assembly
42Carrier Gasket
43Carrier Cover
44Tube Locator Pin
45Carrier Bolt
46Tube Bolt
47Output Shaft Seal
48Output Shaft Bearing Assembly
49Tube
50Tube Gasket

Scheme 78

Scheme 78: Front Drive Axle Disassembled Views (8.25 Inch (4WD/Front))
CalloutComponent Name
1Output Shaft
2Pinion Bearing Spacer
3Pinion Head Bearing Assembly
4Pinion Shim
5Stem Pinion
6Pinion Flange Nut
7Pinion Flange Washer
8Pinion Flange Assembly
9Pinion Seal
10Pinion Tail Bearing Assembly
11Carrier Housing
12Output Shaft Seal Assembly
13Output Shaft
14Drain Plug Assembly
15Drain Plug Washer
16Fill Plug Assembly
17Fill Plug O-ring Seal
18Carrier Locator Pin
19Vent Connector
20Differential Case
21Ring Gear
22Output Shaft Bearing Assembly
238-Point Lock Ring
24Sleeve and Insert Assembly
25Differential Side Bearing Assembly
26Differential Cross Pin Lock
27Differential Pinion Thrust Washer
28Differential Pinion Gear
29Differential Side Gear Washer
30Differential Side Gear
31Output Shaft Snap Ring
32Differential Pinion Gear
33Differential Pinion Gear Thrust Washer
34Differential Side Gear
35Differential Side Gear Washer
36Differential Cross Pin
37Ring Gear Bolt
38Output Shaft Bearing Assembly
398-Point Lock Ring
40Sleeve and Insert Assembly
41Differential Side Bearing Assembly
42Carrier Gasket
43Carrier Cover
44Tube Locator Pin
45Inner Output Shaft Thrust Washer
46Inner Output Shaft Bearing Assembly
47Inner Output Shaft
48Carrier Bolt
49Shifter Spring
50Shifter Fork
51Shifter Fork Rod
52Tube Bolt
53Shift Actuator Assembly
54Output Shaft Seal Assembly
55Output Shaft Bearing Assembly
56Tube
57Tube Gasket
58Output Shaft Locator Thrust Washer
59Output Shaft Thrust Washer
60Output Shaft Snap Ring
61Shifter Sleeve

Before beginning diagnosis, review the system description and operation in order to familiarize yourself with the system functions. Refer to Front Drive Axle Description and Operation .