Chevrolet Silverado / GMC Sierra. Service manual — part 806

Fig. 191: Torque Converter Housing with Fluid Pump Installation
Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

1

NEW Fluid Pump Seal

2

Torque Converter (with Fluid Pump) Housing
Assembly

NOTE:

Ensure the turbine shaft (O-ring) seal is not
installed prior to installing the torque converter
housing assembly. The seal may become cut or
damaged during installation of the torque
converter housing assembly.

Bolts M10 x 50 (Qty: 9)

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

OUTPUT SHAFT SEAL REPLACEMENT

Fig. 192: Output Shaft Seal Replacement
Courtesy of GENERAL MOTORS CORP.

3

Procedure:
Tighten in the sequence shown.

Tighten: 72 N.m (53 lb ft)

NOTE:

Refer to Fastener Notice .

4

NEW Turbine Shaft (O-Ring) Seal

Callout

Component Name

Output Shaft Seal Assembly

Special Tools

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

CONTROL VALVE BODY ASSEMBLY INSTALLATION

Fig. 193: Control Valve Body Assembly Installation
Courtesy of GENERAL MOTORS CORP.

1

DT-48021 Seal Installer (6L90). See Special
Tools.

J 8092 Driver Handle (6L90)

J 38869 Output Shaft Seal Installer (6L80).
See Special Tools.

J 45000 Seal Remover. See Special Tools.

Callout

Component Name

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

AUTOMATIC TRANSMISSION ELECTRICAL CONNECTOR PASSAGE
SLEEVE INSTALLATION

1

NEW Fluid Pump Seal Assembly

2

NEW Fluid Pump Seal Assembly

3

NEW Center Support Fluid Passage Seal
Assembly

4

Control Valve Body Assembly
Tip: Align the manual shift shaft position
switch activator slide with the detent lever
guide pin.

5

Bolts M5 x 73 (Qty: 6)

Procedure:
Tighten in the sequence shown.

Tighten: 8 N.m (71 lb in).

Special Tool:
DT-48285 Valve Body Torx Plus Socket (if
applicable). See Special Tools.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - 6L50/6L80/6L90 - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado