Chevrolet Silverado / GMC Sierra. Service manual — part 799

TORQUE CONVERTER FLUID SEAL REPLACEMENT

Fig. 171: Torque Converter Fluid Seal Replacement

1. Thoroughly clean the torque converter housing assembly, including threads, with clean

solvent.

2. Clean sealing surfaces.

3. Inspect all threaded holes. If necessary, repair any thread damage.

1

Line Pressure Test Hole Plug

2

A/Trans Vent Pipe

3

Trans Fluid Cooler Pipe Fitting Seal

Tip: Refer to Fluid Cooler Pipe Seal
Replacement.

NOTE:

Refer to Seal Reuse Notice .

4

Torque Converter Bushing

2008 Chevrolet Silverado 1500

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

Sierra & Silverado

Courtesy of GENERAL MOTORS CORP.

FLUID COOLER PIPE SEAL REPLACEMENT

Fig. 172: Fluid Cooler Pipe Seal Replacement
Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

1

Torque Converter Fluid Seal Retaining Ring

2

Torque Converter Fluid Seal Assembly
Special Tool:
J 45000 Seal Remover. See Special Tools.

Callout

Component Name

1

Trans Fluid Cooler Pipe Fitting Seals (Qty: 2)

Special Tools

DT 47770 Seal Installer. See Special Tools.

J 45201 Cooler Line Seal Remover. See
Special Tools.

2008 Chevrolet Silverado 1500

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

Sierra & Silverado

FLUID PUMP SELECTIVE MEASUREMENT

Fig. 173: Fluid Pump Selective Measurement
Courtesy of GENERAL MOTORS CORP.

TORQUE CONVERTER HOUSING WITH FLUID PUMP ASSEMBLE

Callout

Component Name

1

Pump Rotor Cavity
Tip: Measure the distance from the bottom of the
gage bar to the bottom of the pump rotor cavity.
Refer to Fluid Pump Selective Specifications .

2

A/Trans Fluid Pump Rotor
Tip: Refer to Fluid Pump Selective
Specifications to select the correct rotor.

3

A/Trans Fluid Pump Slide
Tip: Refer to Fluid Pump Selective
Specifications to select the correct slide.

2008 Chevrolet Silverado 1500

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

Sierra & Silverado

Fig. 174: Torque Converter Housing with Fluid Pump Assemble
Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

1

Fluid Pump Slide Fluid Seal Ring

2

Fluid Pump Slide (O-Ring) Seal

3

Fluid Pump Slide Pivot Pin

4

Fluid Pump Slide Seal Support
Tip: The seal support is circular. The seal is
rectangular.

5

Slide Seal

6

Fluid Pump Slide
Tip: If installing a NEW pump slide into the torque
converter housing, ensure to properly select the
correct rotor and slide before performing this
procedure. Refer to Fluid Pump Selective
Measurement and Fluid Pump Selective
Specifications .

7

Fluid Pump Slide Outer Spring

8

Fluid Pump Vane Ring

2008 Chevrolet Silverado 1500

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

Sierra & Silverado