Chevrolet Silverado / GMC Sierra. Service manual — part 844

1. Remove the transmission from the vehicle. Refer to Transmission Replacement.

2. Install J 21366 to restrain the torque converter.

3. Install J 44723 . Refer to Holding Fixture Installation.

4. Position the transmission vertically with the torque converter end up.

5. Remove J 21366 torque converter retaining bracket.

Fig. 20: Installing J 46409 Into Torque Converter Lugs
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

6. Measure from the mounting lugs to the transmission mounting face.

7. Install J 46409 180 degrees apart into 2 lugs on the front of the torque converter. See

Special Tools.

8. Lift the torque converter free of the transmission and place it on the work table.

9. Remove the lifting handles.

Installation Procedure

IMPORTANT: The distance from the torque converter mounting lugs to the

transmission mounting face is an important measurement. It
is required to check correct reassembly of the torque
converter.

CAUTION: Avoid personal injury or property damage when removing

or installing the torque converter by seeking an assistant
to help lift the torque converter.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Fig. 21: Installing J 46409 Into Torque Converter Lugs
Courtesy of GENERAL MOTORS CORP.

1. Lubricate the converter pump hub OD and the torque converter seal with clean transmission

fluid.

2. Install J 46409 180 degrees apart into 2 lugs on the front of the torque converter. See

Special Tools.

CAUTION: Avoid personal injury or property damage when removing

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

3. Lift the torque converter into the transmission.

4. Spin the torque converter to engage the turbine shaft splines in the torque converter hub, the

stator shaft splines in the stator race and to engage the drive flats on the converter pump hub
with the oil pump drive gear.

5. The torque converter is correctly installed when the distance from the lugs to the mounting

face is the same as when measured before removing the torque converter.

Fig. 22: Torque Converter Restraining Device
Courtesy of GENERAL MOTORS CORP.

6. Install J 21366 .

7. Reinstall the transmission into the vehicle. Refer to Transmission Replacement.

or installing the torque converter by seeking an assistant
to help lift the torque converter.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado