Chevrolet Silverado / GMC Sierra. Service manual — part 933

48. Make sure the retaining ring (1) is seated completely around the turbine shaft (3).

Fig. 313: Identifying Stacking Sequence Of Clutch Plates
Courtesy of GENERAL MOTORS CORP.

49. Starting with a 1-2-3-4 clutch steel plate, alternately install 6 1-2-3-4 clutch steel plates (2)

and 6 1-2-3-4 clutch fiber plates (1) onto the turbine shaft (3).

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 314: Installing J44525 Onto Turbine Shaft
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Special tools J 44525-4 selector tool (4) and J 44525-5

pressure plate (3) are silver plated for easy identification. Do

2008 Chevrolet Silverado 1500

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

Silverado

50. Align J 44525-5 pressure plate (3) with the turbine shaft so that the countersunk holes of J

44525-5 pressure plate (3) are facing up.

51. Install J 44525-5 pressure plate (3) onto the turbine shaft.

52. Align J 44525-1 compressor (2) with the turbine shaft so that the inner ridge of J 44525-1

compressor (2) is facing down.

53. Slide the inner ridge of J 44525-1 compressor (2) into the turbine shaft retaining ring

groove.

54. Align the holes in J 44525-1 compressor (2) with the countersunk holes of J 44525-5

pressure plate (3).

55. Hand install 2 bolts (1) of J 44525 into the holes of J 44525-1 compressor (2). See Special

Tools.

Tighten: Tighten the bolts to 1.8 N.m (16 lb in).

not use the pressure plate and selector tool from the J 44525
set if they are not matched in color. See Special Tools.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 315: Using J 44525 To Select Correct 1-2-3-4 Clutch Backing Plate
Courtesy of GENERAL MOTORS CORP.

56. Perform the following procedure for each tab of J 44525-4 selector tool (1):

1. Place the flat surface, tabbed end of J 44525-4 selector tool (1) onto the top surface of

J 44525-5 pressure plate (3).

IMPORTANT: The shift quality of the transmission depends heavily upon

selecting the correct 1-2-3-4 clutch backing plate.

2008 Chevrolet Silverado 1500

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

Silverado