Chevrolet Silverado / GMC Sierra. Service manual — part 935

Fig. 318: Correct Installation Position Of 1-2-3-4 Clutch Thrust Bearing Assembly
Courtesy of GENERAL MOTORS CORP.

69. Align the thrust bearing assembly (2) so that the blue stripe on the thrust bearing assembly is

NOTE:

Installing the thrust bearing assembly onto the rear of the 1-2-
3-4 drive hub in the wrong direction may cause permanent
damage to the transmission. The blue stripe must be visible.

2008 Chevrolet Silverado 1500

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

Silverado

facing away from the 1-2-3-4 clutch drive hub (3).

70. Install the thrust bearing assembly (2) onto the rear of the 1-2-3-4 clutch drive hub (3).

71. Make sure the blue stripe on the thrust bearing assembly is visible.

72. Align the 4-5-6 clutch drive hub (1) so that the smaller end is facing up.

73. Install the 4-5-6 clutch drive hub (1).

Fig. 319: Illustrating Stacking Sequence Of 4-5 Clutch Steel & Fiber Plates
Courtesy of GENERAL MOTORS CORP.

74. Starting with a 4-5-6 clutch steel plate, alternately install seven 4-5-6 clutch steel plates (2)

and six 4-5-6 clutch fiber plates (1) into the 1-2-3-4, 4-5-6 clutch housing.

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 320: Identifying Bronze Thrust Washer With Holes
Courtesy of GENERAL MOTORS CORP.

75. Align the tangs of the bronze thrust washer (1) with the holes in the 4-5-6 clutch drive hub

(2).

76. Install the bronze thrust washer (1) onto the 4-5-6 clutch drive hub (2).

2008 Chevrolet Silverado 1500

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

Silverado

Fig. 321: View Of 1-2-3-4, 4-5 Clutch Housing Components
Courtesy of GENERAL MOTORS CORP.

77. Align the input sun gear (3) so that the gear teeth of the sun gear face the concave face of the

input sun gear flange (2).

78. Install the input sun gear (3) into the input sun gear flange (2).

79. Make sure the splines are engaged.

80. Hold the sun gear and align the double wide splines of the input sun gear flange (2) with the

double wide spaces on the 1-2-3-4, 4-5-6 clutch housing (4).

2008 Chevrolet Silverado 1500

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

Silverado