Chevrolet Silverado / GMC Sierra. Manual — part 976
Fig. 459: Locating Clutch Piston Assembly
Courtesy of GENERAL MOTORS CORP.
1. Position the transmission case so that the rear of the case is facing up.
2. Apply J 36850 or an equivalent lubricant to the inside and outside diameters of the new 2-6
clutch piston assembly (1). See Special Tools.
3. Align the new 2-6 clutch piston assembly (1) so that the seal is facing down and the 1.016
mm (0.040 in) lubrication/cooling orifice is positioned at the top of the transmission case.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
4. Install the 2-6 clutch piston assembly (1).
5. Gently tap the piston until the piston seats.
Fig. 460: View Of Input Internal Ring Gear
Courtesy of GENERAL MOTORS CORP.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
6. Align the input internal ring gear (1) so that the outside splines are facing down.
7. Install the input internal ring gear (1).
8. Rotate the ring gear until the 3rd, 5th, and reverse fiber plates are engaged.
9. Make sure the input internal ring gear (1) is seated against the thrust plates of the 3rd, 5th,
and reverse clutch backing plate assembly.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 461: Locating Input Carrier Module & Thrust Bearing
Courtesy of GENERAL MOTORS CORP.
10. Install the input carrier module (2).
11. Rotate the input carrier module until the module drops into place.
12. Align the thrust bearing (1) so that the blue stripe on the thrust bearing is facing away from
the input carrier module (2).
13. Install the thrust bearing (1) onto the input carrier module (2).
NOTE:
Installing the thrust bearing incorrectly may cause permanent
damage to the transmission.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
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