Chevrolet Silverado / GMC Sierra. Manual - part 917
10. Install the thrust washer (5) onto the oil pump cover assembly. The thrust washer snaps into
place.
11. Install 3 new overlap seal rings (6) onto the oil pump cover assembly rear hub.
12. Install a new overlap seal ring (2) onto the middle of the stator shaft (3).
13. Install a new overlap seal ring (1) onto the front of the stator shaft (3).
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 260: Converter Housing, Oil Pump Cover Module, Channel Plate And Gasket
Courtesy of GENERAL MOTORS CORP.
14. Position the oil pump cover module (5) on the work table so that the stator shaft is facing
up.
15. Align the bolt holes of the torque converter housing to case channel plate gasket (2) with the
bolt holes in the torque converter housing to case channel plate (4).
16. Apply J 36850 or an equivalent lubricant to the gasket face nearest the torque converter
housing to case channel plate. See Special Tools.
17. Install the gasket onto the torque converter housing to case channel plate.
18. Apply J 36850 or an equivalent lubricant onto the outside diameter (OD) of the oil pump
assembly (3). See Special Tools.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 261: View Of Guide Bolts And Oil Pump Cover Module
Courtesy of GENERAL MOTORS CORP.
19. Install 2 M10 x 1.5 guide bolts (2) into the oil pump cover module (3).
20. Align the converter housing bolt holes with the bolt holes in the oil pump cover module.
21. Install the converter housing onto the guide bolts and onto the oil pump cover module.
22. Remove the guide bolts from the oil pump cover module.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 262: Identifying Bolt Seals
Courtesy of GENERAL MOTORS CORP.
23. Inspect the bolt seals (2) for nicks or other damage. Replace damaged seals.
24. Install seals (2) onto 10 bolts (1).
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado