Chevrolet Silverado / GMC Sierra. Manual — part 916
1. Position the oil pump assembly (2) on the work table so that the rear of the pump is facing
up.
2. Align the locating pin holes in the torque converter housing to case channel plate (1) with
the locating pins (3) in the oil pump assembly (2).
3. Make sure the bolt holes in the torque converter housing to case channel plate (1) align with
the bolt holes in the oil pump assembly (2).
4. Install the torque converter housing to case channel plate (1) onto the oil pump assembly
(2).
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 258: Locating Oil Pump Cover Assembly Components
Courtesy of GENERAL MOTORS CORP.
5. Position the oil pump cover assembly (5) on the work table so that the stator shaft (4) is
facing up.
6. Align, as a unit, the oil pump assembly (1) and the torque converter housing to case channel
plate (3) so that the following conditions are met:
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Oil pump locating pins (2) align with the holes in the oil pump cover assembly (5).
The oil pump assembly bolt holes align with the bolt holes of the oil pump cover
assembly.
7. Install, as a unit, the oil pump assembly (1) and the torque converter housing to case channel
plate (2) onto the oil pump cover assembly (5).
8. Install 5 bolts (6).
Tighten: Tighten the bolts to 27 N.m (20 lb ft)
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 259: Identifying Overlap Seal Rings, Stator Shaft, Rear Hub and Thrust
Washer
Courtesy of GENERAL MOTORS CORP.
9. Align the tangs of the thrust washer (5) with the slots at the base of the oil pump cover
assembly rear hub.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Automatic Transmission - Allison - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
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