Chevrolet Silverado / GMC Sierra. Manual — part 2812
Tighten: Tighten the bolts to 70 N.m (52 lb ft).
Fig. 23: Identifying Transmission Mount Nuts
Courtesy of GENERAL MOTORS CORP.
12. Install the transmission mount nuts and bolts.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Tighten: Tighten the nuts and bolts to 40 N.m (30 lb ft).
13. Remove the jack stand from the transmission.
14. Install the front propeller shaft. Refer to Front Propeller Shaft Replacement .
15. Install the rear propeller shaft. Refer to One-Piece Propeller Shaft Replacement or Two-
Piece Propeller Shaft Replacement .
16. Fill the transfer case with fluid.
17. Install the transfer case shield, if equipped. Refer to Transfer Case Shield Replacement.
18. Lower the vehicle.
TRANSFER CASE ADAPTER REPLACEMENT
Fig. 24: View Of Transfer Case Adapter, Seal & Bolt
Courtesy of GENERAL MOTORS CORP.
Callout
Component Name
Preliminary Procedures
1. Remove the transfer case. Refer to Transfer Case Assembly Replacement.
2. Remove the transmission mount. Refer to Transmission Mount Replacement
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
INPUT SHAFT SEAL REPLACEMENT
Tools Required
J 36825 Output Shaft Oil Seal Remover
J 23907 Slide Hammer with Bearing Adapter
J 42738 Front Output Shaft Seal Installer. See Special Tools.
Removal Procedure
(2WD) or Transmission Mount Replacement (4WD) for the 4L60-E/4L65-
E/4L70-E automatic transmission, or Transmission Mount Replacement (2WD) or
Transmission Mount Replacement (4WD) for the 6L50/6L80/6L90 automatic
transmission.
1
Transfer Case Adapter Bolt
Tighten: 50 N.m (37 lb ft)
NOTE:
Refer to Fastener Notice .
2
Transfer Case Adapter
3
Transfer Case Adapter Seal
Tip: Always use a new seal for the adapter. Do not use any type of sealant or
adhesive in place of or with the seal.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Fig. 25: View Of Input Seal Removal Special Tools
Courtesy of GENERAL MOTORS CORP.
1. Remove the transfer case. Refer to Transfer Case Assembly Replacement.
2. Using the J 23907 (1), and J 36825 (2), remove the input seal.
Installation Procedure
IMPORTANT: It may be necessary to use a sharp punch in order to poke a
hole into the seal prior to inserting J 36825 .
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
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