Chevrolet Silverado / GMC Sierra. Service manual — part 2812

8. Install the transfer case adapter nuts.

Tighten: Tighten the nuts to 50 N.m (37 lb ft).

9. Install the transmission mount.

Fig. 22: Identifying Crossmember & Bolts
Courtesy of GENERAL MOTORS CORP.

10. Position the crossmember.

11. Install the crossmember bolts.

NOTE:

Refer to Fastener Notice .

IMPORTANT: Ensure that the gasket is flush to the transmission prior to

installing the nuts.

2008 Chevrolet Silverado 1500

2008 TRANSMISSION Transfer Case - BW 4485-NR3 - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

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