Chevrolet Silverado / GMC Sierra. Service manual — part 2845
TRANSFER CASE ADAPTER REPLACEMENT
4. Remove the front propeller shaft. Refer to Front Propeller Shaft Replacement .
5. Drain the fluid from the transfer case. Refer to Transfer Case Fluid Replacement.
6. Disconnect the electrical connectors and remove the electrical harness from the
transfer case.
7. Disconnect the shift control rod from the transfer case. Refer to Transfer Case
Control Rod Replacement.
8. Remove the crossmember. Refer to Transmission Support Crossmember
Replacement (2WD 2500 HD/3500) or Transmission Support Crossmember
Replacement (2WD 1500/2500) or Transmission Support Crossmember
Replacement (4WD 1500/2500) or Transmission Support Crossmember
Replacement (4WD 2500 HD/3500) .
9. Remove the transmission mount. Refer to Transmission Mount Replacement
(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, or Transmission Mount Replacement for the Allison automatic
transmission.
1
Transfer Case Nut
Tighten: 50 N.m (37 lb ft)
NOTE:
Refer to Fastener Notice .
2
Fuel Line Bracket
3
Transfer Case
4
Transfer Case Gasket
Tip: Install a NEW gasket without the use of any type of sealant or lubricant.
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1222/1225/1226-NQG - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 17: 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
(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, or Transmission Mount Replacement for the Allison automatic
transmission.
1
Transfer Case Adapter Bolt
Tighten: 50 N.m (37 lb ft)
NOTE:
Refer to Fastener Notice .
2
Transfer Case Adapter
Transfer Case Adapter Seal
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1222/1225/1226-NQG - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
INPUT SHAFT SEAL REPLACEMENT
Fig. 18: View Of Transfer Case, Input Shaft Seal & Nuts
Courtesy of GENERAL MOTORS CORP.
3
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.
Callout
Component Name
Preliminary Procedures:
Remove the transfer case. Refer to Transfer Case Assembly Replacement.
1
Transfer Case Nuts
Tip: Use transfer case nuts to secure transfer case to assembly fixture J 45759 .
Special Tools:
J 45759 Assembly Fixture
2
Transfer Case
Tip: Insert the transfer case and assembly fixture into the bench holding fixture
J 3289-20 and secure with pivot pin.
Special Tools:
J 3289-20 Holding Fixture
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1222/1225/1226-NQG - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
REPAIR INSTRUCTIONS - OFF VEHICLE
TRANSFER CASE DISASSEMBLE
Transfer Case Holding Fixture Installation
3
Transfer Case Input Shaft Seal
Procedure
1. Remove the seal using a flat-bladed tool.
2. Install the seal using J 42738 .
Special Tools:
J 42738 Seal Installer
2008 Chevrolet Silverado 1500
2008 TRANSMISSION Transfer Case - MP 1222/1225/1226-NQG - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
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