Download 2000 Chevy Truck S10/T10 Blazer 4WD V6-4.3L VIN W Vehicle Level Transmission and Drivetrain Transfer Case Service and Repair NVG 233/243-NP1 Transfer Case Replacement. Removal Procedure 1. Raise the vehicle. Refer to Vehicle Lifting. 2. Remove the front propeller shaft. Refer to Propeller Shaft Replacement- Front. 3. Remove the rear propeller shaft. Refer to Propeller Shaft Replacement-Rear. 4. Remove the vent hose from the transfer case. 5. Disconnect the vehicle speed sensor electrical connectors. 6. Remove the electrical connectors from the transfer case motor/encoder. 7. Remove any wiring harness from the transfer case. 8. Support the transfer case with a transmission jack. 9. If equipped with a manual transmission, remove the bolt securing the left side support brace to the transmission. 10. If equipped with a manual transmission, remove the bolt and stud securing the left side support brace to the transfer case. 11. If equipped with a manual transmission, remove the two bolts securing the right side support brace to the transmission and transfer case. 12. For vehicles equipped with a manual transmission, remove the six nuts securing the transfer case and bracket to the transmission. 13. Remove the transfer case. * Start by pulling the transfer case straight back from the transmission. * After the transfer case is pulled out from the transmission turn and lower the transfer case. 14. For vehicles equipped with a automatic transmission, remove the six nuts securing the transfer case and bracket to the transmission adapter. 15. Remove the transfer case. * Start by pulling the transfer case straight back from the transmission. * After the transfer case is pulled out from the transmission turn and lower the transfer case. 16. Remove and discard the gasket. Installation Procedure 1. Install a new gasket to the transmission. Use sealer GM P/N 12346004 in order to hold the gasket in place. 2. Raise and position the transfer case to the vehicle Notice: Refer to Fastener Notice in Service Precautions.