Removal Procedure
- Raise the vehicle. Refer to
Lifting and Jacking the Vehicle
- Remove the front propeller shaft. Refer to
Front Propeller Shaft Replacement
in Propeller Shaft.
- Remove the rear propeller shaft. Refer to
One-Piece Propeller Shaft Replacement
or to
Two-Piece Propeller Shaft Replacement
in Propeller Shaft.
- Remove
the vent hose from the transfer case.
- Disconnect the vehicle speed sensor electrical connectors.
- Remove the electrical connectors from the transfer case motor/encoder.
- Remove any wiring harness from the transfer case.
- Support the transfer case with a transmission jack.
- If equipped with a manual transmission,
remove the bolt securing the left side support brace to the transmission.
- If equipped with a manual transmission,
remove the bolt and stud securing the left side support brace to the transfer
case.
- If equipped with a manual transmission,
remove the two bolts securing the right side support brace to the transmission
and transfer case.
- For vehicles equipped with a manual transmission,
remove the six nuts securing the transfer case and bracket to the transmission.
- 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. |
- For vehicles equipped with a automatic
transmission, remove the six nuts securing the transfer case and bracket to the
transmission adaptor.
- 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. |
- Remove and discard the gasket.
Installation Procedure
- Install a new gasket to the transmission. Use sealer GM P/N 12346004
in order to hold the gasket in place.
- Raise and position the transfer case to the vehicle
Notice: Refer to Fastener Notice in the Preface section.
- For vehicles equipped with a automatic transmission, install the six nuts
securing the transfer case and bracket to the transmission adaptor.
Tighten
Tighten the nuts to 47 N·m (35 lb ft).
- For vehicles equipped with a manual transmission,
install the six nuts securing the transfer case and bracket to the transmission.
Tighten
Tighten the nuts to 47 N·m (35 lb ft).
- If equipped with a manual transmission,
install the bolt securing the left side support brace to the transmission.
Tighten
Tighten the bolt to 47 N·m (35 lb ft).
- If equipped with a manual transmission,
install the bolt and stud securing the left side support brace to the transfer
case.
Tighten
Tighten the bolt and stud to 47 N·m (35 lb ft).
- If equipped with a manual transmission,
install the two bolts securing the right side support brace to the transmission
and transfer case.
Tighten
Tighten the bolts to 47 N·m (35 lb ft).
- Install
the vent hose to the transfer case.
- Inspect the transfer case oil level. Refer to
Oil Replacement
- Connect the speed sensor electrical connectors.
- Install the electrical connectors to the transfer case motor/encoder.
- Install any wiring harness to the transfer case.
- Install the rear propeller shaft. Refer to
One-Piece Propeller Shaft Replacement
or to
Two-Piece Propeller Shaft Replacement
in Propeller Shaft.
- Install the front propeller shaft. Refer to
Front Propeller Shaft Replacement
in Propeller Shaft.
- Lower the vehicle.