GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the front differential carrier shield, if equipped. Refer to Engine Protection Shield Replacement .
  3. Important: Make note of the routing in order to aid in reassembly.

  4. Remove the vent hose (1) from the wiring bundle.
  5. Remove the vent hose from the clip.

  6. Object Number: 865993  Size: SH
  7. Remove the vent hose (1) from the differential carrier case assembly (2).
  8. Remove the vent hose (1) from the vehicle.

Installation Procedure


    Object Number: 865993  Size: SH
  1. Install the vent hose (1) to the vehicle.
  2. • Route the vent hose the same way as when removed.
    • Ensure the hose is free of kinks and routes clear of sharp components.
    • Ensure the vent hose is not plugged.
  3. Connect the vent hose (1) to the differential carrier case assembly (2).
  4. Install the vent hose (1) to the wiring bundle.
  5. Install the vent hose to the clip.
  6. Install the front differential carrier shield, if equipped. Refer to Engine Protection Shield Replacement .
  7. Lower the vehicle.