GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2005 🢒 STS 🢒 General Information 🢒 General Information 🢒 Case Extension and Gasket Replacement

Removal Procedure

    Object Number: 822505 Size: SH
  1. If equipped with rear wheel drive (RWD), remove the drive flange (2) and seal (3). Refer to Drive Flange and Seal Replacement .
  2. Place a suitable jack under the transmission pan in order to support the transmission.
  3. Remove the transmission support. Refer to Transmission Support Replacement .
  4. If equipped with all wheel drive (AWD), remove the transfer case. Refer to Transfer Case Assembly Replacement .
  5. Place a drain pan under the extension housing.

    6. Object Number: 801792 Size: SH
  6. Remove the extension housing bolts (35).
  7. Remove the extension housing (27) and seal (25).
  8. If equipped with AWD, remove the seal from the extension housing.

Installation Procedure
  1. If equipped with AWD, install a NEW seal to the extension housing.

    2. Object Number: 801792 Size: SH

    Important: The case extension gasket seal is reusable. Replace the gasket ONLY if the sealing surface is damaged.

  2. Install the extension housing (27) and seal (25).

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the extension housing bolts (35).

    4. Tighten
    Tighten the bolts to 22 N·m (16 lb ft).

  4. If equipped with AWD, install the transfer case. Refer to Transfer Case Assembly Replacement .
  5. Install the transmission support. Refer to Transmission Support Replacement .
  6. Remove the transmission jack.

    7. Object Number: 822505 Size: SH
  7. If equipped with RWD, install the drive flange (2) and seal (3). Refer to Drive Flange and Seal Replacement .