GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2003 🢒 CTS - RHD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 5L40-E 🢒 Case Extension and Gasket Replacement

Removal Procedure

    Object Number: 822505 Size: SH
  1. 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 in Frame and Underbody.
  4. Place an drain pan under the extension housing.

    5. Object Number: 801792 Size: SH
  5. Remove the extension housing bolts (35).
  6. The output shaft retainer will slide off the output shaft while removing the case extension housing.
  7. Remove the extension housing (27) and the seal (25).

Installation Procedure

    Object Number: 830379 Size: SH
  1. Install the output shaft thrust washer to the back side of the case extension housing prior to installing of the case extension housing. Align the thrust washer tabs with the locating slots on the case 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 the 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. Install the transmission support. Refer to Transmission Support Replacement in Frame and Underbody.
  5. Remove the transmission jack.

    6. Object Number: 822505 Size: SH
  6. Install the drive flange (2) and seal (3). Refer to Drive Flange and Seal Replacement .