GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1997 🢒 Regal 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Case Extension Replacement

Removal Procedure
  1. Remove the transaxle brace. Refer to Transmission Brace Replacement .
  2. Remove the vehicle speed sensor. Refer to Vehicle Speed Sensor Replacement .

    3. Object Number: 10517 Size: SH
  3. Remove the case extension housing bolts.
  4. Remove the case extension housing with the O-ring and with the axle seal.

Installation Procedure

    Object Number: 10517 Size: SH
  1. Install the case extension housing with the axle seal and with the O-ring.
  2. Install the case extension housing bolts.

    3. Tighten
    Tighten the case extension housing bolts to 36 N·m (27 lb ft). Refer to

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    in General Information.

  3. Install the vehicle speed sensor. Refer to Vehicle Speed Sensor Replacement .
  4. Install the transaxle brace. Refer to Transmission Brace Replacement .

    5. Notice: Do NOT overfill the transaxle. The overfilling of the transaxle causes foaming, loss of fluid, shift complaints, and possible damage to the transaxle.

  5. Adjust the fluid level.
  6. Inspect for completion of the repairs.
  7. Inspect for fluid leaks.