GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1996 🢒 Monte Carlo 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T60-E 🢒 Case Extension Replacement

Removal Procedure
  1. Remove the air cleaner.
  2. Remove the duct.
  3. On the 3.4L engine, remove the generator. Refer to Generator Replacement in Engine Electrical.
  4. On the 3.4L engine, remove the generator mounting bracket. Refer to Generator Rear Bracket Replacement in Engine Electrical.
  5. Refer to Wheel Removal in Tires and Wheels in order to remove the left tire.
  6. Remove the powertrain rear mount.
    7. • For the 3.1L engine, refer to Engine Mount Replacement in Engine Mechanical.
    • For the 3.4L engine, refer to Engine Mount Replacement and Engine Mount Replacement in Engine Mechanical.
    • For the 3.8L engine, refer to Engine Mount Replacement in Engine Mechanical.
  7. Remove the powertrain rear bracket.
    8. • For the 3.1L engine, refer to Engine Mount Replacement in Engine Mechanical.
    • For the 3.4L engine, refer to Engine Mount Bracket Replacement and Engine Mount Bracket Replacement in Engine Mechanical.
    • For the 3.8L engine, refer to Engine Mount Bracket Replacement in Engine Mechanical.
  8. Remove the vehicle speed sensor. Refer to DTC P0602 Control Module Not Programmed .

    9. Object Number: 99929 Size: SH
  9. Remove the case extension housing bolts.
  10. Remove the case extension housing.
  11. Remove the O-ring.
  12. Remove the axle seal.

Installation Procedure

    Object Number: 99929 Size: SH
  1. Install the case extension housing.
  2. Install the axle seal.
  3. Install the O-ring.
  4. Install the case extension housing bolts.

    5. Tighten
    Tighten the bolts to 43 N·m (32 lb ft).

    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.

  5. Install the vehicle speed sensor. Refer to Vehicle Speed Sensor Replacement .
  6. Remove the powertrain rear mount.
    7. • For the 3.1L engine, refer to Engine Mount Replacement in Engine Mechanical.
    • For the 3.4L engine, refer to Engine Mount Replacement and Engine Mount Replacement in Engine Mechanical.
    • For the 3.8L engine, refer to Engine Mount Replacement in Engine Mechanical.
  7. Remove the powertrain bracket.
    8. • For the 3.1L engine, refer to Engine Mount Replacement in Engine Mechanical.
    • For the 3.4L engine, refer to Engine Mount Bracket Replacement and Engine Mount Bracket Replacement in Engine Mechanical.
    • For the 3.8L engine, refer to Engine Mount Bracket Replacement in Engine Mechanical.
  8. Refer to Wheel Removal in Tires and Wheels in order to install the left tire.
  9. On the 3.4L engine, install the generator mounting bracket. Refer to Generator Rear Bracket Replacement in Engine Electrical.
  10. On the 3.4L engine, install the generator. Refer to Generator Replacement in Engine Electrical.
  11. Install the air cleaner.
  12. Install the duct.