GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Silhouette 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T60-E 🢒 Forward Servo Replacement

Removal Procedure
  1. Disconnect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Remove the engine mount struts. Refer to Engine Mount Strut Replacement in Engine Mechanical.
  3. Install the engine support fixture. Refer to Engine Support Fixture .
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Disconnect the three-way catalytic converter pipe from the right (rear) exhaust manifold. Refer to Catalytic Converter Replacement in Engine Exhaust.
  6. Remove the transaxle mount lower nuts. Refer to Transmission Mount Replacement .
  7. Remove the engine mount lower nuts. Refer to Engine Mount Replacement in Engine Mechanical.
  8. Lower the vehicle.
  9. Using the J 28467-34 , raise the left (front) and lower the right (rear) of the engine in order to obtain clearance between the forward servo cover and the frame. Refer to Engine Support Fixture .
  10. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  11. Position a drain pan under the forward servo cover.

    12. Object Number: 262608 Size: SH
  12. Remove the bolts (12) attaching the servo cover (13) to the transaxle case.
  13. Remove the forward servo cover (13).
  14. Remove the forward servo cover O-ring (14).
  15. Remove the forward servo piston assembly (15-21).
  16. Remove the forward servo spring (22).
  17. For information on the disassembly and inspection of the forward servo piston assembly (15-21), refer to the Transmission/Transaxle/Transfer Case Unit Repair Manual.

Installation Procedure

    Object Number: 262608 Size: SH
  1. Install the forward servo spring (22).
  2. Install the forward servo piston assembly (15-21).
  3. Install the forward servo cover O-ring (14).
  4. Install the forward servo cover (13).

    5. 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 forward servo cover attaching bolts (12).

    6. Tighten
    Tighten the forward servo cover attaching bolts (12) to 11 N·m (97 lb in).

  6. Lower the vehicle.
  7. Using the J 28467-34 , lower the left (front) and raise the right (rear) of the engine. Refer to Engine Support Fixture .
  8. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  9. Install the engine mount lower nuts. Refer to Engine Mount Replacement in Engine Mechanical.
  10. Install the transaxle mount lower nuts. Refer to Transmission Mount Replacement .
  11. Connect the three-way catalytic converter pipe to the right (rear) exhaust manifold. Refer to Catalytic Converter Replacement in Engine Exhaust.
  12. Lower the vehicle.
  13. Remove the engine support fixture. Refer to Engine Support Fixture .
  14. Install the engine mount struts. Refer to Engine Mount Strut Replacement in Engine Mechanical.
  15. Connect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.