GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2000 🢒 Century (China) 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Accumulator and 2-1 Manual Servo Replacement

Removal Procedure
  1. Raise and support the vehicle.
  2. Remove the oil pan. Refer to Oil Pan Replacement .
  3. Remove the filter. Refer to Automatic Transmission Fluid Filter and Seal Replacement .

    4. Object Number: 164809 Size: SH
  4. Remove the accumulator attaching bolts (131).
  5. Remove the manual 2-1 band servo cover bolts (103).

    6. Object Number: 164810 Size: SH
  6. Remove the accumulator (132).
  7. Remove the manual 2-1 band servo cover (104).

    8. Object Number: 164811 Size: SH
  8. Remove the manual 2-1 band servo (106-116).
  9. To disassemble, inspect and service the accumulator and 2 - 1 manual servo, refer to Transmission/Transaxle/Transfer Case Unit Repair Manual.

Installation Procedure

    Object Number: 164811 Size: SH
  1. Install the manual 2-1 band servo (106-116).
  2. Install the manual 2-1 band servo cover (104).

    3. 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.

  3. Install the manual 2-1 band servo cover bolts (103).

    4. Tighten
    Tighten the manual 2-1 band servo cover bolts (103) to 24 N·m (17 lb ft).


    Object Number: 164810 Size: SH
  4. Install the accumulator (132).

    5. Object Number: 164809 Size: SH
  5. Install the accumulator attaching bolts (131).

    6. Tighten
    Tighten the accumulator attaching bolts (131) to 11 N·m (97 lb in).

  6. If removed, install the new filter seal.
  7. Install the filter. Refer to Automatic Transmission Fluid Filter and Seal Replacement .
  8. Install the oil pan. Refer to Oil Pan Replacement .
  9. Lower the vehicle.