GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Captiva Sport 🢒 Transmission 🢒 Automatic Transmission - 4T45-E 🢒 Intermediate/Fourth Servo Assemble and Installation

    Object Number: 1778405 Size: SH
  1. Install the servo cushion spring (68), or springs (139), and the servo piston (77) onto the servo pin (76).
  2. Install the snap ring (70) onto the servo pin (76) in order to retain the springs (68) and piston (77).
  3. Install the new seals (78 and 79) onto the servo piston (77) and the servo cover (80).
  4. Install the servo piston assembly into the servo cover (80). Lubricate the piston seals with transmission fluid in order to aid in assembly.

    5. Object Number: 20168 Size: SH
  5. Install the servo return spring (75) into the transmission case (51).
  6. Install the servo cover (80) and the piston assembly over the servo return spring (75).

    7. Notice: Hand tighten servo bolts to prevent bore damage.

    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.

  7. Install the three servo cover bolts (25). Hand start the bolts.

    8. Tighten
    Tighten the bolts to 12 N·m (9 lb ft).


    Object Number: 1778405 Size: SH
  1. Install the servo cushion spring (68), or springs (139), and the servo piston (77) onto the servo pin (76).
  2. Install the snap ring (70) onto the servo pin (76) in order to retain the springs (68) and piston (77).
  3. Install the new seals (78 and 79) onto the servo piston (77) and the servo cover (80).
  4. Install the servo piston assembly into the servo cover (80). Lubricate the piston seals with transmission fluid in order to aid in assembly.

    5. Object Number: 20168 Size: SH
  5. Install the servo return spring (75) into the transmission case (51).
  6. Install the servo cover (80) and the piston assembly over the servo return spring (75).

    7. Caution: Refer to Fastener Caution in the Preface section.

    Caution: Hand tighten servo bolts to prevent bore damage.

  7. Install the three servo cover bolts (25). Hand start the bolts. Tighten the bolts to 12 N·m (9 lb ft).