GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Optra 🢒 Transmission/Transaxle 🢒 Automatic Transmission - ZF 4HP 16 🢒 Control Valve Body Replacement

Tools Required

DT 46475 (DW260-070) Auto Transaxle Oil Plug Remover/Installer

Removal Procedure

    Caution: Refer to Battery Disconnect Caution in the Preface section.


    Object Number: 1290953 Size: SH
  1. Disconnect the negative battery cable.
  2. Disconnect the transaxle wiring harness and disconnect the electrical connector from the park/neutral position (PNP) switch.

    3. Notice: Refer to Vehicle Lifting and Jacking Notice in the Preface section.


    Object Number: 1255915 Size: SH
  3. Raise and suitable support the vehicle.
  4. Remove the engine cover. Refer to Engine Cover Replacement in Frame and Underbody.
  5. Using DT 46475  (1), remove the transaxle fluid drain plug. Drain the transaxle fluid.

    6. Object Number: 1255959 Size: SH
  6. Remove the oil pan and the oil pan gasket. Refer to Automatic Transmission Fluid Pan and Gasket Removal .
  7. Remove the valve body mounting bolts.
  8. Remove the mounting bolt from the A/T input speed sensor.

    9. Object Number: 1255960 Size: SH
  9. Remove the mounting bolts from the A/T output speed sensor.

    10. Object Number: 1255962 Size: SH
  10. Remove the control valve body.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.

    Important: After installing the transmission assembly, the shift adapts must be reset. reset the shift adapts using the scan tool. Go to "Trans Adaptives Reset" under "Special Functions" on the scan tool.


    Object Number: 1255959 Size: SH
  1. Install the control valve body and the mounting bolts.

    2. Tighten
    Tighten the bolts to 8 N·m (71 lb in).

  2. Install the mounting bolt to the input speed sensor.

    3. Tighten
    Tighten the bolt to 8 N·m (71 lb in).


    Object Number: 1255960 Size: SH
  3. Install the mounting bolt to the output speed sensor.

    4. Tighten
    Tighten the bolt to 6 N·m (53 lb in).

  4. Install the oil pan and the oil pan gasket. Refer to Automatic Transmission Fluid Pan and Gasket Installation .

    5. Object Number: 1255915 Size: SH
  5. Using DT 46475  (1), install the transaxle fluid drain plug.
  6. Install the engine cover. Refer to Engine Cover Replacement in Frame and Underbody.

    7. Object Number: 1290953 Size: SH
  7. Lower the vehicle.
  8. Connect the transaxle wiring harness and connect the electrical connector from the PNP switch.
  9. Refill the transaxle fluid. Refer to Transmission Fluid Level Inspection .
  10. Connect the negative battery cable.

    11. Important: After installing the transmission assembly, the shift adapts must be reset. reset the shift adapts using the scan tool. Go to "Trans Adaptives Reset" under "Special Functions" on the scan tool.