GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Epica 🢒 Transmission/Transaxle 🢒 Automatic Transmission - ZF 4HP 16 🢒 Control Valve Body Replacement

Tools Required

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

Removal Procedure

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


    Object Number: 1255924 Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the air filter housing.
  3. Disconnect the transaxle wiring harness and the park/neutral position switch electrical connector.

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


    Object Number: 1255915 Size: SH
  4. Raise and suitably support the vehicle.
  5. Remove the engine under cover. Refer to Engine Cover Replacement in Frame and Underbody.
  6. Use the DT 46475 (1) to remove the transaxle fluid drain plug.

    7. Object Number: 1255959 Size: SH
  7. Remove the oil pan and the oil pan gasket. Refer to Automatic Transmission Fluid Pan and Gasket Removal .
  8. Remove the valve body mounting bolts.
  9. Remove the automatic transmission input speed sensor mounting bolt.

    10. Object Number: 1255960 Size: SH
  10. Remove the automatic transmission output speed sensor mounting bolt.

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

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.

    Important: After installing the control valve body 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 mounting and the bolts.

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

  2. Install the input speed sensor mounting bolt.

    3. Tighten
    Tighten the input speed sensor mounting bolts to 8 N·m (71 lb in).


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

    4. Tighten
    Tighten the output speed sensor mounting bolts 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 Removal .

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

    7. Object Number: 1255924 Size: SH
  7. Lower the vehicle.
  8. Connect the transaxle wiring harness and the park/neutral position (PNP) switch electrical connector.
  9. Install the air filter housing.
  10. Refill the transaxle fluid. Refer to Transmission Fluid Level Inspection .
  11. Connect the negative battery cable.

    12. Important: After installing the control valve body 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.