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Chevrolet Sonic Repair Manual: Control Solenoid Valve and Transmission Control Module Assembly Replacement

Chevrolet Sonic Repair Manual / Powertrain / Internal Combustion Powertrain Control / Transmission Control / Control Solenoid Valve and Transmission Control Module Assembly Replacement

Removal Procedure
  1. Remove the transmission control valve body cover. Refer to Control Valve Body Cover Replacement.


  2. Disconnect the output speed sensor electrical connector (2).
  3. Disconnect the shift position switch electrical connector (3).
  4. Disconnect the input speed sensor electrical connector (1).

  5. Remove the 3 control solenoid valve assembly bolts (1) M5 x 40.5.
  6. Remove the 12 control solenoid valve assembly bolts (2) M6 x 97.
  7. Remove the control solenoid valve assembly with transmission control module (3).

    8. Caution:

    Use care when removing or installing the filter plate assembly. A broken or missing retaining tab may not adequately secure the filter plate to the control solenoid valve assembly, resulting in possible damage or contamination.

  8. Remove the control solenoid valve assembly filter plate  (4). Discard the filter plate. It is not reusable.
  9. Inspect the pressure switch seals for damage or contamination. Replace the control solenoid valve assembly as necessary.
  10. Inspect the channel plate bolt pass through holes for damage or burnelling. Any damage could cause leaking. Replace as necessary.
Installation Procedure


    Caution:

    Use care when removing or installing the filter plate assembly. A broken or missing retaining tab may not adequately secure the filter plate to the control solenoid valve assembly, resulting in possible damage or contamination.

  1. Install a NEW control solenoid valve assembly filter plate (4) to prevent fluid leaks past the fluid seals.
  2. Install the control solenoid valve assembly with transmission control module (3).
  3. Hand start the control valve body bolts (1, 2).

    4. Caution:

    Refer to Fastener Caution.

  4. Secure the 12 control solenoid valve assembly bolts (2) M6 x 97 and tighten in sequence to 12 Y (106 lb in)

    .

  5. Secure the 3 control valve body bolts (1) M5 x 40.5 and tighten in sequence to 7 Y (62 lb in)

    .

  6. Connect the input speed sensor electrical connector (1).
  7. Connect the output speed sensor electrical connector (2).
  8. Install the transmission control valve body cover. Refer to Control Valve Body Cover Replacement.
  9. After repairs, refer to Control Module References for programming and set up procedures.
  10. Perform the transmission adaptive values learn. Refer to Transmission Adaptive Values Learn.
Control Solenoid Valve and Transmission Control Module Assembly Programming and Setup (6T30/6T40/6T45/6T50)
The following service procedures require either a programming or a setup event be performed for a complete repair. The transmission control module (TCM) is part of the control solenoid valve ...

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