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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 60 (Automatic Transmission - 6L90 (MYD) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Control Solenoid Valve and Transmission Control Module Assembly Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
  1. GM1649733Courtesy of GENERAL MOTORS COMPANY

    Remove the transmission oil pan (1) and filter. Automatic Transmission Fluid, Fluid Pan and/or Filter Replacement 

  2. NOTE:

    The valve body must be removed from the transmission to replace the control solenoid valve and transmission control module assembly.

  3. Remove the upper and lower control valve body assembly. Control Valve Lower Body and Upper Body Replacement 
  4. Remove the electrical connector passage sleeve. Automatic Transmission Electrical Connector Passage Sleeve Replacement 
  5. GM1685807Courtesy of GENERAL MOTORS COMPANY

    Remove the valve body bolts (1).

  6. GM1685819Courtesy of GENERAL MOTORS COMPANY

    Remove the upper and lower control valve body assembly (1).

  7. GM1758085Courtesy of GENERAL MOTORS COMPANY

    Disconnect the speed sensor electrical connector (2) from the control solenoid valve assembly.

  8. Turn the control valve body assembly over.
  9. GM1758088Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Release the connector lock before disconnecting.

    Disconnect the manual shift shaft position switch connector (4) from the control solenoid valve assembly.

  10. Remove the bolt (3) and remove the manual shift shaft position switch assembly.
  11. GM1758093Courtesy of GENERAL MOTORS COMPANY

    Remove the 2 bolts (1) from the "heat sink" side of the control solenoid valve assembly.

  12. GM1758109Courtesy of GENERAL MOTORS COMPANY

    Remove the 5 bolts (2) and the 4 bolts (1) securing the control solenoid valve assembly to the control valve body assembly.

  13. GM1758093Courtesy of GENERAL MOTORS COMPANY

    Remove the control valve body assembly (4).

  14. 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.

  15. Carefully remove and discard the filter plate assembly (5).