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Home >> Chevrolet >> 2013 >> Sonic RS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Automatic Transmission - 6T30/6T40 - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Control Valve Body Cover Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  3. Remove the front bumper fascia opening lower cover. Refer to Front Bumper Fascia Opening Lower Cover Replacement .
  4. Remove the front wheel house liner inner front extension. Refer to Front Wheelhouse Liner Inner Front Extension Replacement (Left SIde) , Front Wheelhouse Liner Inner Front Extension Replacement (Right Side, LUV) , Front Wheelhouse Liner Inner Front Extension Replacement (Right SIde, LWE, LUW) .
  5. Drain the transmission fluid.
  6. Fig 1: Oil Cooler Inlet, Outlet & Retainers
    GM2536225Courtesy of GENERAL MOTORS COMPANY
  7. Remove oil cooler inlet (1) and outlet (2) hoses from the retainer (3) on the control valve body cover.
  8. Fig 2: Identifying Control Valve Body Transmission Control Module (TCM) Electrical Connector
    GM1999448Courtesy of GENERAL MOTORS COMPANY
  9. Disconnect the control valve body transmission control module electrical connector (1), then unclip the wiring harness from the cover.
  10. Fig 3: View Of Control Valve Body
    GM1999445Courtesy of GENERAL MOTORS COMPANY
  11. Remove the control valve body cover bolts (1).
  12. Remove the control valve body cover (2).
  13. Remove the control valve body cover gasket (3).
  14. CAUTION:

    Support the control solenoid valve assembly around the connector when removing the seal. Excessive pulling force can damage the internal electrical connections.

  15. Remove the control valve body cover wiring connector hole seal (4).
  16. Remove all traces of the old gasket material. Clean the transmission case and control valve body cover gasket surfaces.