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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Transmission - 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. Remove the battery tray. Refer to Battery Tray Replacement .
  2. Fig 1: Identifying Cooler Inlet & Outlet Hoses
    GM1998666Courtesy of GENERAL MOTORS COMPANY
  3. Remove the oil cooler inlet (1) and outlet (2) hoses from the retainer (2) on the control valve body cover.
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  5. Remove the front transmission mount. Refer to Transmission Front Mount Replacement .
  6. Drain the transmission. Refer to Transmission Fluid Drain and Fill .
  7. Fig 2: Identifying Control Valve Body Transmission Control Module (TCM) Electrical Connector
    GM1999448Courtesy of GENERAL MOTORS COMPANY
  8. Disconnect the control valve body transmission control module (TCM) electrical connector (1), then the wiring harness from the cover.
  9. Fig 3: View Of Control Valve Body
    GM1999445Courtesy of GENERAL MOTORS COMPANY
  10. Remove the control valve body cover bolts (1).
  11. Support the transmission with a transmission jack.
  12. Using the transmission jack raise the transmission to gain clearance for removal of the control valve body cover.
  13. Remove the control valve body cover.
  14. Remove the control valve body cover gasket.
  15. CAUTION:

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

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