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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Transmission - 6T50 (M2D) - 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 negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (Without KL9)Battery Negative Cable Disconnection and Connection (With KL9) .
  2. Drain the transmission. Transmission Fluid Drain and Fill
  3. GM4364349

    Remove the oil cooler hose from the retainer (1) on the control valve body cover.

  4. Disconnect the control valve body transmission control module (TCM) electrical connector (2), then the wiring harness from the cover.
  5. GM1999445

    Remove the control valve body cover bolts (1).

  6. Remove the control valve body cover (2).
  7. Remove the control valve body cover gasket (3).
    8. CAUTION:

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

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