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Home >> GMC >> 2021 >> Acadia SL >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3H), 9T60 (M3G) Or 9T65 (M3W) - Repair Instructions - On Vehicle >> Repair Instructions - On Vehicle >> Control Valve Body Cover Replacement (LSY) >> Removal Procedure

Removal Procedure

  1. Disconnect the battery negative cable. Battery Negative Cable Disconnection and Connection
  2. Remove the electrical harness bracket nuts (1).
    GM4707670Courtesy of GENERAL MOTORS COMPANY
  3. Remove the electrical harness bracket (2) from the control valve body cover and position out of the way.
  4. Drain the transmission fluid. Transmission Fluid Drain and Fill 
  5. Disconnect the control valve body transmission control module electrical connector (1), then unclip the wiring harness from the cover.
    GM4707537Courtesy of GENERAL MOTORS COMPANY
  6. Transmission Fluid Cooler Inlet Pipe (1) @ Transmission - Disconnect - Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (LSY)
    GM4755791Courtesy of GENERAL MOTORS COMPANY
  7. Transmission Fluid Cooler Outlet Pipe (2) @ Transmission - Disconnect - Transmission Fluid Cooler Inlet and Outlet Pipe Replacement (LSY)
    GM4665630Courtesy of GENERAL MOTORS COMPANY
  8. Remove the body ground cable and wiring harness assembly mounting bolt at front of transmission and position ground cable and harness out of the way.
  9. Remove the control valve body cover bolts (1, 2).
    Fig 1: Identifying Control Valve Body Cover Bolts With Tightening Sequence
    GM4489055Courtesy of GENERAL MOTORS COMPANY
  10. Remove the control valve body cover (1).
    GM4489058Courtesy of GENERAL MOTORS COMPANY
  11. Clean the transmission case and control valve body cover gasket surfaces. Inspect and replace the gasket as necessary.