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Home >> GMC >> 2017 >> Acadia SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 43 (Automatic Transmission - 8L45 (M5N M5T) Or 8L90 (M5U) - Repair Instructions - On Vehicle) >> Repair Instructions - On Vehicle >> Control Valve Body Replacement (M5N) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Transmission Fluid Filter
    GM3794350Courtesy of GENERAL MOTORS COMPANY
  1. Remove the transmission fluid filter (4). Automatic Transmission Fluid, Fluid Pan and/or Filter Replacement (Rear Wheel Drive) Automatic Transmission Fluid, Fluid Pan and/or Filter Replacement (All Wheel Drive) 
  2. Remove the auxiliary fluid accumulator. Auxiliary Fluid Accumulator Replacement 
  3. Fig 2: Transmission Fluid Baffle
    GM3816731Courtesy of GENERAL MOTORS COMPANY
  4. Remove the transmission fluid baffle (2). Transmission Fluid Baffle Replacement 
  5. Remove the transmission control wiring harness. Transmission Control Wiring Harness Replacement (M5U, M5T) Transmission Control Wiring Harness Replacement (M5N) 
  6. Fig 3: Manual Shaft Detent Lever Spring
    GM3816495Courtesy of GENERAL MOTORS COMPANY
  7. Remove the manual shaft detent lever spring retaining bolt (1) and the manual shaft detent lever spring (2).
  8. Fig 4: Manual Valve
    GM3816802Courtesy of GENERAL MOTORS COMPANY
  9. Disconnect the manual valve (1) from the manual shift shaft position switch assembly linkage (2).
  10. Fig 5: Retainer
    GM3817155Courtesy of GENERAL MOTORS COMPANY
  11. Remove the transmission fluid pump driven sprocket (1). Refer to transmission fluid baffle and driven sprocket in Control Valve Assembly and Transmission Wiring Harness Removal .

  12. Fig 6: Valve Body Torx Plus Bolts
    GM3816858Courtesy of GENERAL MOTORS COMPANY
  13. Using DT-48285   Valve Body Torx Plus Socket remove the valve body bolts (1,2) and the vale body assembly (3) from the transmission.