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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 198 (Manual Transmission - TREMEC 6-Speed (M3L Mg9)) >> Repair Instructions - On Vehicle >> Transmission Fluid Level Inspection (MG9)

Transmission Fluid Level Inspection (MG9)

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle (ATS-V) .
  2. Fig 1: Cooler Pipe Retaining Clip
    GM4236133Courtesy of GENERAL MOTORS COMPANY
  3. Disconnect the clip (1) retaining the cooler pipe to the transmission bracket.
  4. Reposition the cooler pipe to allow access to the fill plug.
  5. Remove the transmission fill plug from the transmission.
  6. Fig 2: Fill Plug
    GM4114258Courtesy of GENERAL MOTORS COMPANY
    IMPORTANT:

    Transmission fluid level setting must be followed exactly as written or the transmission may be overfilled or under filled.

  7. For fluid recommendations, Refer to Adhesives, Fluids, Lubricants, and Sealers (MG9) 

    Transmission fluid level MUST be 3.2 mm (1/8 inch) below (1) the fill plug. This can be done by one of the following methods:

    • Bend mechanics wire to 3.2 mm (1/8 inch) to check fluid level. Add or remove fluid as necessary.
    • Fill transmission until level with the bottom of the fill plug hole, then remove 240 ml (8 ounces) of fluid.
  8. CAUTION:

    Refer to Fastener Caution .

  9. Install the transmission fill plug to the transmission and tighten to 27 N.m (20 lb ft).
  10. Fig 3: Cooler Pipe Retaining Clip
    GM4236133Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Inspect the clip for proper retention on the cooler line to the bracket. Replace the clip as necessary.

  11. Reconnect the clip (1) retaining the cooler pipe to the transmission bracket.
  12. NOTE:

    Ensure the clutch pedal is NOT depressed.

  13. Run the engine in Neutral for two minutes to allow the fluid to recirculate.
  14. Remove the fill plug and verify the fluid level is 3.2 mm (1/8 inch) below the fill plug hole. Add or remove transmission fluid as necessary.
  15. Install the transmission fill plug to the transmission and tighten to 27 N.m (20 lb ft).
  16. Lower the vehicle.