GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Acadia - AWD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 6T70/6T75 🢒 Transmission Control Lever Knob Replacement

Removal Procedure
  1. Apply the parking brake.
  2. Remove the floor console left extension panel. Refer to Front Floor Console Extension Panel Replacement - Left Side.

    3. Object Number: 1861397 Size: SH
  3. Disconnect the transmission tap up/tap down switch electrical connector (1).
  4. Rotate the key to the RUN position, however do NOT start the vehicle.
  5. Move the transmission shift control lever rearward.

    6. Object Number: 1861401 Size: SH
  6. Carefully insert a small flat bladed tool between the trim ring (2) and the shift knob. Apply careful downward pressure to the shift knob trim ring to separate the trim ring from the shift knob. The trim ring will drop down approximately 13.0 mm (0.5 in) exposing the shift knob retaining screw.
  7. Remove the shift control knob screw (1) from the shift control knob.

    8. Object Number: 1861405 Size: SH

    Important: Carefully guide the transmission tap up/tap down switch electrical harness and connector past the shift control indicator while removing the shift control knob.

  8. Remove the shift control knob (1) from the shift control lever.

Installation Procedure
  1. Apply lubricant GM P/N 88861426 (Canadian P/N 88861442) to the tip of the shift control lever.

    2. Object Number: 1861405 Size: SH

    Important: Carefully guide the transmission tap up/tap down switch electrical harness and connector past the shift control indicator while installing the shift control knob.

  2. Install the shift control knob (1) to the shift control lever.

    3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1861401 Size: SH
  3. Install the control knob screw (1).

    4. Tighten
    Tighten the screw to 4 N·m (35 lb in).

  4. Lift the shift control knob trim ring (2) up to the shift control knob until a click sound is heard indicating the trim ring is secured to the shift knob.
  5. Place the shift control lever in the PARK position.
  6. Rotate the key to the off position.

    7. Object Number: 1861397 Size: SH
  7. Connect the transmission tap up/tap down switch electrical connector (1).
  8. Check for proper operation of the shift control through all gear ranges.
  9. Install the floor console left extension panel. Refer to Front Floor Console Extension Panel Replacement - Left Side.
  10. Release the parking brake.