GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2006 🢒 Lucerne 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T80-E 🢒 Transmission Control Replacement

Removal Procedure

    Important: Incase of power loss the brake transmission shift interlock (BTSI) switch must be manually released in order to remove the console trim plate. If no power loss proceed to step 4.

  1. lift up the console trip plate. Refer to Console Shift Lever Bezel Replacement .

    2. Important: Wear gloves to protect hands from sharp edges


    Object Number: 1709099 Size: SH
  2. Remove the BTSI pin cover (1).

    3. Object Number: 1709101 Size: SH
  3. Depress BTSI switch pin (1) to release the shifter out of park.
  4. Remove the console trim plate. Refer to Console Shift Lever Bezel Replacement .

    5. Object Number: 891290 Size: SH
  5. Unsnap the shift cable terminal from the shifter pin.
  6. Remove the shift cable retaining clip (1) and the cable (2) from the shifter.

    7. Object Number: 627368 Size: SH
  7. Disengage the locking tab on the park lock cable and lift the cable out of the slot in the shifter.
  8. Unhook the park lock cable from the park lock cam on the shifter.
  9. Disconnect the electrical wire harness connector from the shifter assembly.

    10. Object Number: 291888 Size: SH
  10. Remove the shifter fasteners.
  11. Spread the console side panels apart and remove the shifter assembly.

Installation Procedure

    Object Number: 291888 Size: SH
  1. Spread the console side panels apart and install the shifter assembly.

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

  2. Install the shifter fasteners.

    3. Tighten
    Tighten the shifter fasteners to 9 N·m (79 lb in).

  3. Connect the shifter assembly electrical wire harness connector.

    4. Object Number: 627368 Size: SH
  4. Insert the park lock cable terminal onto the park lock cam on the shifter.
  5. Slide the park lock cable into the shifter and assure that the cable locking tab is fully engaged.

    6. Object Number: 891290 Size: SH
  6. Snap the shift cable terminal onto the shifter pin.
  7. Insert the shift cable (2) into the shifter base.
  8. Install the shift cable retaining clip (1).
  9. Adjust the shift cable as follows.
    10. 9.1. Place the shifter into the N (neutral) position.
    9.2. Loosen the shifter adjuster nut.
    9.3. Tighten the adjuster nut.

    Tighten
    Tighten the adjuster nut to 25 N·m (18 lb ft).

  10. Install the console trim plate. Refer to Console Shift Lever Bezel Replacement .