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Abs Modulator/Motor Pack Assembly: Disassembly

  1. With ABS modulator/motor pack and master cylinder assembly removed from vehicle, remove as much fluid as possible from master cylinder. Turn ABS modulator/motor pack and master cylinder assembly upside-down. Remove 6 Torx head screws attaching gear cover to bottom of ABS modulator/motor pack assembly.
  2. Remove 4 Torx head screws attaching motor pack to ABS modulator. Remove motor pack. See Fig 1 . DO NOT drop motor pack. If motor pack is dropped, replacement is necessary.
  3. Remove 2 ABS modulator-to-master cylinder through bolts and "O" rings. Separate master cylinder from ABS modulator. Remove 2 transfer tubes and "O" rings from master cylinder or ABS modulator. See Fig 1 . If ABS modulator is being replaced, ensure gears are installed in same location on replacement ABS modulator. See ABS/TCS MODULATOR GEARS  .
Fig 1: Identifying ABS Modulator/Motor Pack & Master Cylinder Assembly Components
G92H22258Courtesy of GENERAL MOTORS CORP.
NOTE: DO NOT reuse transfer tubes or "O" rings. Install NEW components.