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Removal Procedure

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  1. Remove the vacuum hose from the brake assist pump.
  2. Disconnect the electrical connector.
  3. Remove the brake assist pump nuts.
  4. Remove the brake assist pump from the booster by pulling the inlet tube out of the grommet.
  5. Fig 1: Removing Brake Assist Pump & Nuts
    GM888257Courtesy of GENERAL MOTORS CORP.