GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2005 🢒 Envoy - 4WD 🢒 Engine 🢒 Engine Mechanical - 5.3L 🢒 Engine Coolant Air Bleed Pipe Cleaning and Inspection

    Object Number: 1401993 Size: SH

    Important: Do not use the engine coolant air bleed pipe and cover seals again. Upon installation of the pipe and covers, install NEW seals.

  1. Remove the seals (308) from the pipe (307) and covers.
  2. Clean the pipe and covers in solvent.

    3. Caution: Refer to Safety Glasses Caution in the Preface section.

  3. Dry the pipe and covers with compressed air.
  4. Inspect the pipe and covers for damaged sealing surfaces or restrictions within the pipe.