GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Sierra Denali 🢒 Engine 🢒 Engine Mechanical - Hybrid (HP2) 6.0L (LFA) 🢒 Engine Coolant Air Bleed Pipe and Hole Cover Cleaning and Inspection

    Object Number: 1552485 Size: SH

    Note: 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 and covers.

    2. Object Number: 1658230 Size: SH
  2. Clean the pipe and covers in solvent.

    3. Warning: Refer to Safety Glasses and Compressed Air Warning in the Preface section.

  3. Dry the pipe and covers with compressed air.
  4. Inspect the pipe and covers for restrictions within the pipe (1) or damaged sealing surfaces (2, 3).