Removal Procedure

Important:  Removal of the intake manifold is NOT required to service the coolant air bleed pipe, but is required to service the coolant air bleed pipe covers and/or gaskets.

1. Remove the intake manifold, if required. Refer to INTAKE MANIFOLD REPLACEMENT in Engine Mechanical - 5.7 L.
2. Remove the coolant air bleed hose from the throttle body, if required.
3. Remove the coolant air bleed pipe studs (1).
4. Remove the coolant air bleed pipe (2) with gaskets (3).
   Fig 1: Removing Coolant Air Bleed Pipe With Gaskets

   Courtesy of GENERAL MOTORS CORP.
5. Remove the coolant air bleed pipe cover bolts (1), if required.
6. Remove the coolant air bleed pipe covers (2) with gaskets (3), if required.
   Fig 2: Coolant Air Bleed Pipe Covers

   Courtesy of GENERAL MOTORS CORP.
7. Remove the gaskets from the coolant air bleed pipe and covers. Discard the gaskets.
   Fig 3: Removing Gaskets From Coolant Air Bleed Pipe & Covers

   Courtesy of GENERAL MOTORS CORP.
8. Remove the coolant air bleed hose (2) from the pipe (1).
9. Clean and inspect the coolant air bleed pipe. Refer to COOLANT AIR BLEED PIPE CLEANING AND INSPECTION in the Engine Unit Repair Manual.
   Fig 4: Removing Coolant Air Bleed Hose From Pipe

   Courtesy of GENERAL MOTORS CORP.