GM Service Manual Online
For 1990-2009 cars only

Engine Coolant Air Bleed Hose Replacement 4.8L, 5.3L, and 6.0L Engines

Removal Procedure


    Object Number: 220621  Size: SH
  1. Reposition the coolant air bleed hose clamp at the throttle body.
  2. Remove the coolant air bleed hose from the throttle body.

  3. Object Number: 790766  Size: SH
  4. Reposition the coolant air bleed hose clamp at the pipe.
  5. Remove the coolant air bleed hose (1) from the pipe (2).

Installation Procedure


    Object Number: 790766  Size: SH
  1. Install the coolant air bleed hose (1) to the pipe (2).
  2. Position the coolant air bleed hose clamp at the pipe.

  3. Object Number: 220621  Size: SH
  4. Install the coolant air bleed hose to the throttle body.
  5. Position the coolant air bleed hose clamp at the throttle body.
  6. Add engine coolant, if necessary.