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

  1. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  2. Remove the generator. Refer to Generator Replacement .
  3. Partially drain the cooling system. Refer to Cooling System Draining and Filling .

  4. Object Number: 220621  Size: SH
  5. Reposition the coolant air bleed hose clamp at the throttle body.
  6. Remove the coolant air bleed hose from the throttle body.

  7. Object Number: 790766  Size: SH
  8. Position the coolant air bleed hose clamp at the pipe.
  9. 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. Install the generator. Refer to Generator Replacement .
  7. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  8. Fill the cooling system. Refer to Cooling System Draining and Filling .