Engine Coolant Air Bleed Pipe Replacement 5.3L Engine

1. Drain the cooling system, if necessary. Refer to Cooling System Draining and Filling .
2. Remove the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
3. Reposition the coolant air bleed hose clamp at the coolant air bleed pipe.
4. Remove the coolant air bleed hose from the coolant air bleed pipe.



5. Remove the coolant air bleed pipe bolts (309).
6. Remove the coolant air bleed pipe (307) with seals (308).



7. Remove the coolant air bleed pipe cover bolts (312), if necessary.
8. Remove the coolant air bleed covers (313) with seals (308), if necessary.



9. Remove and discard the seals (308) from the coolant air bleed pipe and covers.

Important: Position the gasket O-ring seal (308) onto the nipple portion of the pipe.

1. Install the seals (308) onto the coolant air bleed pipe and covers.



2. Install the coolant air bleed pipe (307) with seals (308).

Notice: Refer to Fastener Notice in the Preface section.

3. Install the coolant air bleed pipe bolts (309).

Tighten
Tighten the bolts to 12 N·m (106 lb in).




4. Install the coolant air bleed covers (313) with seals (308), if necessary.
5. Remove the coolant air bleed pipe cover bolts (312), if necessary.

Tighten
Tighten the bolts to 12 N·m (106 lb in).




6. Install the coolant air bleed hose to the coolant air bleed pipe.
7. Position the coolant air bleed hose clamp at the coolant air bleed pipe.
8. Fill the cooling system, if necessary. Refer to Cooling System Draining and Filling .
9. Install the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .