Installation Procedure

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Fig 1: Coolant Air Bleed Pipe Seal

Courtesy of GENERAL MOTORS CORP.

NOTE:

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

Install the seals onto the coolant air bleed pipe and/or covers.

Fig 2: Engine Coolant Air Bleed Pipe

Courtesy of GENERAL MOTORS CORP.

Install the coolant air bleed pipe (307) and seals (308) onto the cylinder heads.

CAUTION:

Refer to Fastener Caution .

Install the coolant air bleed pipe bolts (309) and tighten to 12 N.m (106 lb in).

Fig 3: Coolant Air Bleed Cover Bolts

Courtesy of GENERAL MOTORS CORP.

Install the coolant air bleed covers (313) and seals (308), if required.
If required, install the coolant air bleed cover bolts (312) and tighten to 12 N.m (106 lb in).

Fig 4: Radiator Vent Inlet Hose

Courtesy of GENERAL MOTORS CORP.

Install the radiator vent inlet hose (2) to the coolant air bleed pipe fitting.
Position the radiator vent inlet hose clamp (1) at the coolant air bleed pipe fitting.
Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
Fill the cooling system. Refer to Cooling System Draining and Filling (Static Fill) .
If the rear coolant air bleed covers were replaced, install the intake manifold. Refer to Intake Manifold Replacement (RPOs LC9, LMG, LY5, L76) , Intake Manifold Replacement (RPOs LY2, LY6) , Intake Manifold Replacement (Except RPOs LY2, LY6, LC9, LMG, LY5) .