Removal Procedure

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

Drain the cooling system. Refer to Cooling System Draining and Filling (GE-47716) Cooling System Draining and Filling (Static)
Remove Air Cleaner Outlet Duct. Refer to Air Cleaner Outlet Duct Replacement

Fig 1: Engine Coolant Air Bleed Hose And Clamp

Courtesy of GENERAL MOTORS COMPANY

NOTE:

To aid in removal of the engine air bleed pipes, separate the air bleed hose and remove the pipes individually.

NOTE:

Using penetrating oil at the locations indicated by the arrows will aid in removal of the pipes from the cylinder heads.

Disengage Engine Coolant Air Bleed Hose Clamp (1). Refer to Hose Clamp Replacement Guidelines - Spring Type
Disconnect Engine Coolant Air Bleed Hose (2)

Fig 2: Radiator Surge Tank Inlet Hose, Clamp And Engine Coolant Air Bleed Pipe Bolts

Courtesy of GENERAL MOTORS COMPANY

Disengage Radiator Surge Tank Inlet Hose Clamp (1). Refer to Hose Clamp Replacement Guidelines - Spring Type
Disconnect Radiator Surge Tank Inlet Hose (2)
Remove Engine Coolant Air Bleed Pipe Bolts (3) (Qty: 2)
Remove Temperature Sensor Wiring Harness @ Engine Coolant Air Bleed Pipe

Fig 3: Engine Coolant Air Bleed Pipes And O-Ring Seals

Courtesy of GENERAL MOTORS COMPANY

Remove Engine Coolant Air Bleed Pipes (1)
Remove and DISCARD Engine Coolant Air Bleed Pipe O-Ring (2) (Qty: 2)