GM Service Manual Online
For 1990-2009 cars only

Object Number: 2178366  Size: MF

Callout

Component Name

Preliminary Procedure

  1. Remove the upper Intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement.
  2. Drain a gallon of coolant. Refer to Cooling System Draining and Filling.
  3. Disconnect the radiator surge pipe from the engine coolant air bleed pipe.

1

Bolt, Engine Coolant Air Bleed

Caution: Refer to Fastener Caution in the Preface section.

Tighten
12 N·m (106 lb in)

2

Engine Coolant Air Bleed Pipe

Procedure

Tip
Always discard the engine coolant bleed pipe O-ring.

Install a NEW O-ring to the engine coolant bleed pipe.